merge from develop

cmake/version.inc

@@ -4,7 +4,7 @@ PROJECT(TDengine)
 IF (DEFINED VERNUMBER)
   SET(TD_VER_NUMBER ${VERNUMBER})
 ELSE ()
-  SET(TD_VER_NUMBER "2.0.12.0")
+  SET(TD_VER_NUMBER "2.0.13.0")
 ENDIF ()
 
 IF (DEFINED VERCOMPATIBLE)

documentation20/webdocs/markdowndocs/Model-ch.md

@@ -4,6 +4,8 @@
 
 TDengine采用关系型数据模型，需要建库、建表。因此对于一个具体的应用场景，需要考虑库的设计，超级表和普通表的设计。本节不讨论细致的语法规则，只介绍概念。
 
+关于数据建模请参考<a href="https://www.taosdata.com/blog/2020/11/11/1945.html">视频教程</a>。
+
 ## 创建库
 
 不同类型的数据采集点往往具有不同的数据特征，包括数据采集频率的高低，数据保留时间的长短，副本的数目，数据块的大小，是否允许更新数据等等。为让各种场景下TDengine都能最大效率的工作，TDengine建议将不同数据特征的表创建在不同的库里，因为每个库可以配置不同的存储策略。创建一个库时，除SQL标准的选项外，应用还可以指定保留时长、副本数、内存块个数、时间精度、文件块里最大最小记录条数、是否压缩、一个数据文件覆盖的天数等多种参数。比如：
@@ -60,4 +62,3 @@ TDengine支持多列模型，只要物理量是一个数据采集点同时采集
 
 TDengine建议尽可能采用多列模型，因为插入效率以及存储效率更高。但对于有些场景，一个采集点的采集量的种类经常变化，这个时候，如果采用多列模型，就需要频繁修改超级表的结构定义，让应用变的复杂，这个时候，采用单列模型会显得简单。
 
-关于数据建模请参考<a href="https://www.taosdata.com/blog/2020/11/11/1945.html">视频教程</a>。

documentation20/webdocs/markdowndocs/cluster-ch.md

@@ -6,6 +6,8 @@
 
 TDengine的集群管理极其简单，除添加和删除节点需要人工干预之外，其他全部是自动完成，最大程度的降低了运维的工作量。本章对集群管理的操作做详细的描述。
 
+关于集群搭建请参考<a href="https://www.taosdata.com/blog/2020/11/11/1961.html">视频教程</a>。
+
 ## 准备工作
 
 **第零步**：规划集群所有物理节点的FQDN，将规划好的FQDN分别添加到每个物理节点的/etc/hostname；修改每个物理节点的/etc/hosts，将所有集群物理节点的IP与FQDN的对应添加好。【如部署了DNS，请联系网络管理员在DNS上做好相关配置】
@@ -227,4 +229,3 @@ SHOW MNODES;
 
 TDengine提供一个执行程序tarbitrator, 找任何一台Linux服务器运行它即可。请点击[安装包下载](https://www.taosdata.com/cn/all-downloads/)，在TDengine Arbitrator Linux一节中，选择适合的版本下载并安装。该程序对系统资源几乎没有要求，只需要保证有网络连接即可。该应用的命令行参数`-p`可以指定其对外服务的端口号，缺省是6042。配置每个taosd实例时，可以在配置文件taos.cfg里将参数arbitrator设置为arbitrator的End Point。如果该参数配置了，当副本数为偶数数，系统将自动连接配置的arbitrator。如果副本数为奇数，即使配置了arbitrator, 系统也不会去建立连接。
 
-关于集群搭建请参考<a href="https://www.taosdata.com/blog/2020/11/11/1961.html">视频教程</a>。

snap/snapcraft.yaml

@@ -1,6 +1,6 @@
 name: tdengine
 base: core18
-version: '2.0.12.0'
+version: '2.0.13.0'
 icon: snap/gui/t-dengine.svg
 summary: an open-source big data platform designed and optimized for IoT. 
 description: |
@@ -72,7 +72,7 @@ parts:
       - usr/bin/taosd
       - usr/bin/taos
       - usr/bin/taosdemo
-      - usr/lib/libtaos.so.2.0.12.0
+      - usr/lib/libtaos.so.2.0.13.0
       - usr/lib/libtaos.so.1
       - usr/lib/libtaos.so
 

src/client/src/tscSQLParser.c

@@ -75,11 +75,11 @@ static int32_t insertResultField(SQueryInfo* pQueryInfo, int32_t outputIndex, SC
 static int32_t convertFunctionId(int32_t optr, int16_t* functionId);
 static uint8_t convertOptr(SStrToken *pToken);
 
-static int32_t parseSelectClause(SSqlCmd* pCmd, int32_t clauseIndex, tSQLExprList* pSelection, bool isSTable, bool joinQuery);
+static int32_t parseSelectClause(SSqlCmd* pCmd, int32_t clauseIndex, tSQLExprList* pSelection, bool isSTable, bool joinQuery, bool intervalQuery);
 
 static bool validateIpAddress(const char* ip, size_t size);
 static bool hasUnsupportFunctionsForSTableQuery(SSqlCmd* pCmd, SQueryInfo* pQueryInfo);
-static bool functionCompatibleCheck(SQueryInfo* pQueryInfo, bool joinQuery);
+static bool functionCompatibleCheck(SQueryInfo* pQueryInfo, bool joinQuery, bool intervalQuery);
 
 static int32_t parseGroupbyClause(SQueryInfo* pQueryInfo, SArray* pList, SSqlCmd* pCmd);
 
@@ -1475,7 +1475,7 @@ static void addPrimaryTsColIntoResult(SQueryInfo* pQueryInfo) {
   pQueryInfo->type |= TSDB_QUERY_TYPE_PROJECTION_QUERY;
 }
 
-int32_t parseSelectClause(SSqlCmd* pCmd, int32_t clauseIndex, tSQLExprList* pSelection, bool isSTable, bool joinQuery) {
+int32_t parseSelectClause(SSqlCmd* pCmd, int32_t clauseIndex, tSQLExprList* pSelection, bool isSTable, bool joinQuery, bool intervalQuery) {
   assert(pSelection != NULL && pCmd != NULL);
 
   const char* msg2 = "functions can not be mixed up";
@@ -1531,7 +1531,7 @@ int32_t parseSelectClause(SSqlCmd* pCmd, int32_t clauseIndex, tSQLExprList* pSel
     addPrimaryTsColIntoResult(pQueryInfo);
   }
 
-  if (!functionCompatibleCheck(pQueryInfo, joinQuery)) {
+  if (!functionCompatibleCheck(pQueryInfo, joinQuery, intervalQuery)) {
     return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2);
   }
 
@@ -2810,7 +2810,7 @@ bool hasUnsupportFunctionsForSTableQuery(SSqlCmd* pCmd, SQueryInfo* pQueryInfo)
   return false;
 }
 
-static bool functionCompatibleCheck(SQueryInfo* pQueryInfo, bool joinQuery) {
+static bool functionCompatibleCheck(SQueryInfo* pQueryInfo, bool joinQuery, bool intervalQuery) {
   int32_t startIdx = 0;
 
   size_t numOfExpr = tscSqlExprNumOfExprs(pQueryInfo);
@@ -2826,6 +2826,10 @@ static bool functionCompatibleCheck(SQueryInfo* pQueryInfo, bool joinQuery) {
 
   int32_t factor = functionCompatList[tscSqlExprGet(pQueryInfo, startIdx)->functionId];
 
+  if (tscSqlExprGet(pQueryInfo, 0)->functionId == TSDB_FUNC_LAST_ROW && (joinQuery || intervalQuery)) {
+	return false;
+  }
+
   // diff function cannot be executed with other function
   // arithmetic function can be executed with other arithmetic functions
   size_t size = tscSqlExprNumOfExprs(pQueryInfo);
@@ -2850,7 +2854,7 @@ static bool functionCompatibleCheck(SQueryInfo* pQueryInfo, bool joinQuery) {
       }
     }
 
-    if (functionId == TSDB_FUNC_LAST_ROW && joinQuery) {
+    if (functionId == TSDB_FUNC_LAST_ROW && (joinQuery || intervalQuery)) {
       return false;
     }
   }
@@ -6320,7 +6324,7 @@ int32_t doCheckForStream(SSqlObj* pSql, SSqlInfo* pInfo) {
   }
 
   bool isSTable = UTIL_TABLE_IS_SUPER_TABLE(pTableMetaInfo);
-  if (parseSelectClause(&pSql->cmd, 0, pQuerySql->pSelection, isSTable, false) != TSDB_CODE_SUCCESS) {
+  if (parseSelectClause(&pSql->cmd, 0, pQuerySql->pSelection, isSTable, false, false) != TSDB_CODE_SUCCESS) {
     return TSDB_CODE_TSC_INVALID_SQL;
   }
 
@@ -6565,7 +6569,9 @@ int32_t doCheckForQuery(SSqlObj* pSql, SQuerySQL* pQuerySql, int32_t index) {
 
   int32_t joinQuery = (pQuerySql->from != NULL && taosArrayGetSize(pQuerySql->from) > 2);
 
-  if (parseSelectClause(pCmd, index, pQuerySql->pSelection, isSTable, joinQuery) != TSDB_CODE_SUCCESS) {
+  int32_t intervalQuery = !(pQuerySql->interval.type == 0 || pQuerySql->interval.n == 0);
+
+  if (parseSelectClause(pCmd, index, pQuerySql->pSelection, isSTable, joinQuery, intervalQuery) != TSDB_CODE_SUCCESS) {
     return TSDB_CODE_TSC_INVALID_SQL;
   }
 

src/client/src/tscUtil.c

@@ -458,12 +458,13 @@ void tscFreeRegisteredSqlObj(void *pSql) {
 
   assert(RID_VALID(p->self));
 
+  int32_t num   = atomic_sub_fetch_32(&pTscObj->numOfObj, 1);
+  int32_t total = atomic_sub_fetch_32(&tscNumOfObj, 1);
+
+  tscDebug("%p free SqlObj, total in tscObj:%d, total:%d", pSql, num, total);
   tscFreeSqlObj(p);
   taosReleaseRef(tscRefId, pTscObj->rid);
 
-  int32_t num   = atomic_sub_fetch_32(&pTscObj->numOfObj, 1);
-  int32_t total = atomic_sub_fetch_32(&tscNumOfObj, 1);
-  tscDebug("%p free SqlObj, total in tscObj:%d, total:%d", pSql, num, total);
 }
 
 void tscFreeSqlObj(SSqlObj* pSql) {

src/connector/jdbc/pom.xml

@@ -56,6 +56,12 @@
             <scope>test</scope>
         </dependency>
 
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>5.1.47</version>
+        </dependency>
+
         <!-- for restful -->
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
@@ -73,7 +79,14 @@
             <version>1.2.58</version>
         </dependency>
 
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>5.1.49</version>
+        </dependency>
+
     </dependencies>
+
     <build>
         <plugins>
             <plugin>

src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractDatabaseMetaData.java

@@ -0,0 +1,808 @@
+/***************************************************************************
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *****************************************************************************/
+package com.taosdata.jdbc;
+
+import java.sql.*;
+import java.util.ArrayList;
+import java.util.List;
+
+public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
+
+    private final static String PRODUCT_NAME = "TDengine";
+    private final static String PRODUCT_VESION = "2.0.x.x";
+    private final static String DRIVER_NAME = "taos-jdbcdriver";
+    private final static String DRIVER_VERSION = "2.0.x";
+    private final static int DRIVER_MAJAR_VERSION = 2;
+    private final static int DRIVER_MINOR_VERSION = 0;
+
+    public boolean allProceduresAreCallable() throws SQLException {
+        return false;
+    }
+
+    public boolean allTablesAreSelectable() throws SQLException {
+        return false;
+    }
+
+    public abstract String getURL() throws SQLException;
+
+    public abstract String getUserName() throws SQLException;
+
+    public boolean isReadOnly() throws SQLException {
+        return false;
+    }
+
+    public boolean nullsAreSortedHigh() throws SQLException {
+        return false;
+    }
+
+    public boolean nullsAreSortedLow() throws SQLException {
+        return !nullsAreSortedHigh();
+    }
+
+    public boolean nullsAreSortedAtStart() throws SQLException {
+        return true;
+    }
+
+    public boolean nullsAreSortedAtEnd() throws SQLException {
+        return !nullsAreSortedAtStart();
+    }
+
+    public String getDatabaseProductName() throws SQLException {
+        return PRODUCT_NAME;
+    }
+
+    public String getDatabaseProductVersion() throws SQLException {
+        return PRODUCT_VESION;
+    }
+
+    public String getDriverName() throws SQLException {
+        return DRIVER_NAME;
+    }
+
+    public String getDriverVersion() throws SQLException {
+        return DRIVER_VERSION;
+    }
+
+    public int getDriverMajorVersion() {
+        return DRIVER_MAJAR_VERSION;
+    }
+
+    public int getDriverMinorVersion() {
+        return DRIVER_MINOR_VERSION;
+    }
+
+    public boolean usesLocalFiles() throws SQLException {
+        return false;
+    }
+
+    public boolean usesLocalFilePerTable() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsMixedCaseIdentifiers() throws SQLException {
+        return false;
+    }
+
+    public boolean storesUpperCaseIdentifiers() throws SQLException {
+        return false;
+    }
+
+    public boolean storesLowerCaseIdentifiers() throws SQLException {
+        return false;
+    }
+
+    public boolean storesMixedCaseIdentifiers() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException {
+        return false;
+    }
+
+    public boolean storesUpperCaseQuotedIdentifiers() throws SQLException {
+        return false;
+    }
+
+    public boolean storesLowerCaseQuotedIdentifiers() throws SQLException {
+        return false;
+    }
+
+    public boolean storesMixedCaseQuotedIdentifiers() throws SQLException {
+        return false;
+    }
+
+    public String getIdentifierQuoteString() throws SQLException {
+        return " ";
+    }
+
+    public String getSQLKeywords() throws SQLException {
+        return null;
+    }
+
+    public String getNumericFunctions() throws SQLException {
+        return null;
+    }
+
+    public String getStringFunctions() throws SQLException {
+        return null;
+    }
+
+    public String getSystemFunctions() throws SQLException {
+        return null;
+    }
+
+    public String getTimeDateFunctions() throws SQLException {
+        return null;
+    }
+
+    public String getSearchStringEscape() throws SQLException {
+        return null;
+    }
+
+    public String getExtraNameCharacters() throws SQLException {
+        return null;
+    }
+
+    public boolean supportsAlterTableWithAddColumn() throws SQLException {
+        return true;
+    }
+
+    public boolean supportsAlterTableWithDropColumn() throws SQLException {
+        return true;
+    }
+
+    public boolean supportsColumnAliasing() throws SQLException {
+        return true;
+    }
+
+    public boolean nullPlusNonNullIsNull() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsConvert() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsConvert(int fromType, int toType) throws SQLException {
+        return false;
+    }
+
+    public boolean supportsTableCorrelationNames() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsDifferentTableCorrelationNames() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsExpressionsInOrderBy() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsOrderByUnrelated() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsGroupBy() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsGroupByUnrelated() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsGroupByBeyondSelect() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsLikeEscapeClause() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsMultipleResultSets() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsMultipleTransactions() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsNonNullableColumns() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsMinimumSQLGrammar() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsCoreSQLGrammar() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsExtendedSQLGrammar() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsANSI92EntryLevelSQL() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsANSI92IntermediateSQL() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsANSI92FullSQL() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsIntegrityEnhancementFacility() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsOuterJoins() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsFullOuterJoins() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsLimitedOuterJoins() throws SQLException {
+        return false;
+    }
+
+    public String getSchemaTerm() throws SQLException {
+        return null;
+    }
+
+    public String getProcedureTerm() throws SQLException {
+        return null;
+    }
+
+    public String getCatalogTerm() throws SQLException {
+        return "database";
+    }
+
+    public boolean isCatalogAtStart() throws SQLException {
+        return true;
+    }
+
+    public String getCatalogSeparator() throws SQLException {
+        return ".";
+    }
+
+    public boolean supportsSchemasInDataManipulation() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsSchemasInProcedureCalls() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsSchemasInTableDefinitions() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsSchemasInIndexDefinitions() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsCatalogsInDataManipulation() throws SQLException {
+        return true;
+    }
+
+    public boolean supportsCatalogsInProcedureCalls() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsCatalogsInTableDefinitions() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsCatalogsInIndexDefinitions() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsPositionedDelete() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsPositionedUpdate() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsSelectForUpdate() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsStoredProcedures() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsSubqueriesInComparisons() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsSubqueriesInExists() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsSubqueriesInIns() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsSubqueriesInQuantifieds() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsCorrelatedSubqueries() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsUnion() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsUnionAll() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsOpenCursorsAcrossCommit() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsOpenCursorsAcrossRollback() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsOpenStatementsAcrossCommit() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsOpenStatementsAcrossRollback() throws SQLException {
+        return false;
+    }
+
+    public int getMaxBinaryLiteralLength() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxCharLiteralLength() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxColumnNameLength() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxColumnsInGroupBy() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxColumnsInIndex() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxColumnsInOrderBy() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxColumnsInSelect() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxColumnsInTable() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxConnections() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxCursorNameLength() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxIndexLength() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxSchemaNameLength() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxProcedureNameLength() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxCatalogNameLength() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxRowSize() throws SQLException {
+        return 0;
+    }
+
+    public boolean doesMaxRowSizeIncludeBlobs() throws SQLException {
+        return false;
+    }
+
+    public int getMaxStatementLength() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxStatements() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxTableNameLength() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxTablesInSelect() throws SQLException {
+        return 0;
+    }
+
+    public int getMaxUserNameLength() throws SQLException {
+        return 0;
+    }
+
+    public int getDefaultTransactionIsolation() throws SQLException {
+        return 0;
+    }
+
+    public boolean supportsTransactions() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsTransactionIsolationLevel(int level) throws SQLException {
+        return false;
+    }
+
+    public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsDataManipulationTransactionsOnly() throws SQLException {
+        return false;
+    }
+
+    public boolean dataDefinitionCausesTransactionCommit() throws SQLException {
+        return false;
+    }
+
+    public boolean dataDefinitionIgnoredInTransactions() throws SQLException {
+        return false;
+    }
+
+    public ResultSet getProcedures(String catalog, String schemaPattern, String procedureNamePattern)
+            throws SQLException {
+        throw new SQLException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
+    }
+
+    public ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern,
+                                         String columnNamePattern) throws SQLException {
+        throw new SQLException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
+    }
+
+    public abstract ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types)
+            throws SQLException;
+
+    public ResultSet getSchemas() throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public abstract ResultSet getCatalogs() throws SQLException;
+
+    public ResultSet getTableTypes() throws SQLException {
+        DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
+
+        // set up ColumnMetaDataList
+        List<ColumnMetaData> columnMetaDataList = new ArrayList<ColumnMetaData>(1);
+        ColumnMetaData colMetaData = new ColumnMetaData();
+        colMetaData.setColIndex(0);
+        colMetaData.setColName("TABLE_TYPE");
+        colMetaData.setColSize(10);
+        colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_BINARY);
+        columnMetaDataList.add(colMetaData);
+
+        // set up rowDataList
+        List<TSDBResultSetRowData> rowDataList = new ArrayList<TSDBResultSetRowData>(2);
+        TSDBResultSetRowData rowData = new TSDBResultSetRowData();
+        rowData.setString(0, "TABLE");
+        rowDataList.add(rowData);
+        rowData = new TSDBResultSetRowData();
+        rowData.setString(0, "STABLE");
+        rowDataList.add(rowData);
+
+        resultSet.setColumnMetaDataList(columnMetaDataList);
+        resultSet.setRowDataList(rowDataList);
+        return resultSet;
+    }
+
+    public abstract ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException;
+
+    protected int getNullable(int index, String typeName) {
+        if (index == 0 && "TIMESTAMP".equals(typeName))
+            return DatabaseMetaData.columnNoNulls;
+        return DatabaseMetaData.columnNullable;
+    }
+
+    protected int getColumnSize(String typeName, int length) {
+        switch (typeName) {
+            case "TIMESTAMP":
+                return 23;
+
+            default:
+                return 0;
+        }
+    }
+
+    protected int getDecimalDigits(String typeName) {
+        switch (typeName) {
+            case "FLOAT":
+                return 5;
+            case "DOUBLE":
+                return 9;
+            default:
+                return 0;
+        }
+    }
+
+    protected int getDataType(String typeName) {
+        switch (typeName) {
+            case "TIMESTAMP":
+                return Types.TIMESTAMP;
+            case "INT":
+                return Types.INTEGER;
+            case "BIGINT":
+                return Types.BIGINT;
+            case "FLOAT":
+                return Types.FLOAT;
+            case "DOUBLE":
+                return Types.DOUBLE;
+            case "BINARY":
+                return Types.BINARY;
+            case "SMALLINT":
+                return Types.SMALLINT;
+            case "TINYINT":
+                return Types.TINYINT;
+            case "BOOL":
+                return Types.BOOLEAN;
+            case "NCHAR":
+                return Types.NCHAR;
+            default:
+                return Types.NULL;
+        }
+    }
+
+    public ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern)
+            throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern)
+            throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable)
+            throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getVersionColumns(String catalog, String schema, String table) throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getExportedKeys(String catalog, String schema, String table) throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getCrossReference(String parentCatalog, String parentSchema, String parentTable,
+                                       String foreignCatalog, String foreignSchema, String foreignTable) throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getTypeInfo() throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate)
+            throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public boolean supportsResultSetType(int type) throws SQLException {
+        return false;
+    }
+
+    public boolean supportsResultSetConcurrency(int type, int concurrency) throws SQLException {
+        return false;
+    }
+
+    public boolean ownUpdatesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    public boolean ownDeletesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    public boolean ownInsertsAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    public boolean othersUpdatesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    public boolean othersDeletesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    public boolean othersInsertsAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    public boolean updatesAreDetected(int type) throws SQLException {
+        return false;
+    }
+
+    public boolean deletesAreDetected(int type) throws SQLException {
+        return false;
+    }
+
+    public boolean insertsAreDetected(int type) throws SQLException {
+        return false;
+    }
+
+    public boolean supportsBatchUpdates() throws SQLException {
+        return false;
+    }
+
+    public ResultSet getUDTs(String catalog, String schemaPattern, String typeNamePattern, int[] types)
+            throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public Connection getConnection() throws SQLException {
+        return null;
+    }
+
+    public boolean supportsSavepoints() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsNamedParameters() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsMultipleOpenResults() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsGetGeneratedKeys() throws SQLException {
+        return false;
+    }
+
+    public ResultSet getSuperTypes(String catalog, String schemaPattern, String typeNamePattern) throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getAttributes(String catalog, String schemaPattern, String typeNamePattern,
+                                   String attributeNamePattern) throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public boolean supportsResultSetHoldability(int holdability) throws SQLException {
+        return false;
+    }
+
+    public int getResultSetHoldability() throws SQLException {
+        return 0;
+    }
+
+    public int getDatabaseMajorVersion() throws SQLException {
+        return 0;
+    }
+
+    public int getDatabaseMinorVersion() throws SQLException {
+        return 0;
+    }
+
+    public int getJDBCMajorVersion() throws SQLException {
+        return 0;
+    }
+
+    public int getJDBCMinorVersion() throws SQLException {
+        return 0;
+    }
+
+    public int getSQLStateType() throws SQLException {
+        return 0;
+    }
+
+    public boolean locatorsUpdateCopy() throws SQLException {
+        return false;
+    }
+
+    public boolean supportsStatementPooling() throws SQLException {
+        return false;
+    }
+
+    public RowIdLifetime getRowIdLifetime() throws SQLException {
+        return null;
+    }
+
+    public ResultSet getSchemas(String catalog, String schemaPattern) throws SQLException {
+        return null;
+    }
+
+    public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException {
+        return false;
+    }
+
+    public boolean autoCommitFailureClosesAllResultSets() throws SQLException {
+        return false;
+    }
+
+    public ResultSet getClientInfoProperties() throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getFunctions(String catalog, String schemaPattern, String functionNamePattern)
+            throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getFunctionColumns(String catalog, String schemaPattern, String functionNamePattern,
+                                        String columnNamePattern) throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public ResultSet getPseudoColumns(String catalog, String schemaPattern, String tableNamePattern,
+                                      String columnNamePattern) throws SQLException {
+        return getEmptyResultSet();
+    }
+
+    public boolean generatedKeyAlwaysReturned() throws SQLException {
+        return false;
+    }
+
+    private ResultSet getEmptyResultSet() {
+        return new EmptyResultSet();
+    }
+}

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConstants.java

@@ -46,6 +46,9 @@ public abstract class TSDBConstants {
     public static final int TSDB_DATA_TYPE_TIMESTAMP = 9;
     public static final int TSDB_DATA_TYPE_NCHAR = 10;
 
+    // nchar field's max length
+    public static final int maxFieldSize = 16 * 1024;
+
     public static String WrapErrMsg(String msg) {
         return "TDengine Error: " + msg;
     }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulConnection.java

@@ -1,19 +1,29 @@
 package com.taosdata.jdbc.rs;
 
 import com.taosdata.jdbc.TSDBConstants;
+import com.taosdata.jdbc.TSDBDriver;
 
 import java.sql.*;
+import java.util.Enumeration;
+import java.util.HashMap;
 import java.util.Map;
 import java.util.Properties;
 import java.util.concurrent.Executor;
 
 public class RestfulConnection implements Connection {
 
+    private static final String CONNECTION_IS_CLOSED = "connection is closed.";
+    private static final String AUTO_COMMIT_IS_TRUE = "auto commit is true";
     private final String host;
     private final int port;
     private final Properties props;
-    private final String database;
+    private volatile String database;
     private final String url;
+    /******************************************************/
+    private boolean isClosed;
+    private DatabaseMetaData metadata;
+    private Map<String, Class<?>> typeMap;
+    private Properties clientInfoProps = new Properties();
 
     public RestfulConnection(String host, String port, Properties props, String database, String url) {
         this.host = host;
@@ -21,280 +31,424 @@ public class RestfulConnection implements Connection {
         this.props = props;
         this.database = database;
         this.url = url;
+        this.metadata = new RestfulDatabaseMetaData(url, props.getProperty(TSDBDriver.PROPERTY_KEY_USER), this);
     }
 
     @Override
     public Statement createStatement() throws SQLException {
         if (isClosed())
-            throw new SQLException(TSDBConstants.WrapErrMsg("restful TDengine connection is closed."));
+            throw new SQLException(CONNECTION_IS_CLOSED);
+
         return new RestfulStatement(this, database);
     }
 
     @Override
     public PreparedStatement prepareStatement(String sql) throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        //TODO: prepareStatement
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public CallableStatement prepareCall(String sql) throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public String nativeSQL(String sql) throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+
+        //nothing did
+        return sql;
     }
 
     @Override
     public void setAutoCommit(boolean autoCommit) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        if (!autoCommit)
+            throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public boolean getAutoCommit() throws SQLException {
-        return false;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        return true;
     }
 
     @Override
     public void commit() throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        if (getAutoCommit())
+            throw new SQLException(AUTO_COMMIT_IS_TRUE);
+        //nothing to do
     }
 
     @Override
     public void rollback() throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        if (getAutoCommit())
+            throw new SQLException(AUTO_COMMIT_IS_TRUE);
+        //nothing to do
     }
 
     @Override
     public void close() throws SQLException {
-
+        if (isClosed)
+            return;
+        //TODO: release all resources
+        isClosed = true;
     }
 
     @Override
     public boolean isClosed() throws SQLException {
-        return false;
+        return isClosed;
     }
 
     @Override
     public DatabaseMetaData getMetaData() throws SQLException {
-        //TODO: RestfulDatabaseMetaData is not implemented
-        return new RestfulDatabaseMetaData();
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+
+        return this.metadata;
     }
 
     @Override
     public void setReadOnly(boolean readOnly) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        // nothing to do
     }
 
     @Override
     public boolean isReadOnly() throws SQLException {
-        return false;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        return true;
     }
 
     @Override
     public void setCatalog(String catalog) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        synchronized (RestfulConnection.class) {
+            this.database = catalog;
+        }
     }
 
     @Override
     public String getCatalog() throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        return this.database;
     }
 
     @Override
     public void setTransactionIsolation(int level) throws SQLException {
-        //transaction is not supported
-        throw new SQLFeatureNotSupportedException("transactions are not supported");
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        switch (level) {
+            case Connection.TRANSACTION_NONE:
+                break;
+            case Connection.TRANSACTION_READ_UNCOMMITTED:
+            case Connection.TRANSACTION_READ_COMMITTED:
+            case Connection.TRANSACTION_REPEATABLE_READ:
+            case Connection.TRANSACTION_SERIALIZABLE:
+                throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
+            default:
+                throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+        }
     }
 
-    /**
-     *
-     */
     @Override
     public int getTransactionIsolation() throws SQLException {
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
         //Connection.TRANSACTION_NONE specifies that transactions are not supported.
         return Connection.TRANSACTION_NONE;
     }
 
     @Override
     public SQLWarning getWarnings() throws SQLException {
-        //TODO: getWarnings not implemented
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+
         return null;
     }
 
     @Override
     public void clearWarnings() throws SQLException {
-        throw new SQLFeatureNotSupportedException("clearWarnings not supported.");
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        //nothing to do
     }
 
     @Override
     public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+
+        if (resultSetType != ResultSet.TYPE_FORWARD_ONLY) {
+            throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
+        }
+        if (resultSetConcurrency != ResultSet.CONCUR_READ_ONLY)
+            throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
+        return createStatement();
     }
 
     @Override
     public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        if (resultSetType != ResultSet.TYPE_FORWARD_ONLY || resultSetConcurrency != ResultSet.CONCUR_READ_ONLY)
+            throw new SQLFeatureNotSupportedException(TSDBConstants.INVALID_VARIABLES);
+
+        return this.prepareStatement(sql);
     }
 
     @Override
     public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        if (resultSetType != ResultSet.TYPE_FORWARD_ONLY || resultSetConcurrency != ResultSet.CONCUR_READ_ONLY)
+            throw new SQLFeatureNotSupportedException(TSDBConstants.INVALID_VARIABLES);
+
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public Map<String, Class<?>> getTypeMap() throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+
+        synchronized (RestfulConnection.class) {
+            if (this.typeMap == null) {
+                this.typeMap = new HashMap<>();
+            }
+            return this.typeMap;
+        }
     }
 
     @Override
     public void setTypeMap(Map<String, Class<?>> map) throws SQLException {
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
 
+        synchronized (RestfulConnection.class) {
+            this.typeMap = map;
+        }
     }
 
     @Override
     public void setHoldability(int holdability) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        if (holdability != ResultSet.HOLD_CURSORS_OVER_COMMIT)
+            throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public int getHoldability() throws SQLException {
-        return 0;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        return ResultSet.HOLD_CURSORS_OVER_COMMIT;
     }
 
     @Override
     public Savepoint setSavepoint() throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        if (getAutoCommit())
+            throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+        //nothing to do
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public Savepoint setSavepoint(String name) throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        if (getAutoCommit())
+            throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+        //nothing to do
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public void rollback(Savepoint savepoint) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        if (getAutoCommit())
+            throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+        //nothing to do
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public void releaseSavepoint(Savepoint savepoint) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
-        return null;
+        if (resultSetHoldability != ResultSet.HOLD_CURSORS_OVER_COMMIT)
+            throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
+        return createStatement(resultSetType, resultSetConcurrency);
     }
 
     @Override
     public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
-        return null;
+        if (resultSetHoldability != ResultSet.HOLD_CURSORS_OVER_COMMIT)
+            throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
+        return prepareStatement(sql, resultSetType, resultSetConcurrency);
     }
 
     @Override
     public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
-        return null;
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
-        return null;
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
-        return null;
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
-        return null;
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public Clob createClob() throws SQLException {
-        //TODO: not supported
-        throw new SQLFeatureNotSupportedException();
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public Blob createBlob() throws SQLException {
-        //TODO: not supported
-        throw new SQLFeatureNotSupportedException();
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public NClob createNClob() throws SQLException {
-        //TODO: not supported
-        throw new SQLFeatureNotSupportedException();
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public SQLXML createSQLXML() throws SQLException {
-        //TODO: not supported
-        throw new SQLFeatureNotSupportedException();
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public boolean isValid(int timeout) throws SQLException {
-        return false;
+        if (timeout < 0)
+            throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+        // TODO:
+        /* The driver shall submit a query on the connection or use some other mechanism that positively verifies
+         the connection is still valid when this method is called.*/
+        return !isClosed();
     }
 
     @Override
     public void setClientInfo(String name, String value) throws SQLClientInfoException {
-
+        if (isClosed)
+            throw new SQLClientInfoException();
+        clientInfoProps.setProperty(name, value);
     }
 
     @Override
     public void setClientInfo(Properties properties) throws SQLClientInfoException {
+        if (isClosed)
+            throw new SQLClientInfoException();
 
+        for (Enumeration<Object> enumer = properties.keys(); enumer.hasMoreElements(); ) {
+            String name = (String) enumer.nextElement();
+            clientInfoProps.put(name, properties.getProperty(name));
+        }
     }
 
     @Override
     public String getClientInfo(String name) throws SQLException {
-        return null;
+        if (isClosed)
+            throw new SQLClientInfoException();
+
+        return clientInfoProps.getProperty(name);
     }
 
     @Override
     public Properties getClientInfo() throws SQLException {
-        return null;
+        if (isClosed)
+            throw new SQLClientInfoException();
+
+        return clientInfoProps;
     }
 
     @Override
     public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
-        //TODO: not supported
-        throw new SQLFeatureNotSupportedException();
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
-        //TODO: not supported
-        throw new SQLFeatureNotSupportedException();
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public void setSchema(String schema) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        synchronized (RestfulConnection.class) {
+            this.database = schema;
+        }
     }
 
     @Override
     public String getSchema() throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        return this.database;
     }
 
     @Override
     public void abort(Executor executor) throws SQLException {
+        if (executor == null) {
+            throw new SQLException("Executor can not be null");
+        }
 
+        executor.execute(() -> {
+            try {
+                close();
+            } catch (SQLException e) {
+                e.printStackTrace();
+            }
+        });
     }
 
     @Override
     public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public int getNetworkTimeout() throws SQLException {
+        if (isClosed())
+            throw new SQLException(CONNECTION_IS_CLOSED);
         return 0;
     }
 

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDatabaseMetaData.java

@@ -1,307 +1,32 @@
 package com.taosdata.jdbc.rs;
 
+import com.taosdata.jdbc.*;
+
 import java.sql.*;
+import java.util.ArrayList;
+import java.util.List;
 
-public class RestfulDatabaseMetaData implements DatabaseMetaData {
+public class RestfulDatabaseMetaData extends AbstractDatabaseMetaData {
 
-    @Override
-    public boolean allProceduresAreCallable() throws SQLException {
-        return false;
-    }
 
-    @Override
-    public boolean allTablesAreSelectable() throws SQLException {
-        return false;
+    private final String url;
+    private final String userName;
+    private final Connection connection;
+
+    public RestfulDatabaseMetaData(String url, String userName, Connection connection) {
+        this.url = url;
+        this.userName = userName;
+        this.connection = connection;
     }
 
     @Override
     public String getURL() throws SQLException {
-        return null;
+        return this.url;
     }
 
     @Override
     public String getUserName() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public boolean isReadOnly() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean nullsAreSortedHigh() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean nullsAreSortedLow() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean nullsAreSortedAtStart() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean nullsAreSortedAtEnd() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public String getDatabaseProductName() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public String getDatabaseProductVersion() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public String getDriverName() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public String getDriverVersion() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public int getDriverMajorVersion() {
-        return 0;
-    }
-
-    @Override
-    public int getDriverMinorVersion() {
-        return 0;
-    }
-
-    @Override
-    public boolean usesLocalFiles() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean usesLocalFilePerTable() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsMixedCaseIdentifiers() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean storesUpperCaseIdentifiers() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean storesLowerCaseIdentifiers() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean storesMixedCaseIdentifiers() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean storesUpperCaseQuotedIdentifiers() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean storesLowerCaseQuotedIdentifiers() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean storesMixedCaseQuotedIdentifiers() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public String getIdentifierQuoteString() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public String getSQLKeywords() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public String getNumericFunctions() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public String getStringFunctions() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public String getSystemFunctions() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public String getTimeDateFunctions() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public String getSearchStringEscape() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public String getExtraNameCharacters() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public boolean supportsAlterTableWithAddColumn() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsAlterTableWithDropColumn() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsColumnAliasing() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean nullPlusNonNullIsNull() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsConvert() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsConvert(int fromType, int toType) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsTableCorrelationNames() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsDifferentTableCorrelationNames() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsExpressionsInOrderBy() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsOrderByUnrelated() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsGroupBy() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsGroupByUnrelated() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsGroupByBeyondSelect() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsLikeEscapeClause() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsMultipleResultSets() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsMultipleTransactions() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsNonNullableColumns() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsMinimumSQLGrammar() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsCoreSQLGrammar() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsExtendedSQLGrammar() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsANSI92EntryLevelSQL() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsANSI92IntermediateSQL() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsANSI92FullSQL() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsIntegrityEnhancementFacility() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsOuterJoins() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsFullOuterJoins() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsLimitedOuterJoins() throws SQLException {
-        return false;
+        return this.userName;
     }
 
     @Override
@@ -324,555 +49,150 @@ public class RestfulDatabaseMetaData implements DatabaseMetaData {
         return false;
     }
 
-    @Override
-    public String getCatalogSeparator() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public boolean supportsSchemasInDataManipulation() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsSchemasInProcedureCalls() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsSchemasInTableDefinitions() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsSchemasInIndexDefinitions() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsCatalogsInDataManipulation() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsCatalogsInProcedureCalls() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsCatalogsInTableDefinitions() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsCatalogsInIndexDefinitions() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsPositionedDelete() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsPositionedUpdate() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsSelectForUpdate() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsStoredProcedures() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsSubqueriesInComparisons() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsSubqueriesInExists() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsSubqueriesInIns() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsSubqueriesInQuantifieds() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsCorrelatedSubqueries() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsUnion() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsUnionAll() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsOpenCursorsAcrossCommit() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsOpenCursorsAcrossRollback() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsOpenStatementsAcrossCommit() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsOpenStatementsAcrossRollback() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public int getMaxBinaryLiteralLength() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxCharLiteralLength() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxColumnNameLength() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxColumnsInGroupBy() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxColumnsInIndex() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxColumnsInOrderBy() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxColumnsInSelect() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxColumnsInTable() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxConnections() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxCursorNameLength() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxIndexLength() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxSchemaNameLength() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxProcedureNameLength() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxCatalogNameLength() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxRowSize() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public boolean doesMaxRowSizeIncludeBlobs() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public int getMaxStatementLength() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxStatements() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxTableNameLength() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxTablesInSelect() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getMaxUserNameLength() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getDefaultTransactionIsolation() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public boolean supportsTransactions() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsTransactionIsolationLevel(int level) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsDataManipulationTransactionsOnly() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean dataDefinitionCausesTransactionCommit() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean dataDefinitionIgnoredInTransactions() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public ResultSet getProcedures(String catalog, String schemaPattern, String procedureNamePattern) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern, String columnNamePattern) throws SQLException {
-        return null;
-    }
-
     @Override
     public ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types) throws SQLException {
-        return null;
+        Statement stmt = null;
+        if (null != connection && !connection.isClosed()) {
+            stmt = connection.createStatement();
+            if (catalog == null || catalog.length() < 1) {
+                catalog = connection.getCatalog();
+            }
+            stmt.executeUpdate("use " + catalog);
+            ResultSet resultSet0 = stmt.executeQuery("show tables");
+            GetTablesResultSet getTablesResultSet = new GetTablesResultSet(resultSet0, catalog, schemaPattern, tableNamePattern, types);
+            return getTablesResultSet;
+        } else {
+            throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
         }
-
-    @Override
-    public ResultSet getSchemas() throws SQLException {
-        return null;
     }
 
     @Override
     public ResultSet getCatalogs() throws SQLException {
-        return null;
+        if (connection != null && !connection.isClosed()) {
+            Statement stmt = connection.createStatement();
+            ResultSet resultSet0 = stmt.executeQuery("show databases");
+            CatalogResultSet resultSet = new CatalogResultSet(resultSet0);
+            return resultSet;
+        } else {
+            return new EmptyResultSet();
         }
-
-    @Override
-    public ResultSet getTableTypes() throws SQLException {
-        return null;
     }
 
     @Override
     public ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
-        return null;
+        Statement stmt = null;
+        if (null != connection && !connection.isClosed()) {
+            stmt = connection.createStatement();
+            if (catalog == null || catalog.length() < 1) {
+                catalog = connection.getCatalog();
+            }
+            stmt.execute("use " + catalog);
+
+            DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
+            // set up ColumnMetaDataList
+            List<ColumnMetaData> columnMetaDataList = new ArrayList<>(24);
+            columnMetaDataList.add(null);
+            columnMetaDataList.add(null);
+            // add TABLE_NAME
+            ColumnMetaData colMetaData = new ColumnMetaData();
+            colMetaData.setColIndex(3);
+            colMetaData.setColName("TABLE_NAME");
+            colMetaData.setColSize(193);
+            colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_BINARY);
+            columnMetaDataList.add(colMetaData);
+            // add COLUMN_NAME
+            colMetaData = new ColumnMetaData();
+            colMetaData.setColIndex(4);
+            colMetaData.setColName("COLUMN_NAME");
+            colMetaData.setColSize(65);
+            colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_BINARY);
+            columnMetaDataList.add(colMetaData);
+            // add DATA_TYPE
+            colMetaData = new ColumnMetaData();
+            colMetaData.setColIndex(5);
+            colMetaData.setColName("DATA_TYPE");
+            colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
+            columnMetaDataList.add(colMetaData);
+            // add TYPE_NAME
+            colMetaData = new ColumnMetaData();
+            colMetaData.setColIndex(6);
+            colMetaData.setColName("TYPE_NAME");
+            colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_BINARY);
+            columnMetaDataList.add(colMetaData);
+            // add COLUMN_SIZE
+            colMetaData = new ColumnMetaData();
+            colMetaData.setColIndex(7);
+            colMetaData.setColName("COLUMN_SIZE");
+            colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
+            columnMetaDataList.add(colMetaData);
+            // add BUFFER_LENGTH ,not used
+            columnMetaDataList.add(null);
+            // add DECIMAL_DIGITS
+            colMetaData = new ColumnMetaData();
+            colMetaData.setColIndex(9);
+            colMetaData.setColName("DECIMAL_DIGITS");
+            colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
+            columnMetaDataList.add(colMetaData);
+            // add NUM_PREC_RADIX
+            colMetaData = new ColumnMetaData();
+            colMetaData.setColIndex(10);
+            colMetaData.setColName("NUM_PREC_RADIX");
+            colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
+            columnMetaDataList.add(colMetaData);
+            // add NULLABLE
+            colMetaData = new ColumnMetaData();
+            colMetaData.setColIndex(11);
+            colMetaData.setColName("NULLABLE");
+            colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
+            columnMetaDataList.add(colMetaData);
+
+            resultSet.setColumnMetaDataList(columnMetaDataList);
+
+            // set up rowDataList
+            ResultSet resultSet0 = stmt.executeQuery("describe " + tableNamePattern);
+            List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
+            int index = 0;
+            while (resultSet0.next()) {
+                TSDBResultSetRowData rowData = new TSDBResultSetRowData(24);
+                // set TABLE_NAME
+                rowData.setString(2, tableNamePattern);
+                // set COLUMN_NAME
+                rowData.setString(3, resultSet0.getString(1));
+                // set DATA_TYPE
+                String typeName = resultSet0.getString(2);
+                rowData.setInt(4, getDataType(typeName));
+                // set TYPE_NAME
+                rowData.setString(5, typeName);
+                // set COLUMN_SIZE
+                int length = resultSet0.getInt(3);
+                rowData.setInt(6, getColumnSize(typeName, length));
+                // set DECIMAL_DIGITS
+                rowData.setInt(8, getDecimalDigits(typeName));
+                // set NUM_PREC_RADIX
+                rowData.setInt(9, 10);
+                // set NULLABLE
+                rowData.setInt(10, getNullable(index, typeName));
+                rowDataList.add(rowData);
+                index++;
+            }
+            resultSet.setRowDataList(rowDataList);
+
+            return resultSet;
+        } else {
+            throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
+        }
     }
 
     @Override
-    public ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getVersionColumns(String catalog, String schema, String table) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getExportedKeys(String catalog, String schema, String table) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getCrossReference(String parentCatalog, String parentSchema, String parentTable, String foreignCatalog, String foreignSchema, String foreignTable) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getTypeInfo() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public boolean supportsResultSetType(int type) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsResultSetConcurrency(int type, int concurrency) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean ownUpdatesAreVisible(int type) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean ownDeletesAreVisible(int type) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean ownInsertsAreVisible(int type) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean othersUpdatesAreVisible(int type) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean othersDeletesAreVisible(int type) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean othersInsertsAreVisible(int type) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean updatesAreDetected(int type) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean deletesAreDetected(int type) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean insertsAreDetected(int type) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsBatchUpdates() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public ResultSet getUDTs(String catalog, String schemaPattern, String typeNamePattern, int[] types) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public Connection getConnection() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public boolean supportsSavepoints() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsNamedParameters() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsMultipleOpenResults() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean supportsGetGeneratedKeys() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public ResultSet getSuperTypes(String catalog, String schemaPattern, String typeNamePattern) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getAttributes(String catalog, String schemaPattern, String typeNamePattern, String attributeNamePattern) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public boolean supportsResultSetHoldability(int holdability) throws SQLException {
-        return false;
-    }
-
-    @Override
-    public int getResultSetHoldability() throws SQLException {
+    public long getMaxLogicalLobSize() throws SQLException {
         return 0;
     }
 
     @Override
-    public int getDatabaseMajorVersion() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getDatabaseMinorVersion() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getJDBCMajorVersion() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getJDBCMinorVersion() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public int getSQLStateType() throws SQLException {
-        return 0;
-    }
-
-    @Override
-    public boolean locatorsUpdateCopy() throws SQLException {
+    public boolean supportsRefCursors() throws SQLException {
         return false;
     }
 
-    @Override
-    public boolean supportsStatementPooling() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public RowIdLifetime getRowIdLifetime() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getSchemas(String catalog, String schemaPattern) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public boolean autoCommitFailureClosesAllResultSets() throws SQLException {
-        return false;
-    }
-
-    @Override
-    public ResultSet getClientInfoProperties() throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getFunctions(String catalog, String schemaPattern, String functionNamePattern) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getFunctionColumns(String catalog, String schemaPattern, String functionNamePattern, String columnNamePattern) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public ResultSet getPseudoColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
-        return null;
-    }
-
-    @Override
-    public boolean generatedKeyAlwaysReturned() throws SQLException {
-        return false;
-    }
 
     @Override
     public <T> T unwrap(Class<T> iface) throws SQLException {

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDriver.java

@@ -33,7 +33,7 @@ public class RestfulDriver extends AbstractTaosDriver {
             return null;
 
         Properties props = parseURL(url, info);
-        String host = props.getProperty(TSDBDriver.PROPERTY_KEY_HOST, "localhost");
+        String host = props.getProperty(TSDBDriver.PROPERTY_KEY_HOST);
         String port = props.getProperty(TSDBDriver.PROPERTY_KEY_PORT, "6041");
         String database = props.containsKey(TSDBDriver.PROPERTY_KEY_DBNAME) ? props.getProperty(TSDBDriver.PROPERTY_KEY_DBNAME) : null;
 

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulResultSetMetaData.java

@@ -2,13 +2,15 @@ package com.taosdata.jdbc.rs;
 
 import java.sql.ResultSetMetaData;
 import java.sql.SQLException;
-import java.util.List;
+import java.util.ArrayList;
 
 public class RestfulResultSetMetaData implements ResultSetMetaData {
 
-    private List<String> fields;
+    private final String database;
+    private ArrayList<RestfulResultSet.Field> fields;
 
-    public RestfulResultSetMetaData(List<String> fields) {
+    public RestfulResultSetMetaData(String database, ArrayList<RestfulResultSet.Field> fields) {
+        this.database = database;
         this.fields = fields;
     }
 
@@ -24,6 +26,7 @@ public class RestfulResultSetMetaData implements ResultSetMetaData {
 
     @Override
     public boolean isCaseSensitive(int column) throws SQLException {
+        //TODO
         return false;
     }
 
@@ -39,7 +42,7 @@ public class RestfulResultSetMetaData implements ResultSetMetaData {
 
     @Override
     public int isNullable(int column) throws SQLException {
-        return 0;
+        return ResultSetMetaData.columnNullable;
     }
 
     @Override
@@ -54,7 +57,7 @@ public class RestfulResultSetMetaData implements ResultSetMetaData {
 
     @Override
     public String getColumnLabel(int column) throws SQLException {
-        return fields.get(column - 1);
+        return fields.get(column - 1).name;
     }
 
     @Override
@@ -64,7 +67,7 @@ public class RestfulResultSetMetaData implements ResultSetMetaData {
 
     @Override
     public String getSchemaName(int column) throws SQLException {
-        return null;
+        return this.database;
     }
 
     @Override
@@ -84,7 +87,7 @@ public class RestfulResultSetMetaData implements ResultSetMetaData {
 
     @Override
     public String getCatalogName(int column) throws SQLException {
-        return null;
+        return this.database;
     }
 
     @Override

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulStatement.java

@@ -7,20 +7,60 @@ import com.taosdata.jdbc.rs.util.HttpClientPoolUtil;
 import com.taosdata.jdbc.utils.SqlSyntaxValidator;
 
 import java.sql.*;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.stream.Collectors;
 
 public class RestfulStatement implements Statement {
 
+    private static final String STATEMENT_CLOSED = "Statement already closed.";
     private boolean closed;
     private String database;
     private final RestfulConnection conn;
 
-    public RestfulStatement(RestfulConnection c, String database) {
-        this.conn = c;
+    private volatile RestfulResultSet resultSet;
+    private volatile int affectedRows;
+    private volatile boolean closeOnCompletion;
+
+    public RestfulStatement(RestfulConnection conn, String database) {
+        this.conn = conn;
         this.database = database;
     }
 
+    private String[] parseTableIdentifier(String sql) {
+        sql = sql.trim().toLowerCase();
+        String[] ret = null;
+        if (sql.contains("where"))
+            sql = sql.substring(0, sql.indexOf("where"));
+        if (sql.contains("interval"))
+            sql = sql.substring(0, sql.indexOf("interval"));
+        if (sql.contains("fill"))
+            sql = sql.substring(0, sql.indexOf("fill"));
+        if (sql.contains("sliding"))
+            sql = sql.substring(0, sql.indexOf("sliding"));
+        if (sql.contains("group by"))
+            sql = sql.substring(0, sql.indexOf("group by"));
+        if (sql.contains("order by"))
+            sql = sql.substring(0, sql.indexOf("order by"));
+        if (sql.contains("slimit"))
+            sql = sql.substring(0, sql.indexOf("slimit"));
+        if (sql.contains("limit"))
+            sql = sql.substring(0, sql.indexOf("limit"));
+        // parse
+        if (sql.contains("from")) {
+            sql = sql.substring(sql.indexOf("from") + 4).trim();
+            return Arrays.asList(sql.split(",")).stream()
+                    .map(tableIdentifier -> {
+                        tableIdentifier = tableIdentifier.trim();
+                        if (tableIdentifier.contains(" "))
+                            tableIdentifier = tableIdentifier.substring(0, tableIdentifier.indexOf(" "));
+                        return tableIdentifier;
+                    }).collect(Collectors.joining(",")).split(",");
+        }
+        return ret;
+    }
+
     @Override
     public ResultSet executeQuery(String sql) throws SQLException {
         if (isClosed())
@@ -29,43 +69,33 @@ public class RestfulStatement implements Statement {
             throw new SQLException("not a select sql for executeQuery: " + sql);
 
         final String url = "http://" + conn.getHost() + ":" + conn.getPort() + "/rest/sql";
+        // row data
         String result = HttpClientPoolUtil.execute(url, sql);
-        String fields = "";
-        List<String> words = Arrays.asList(sql.split(" "));
-        if (words.get(0).equalsIgnoreCase("select")) {
-            int index = 0;
-            if (words.contains("from")) {
-                index = words.indexOf("from");
-            }
-            if (words.contains("FROM")) {
-                index = words.indexOf("FROM");
-            }
-            fields = HttpClientPoolUtil.execute(url, "DESCRIBE " + words.get(index + 1));
+        JSONObject resultJson = JSON.parseObject(result);
+        if (resultJson.getString("status").equals("error")) {
+            throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " + resultJson.getString("desc") + "\n" + "error code: " + resultJson.getString("code")));
         }
 
-        JSONObject jsonObject = JSON.parseObject(result);
-        if (jsonObject.getString("status").equals("error")) {
-            throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " +
-                    jsonObject.getString("desc") + "\n" +
-                    "error code: " + jsonObject.getString("code")));
+        // parse table name from sql
+        String[] tableIdentifiers = parseTableIdentifier(sql);
+        if (tableIdentifiers != null) {
+            List<JSONObject> fieldJsonList = new ArrayList<>();
+            for (String tableIdentifier : tableIdentifiers) {
+                // field meta
+                String fields = HttpClientPoolUtil.execute(url, "DESCRIBE " + tableIdentifier);
+                JSONObject fieldJson = JSON.parseObject(fields);
+                if (fieldJson.getString("status").equals("error")) {
+                    throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " + fieldJson.getString("desc") + "\n" + "error code: " + fieldJson.getString("code")));
                 }
-        String dataStr = jsonObject.getString("data");
-        if ("use".equalsIgnoreCase(fields.split(" ")[0])) {
-            return new RestfulResultSet(dataStr, "");
+                fieldJsonList.add(fieldJson);
+            }
+            this.resultSet = new RestfulResultSet(database, this, resultJson, fieldJsonList);
+        } else {
+            this.resultSet = new RestfulResultSet(database, this, resultJson);
         }
 
-        JSONObject jsonField = JSON.parseObject(fields);
-        if (jsonField == null) {
-            return new RestfulResultSet(dataStr, "");
-        }
-        if (jsonField.getString("status").equals("error")) {
-            throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " +
-                    jsonField.getString("desc") + "\n" +
-                    "error code: " + jsonField.getString("code")));
-        }
-        String fieldData = jsonField.getString("data");
-
-        return new RestfulResultSet(dataStr, fieldData);
+        this.affectedRows = 0;
+        return resultSet;
     }
 
     @Override
@@ -78,77 +108,103 @@ public class RestfulStatement implements Statement {
         if (this.database == null)
             throw new SQLException("Database not specified or available");
 
-        final String url = "http://" + conn.getHost() + ":" + conn.getPort() + "/rest/sql";
-        HttpClientPoolUtil.execute(url, "use " + conn.getDatabase());
+        final String url = "http://" + conn.getHost().trim() + ":" + conn.getPort() + "/rest/sql";
+//        HttpClientPoolUtil.execute(url, "use " + conn.getDatabase());
         String result = HttpClientPoolUtil.execute(url, sql);
         JSONObject jsonObject = JSON.parseObject(result);
         if (jsonObject.getString("status").equals("error")) {
-            throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " +
-                    jsonObject.getString("desc") + "\n" +
-                    "error code: " + jsonObject.getString("code")));
+            throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " + jsonObject.getString("desc") + "\n" + "error code: " + jsonObject.getString("code")));
         }
-        return Integer.parseInt(jsonObject.getString("rows"));
+        this.resultSet = null;
+        this.affectedRows = Integer.parseInt(jsonObject.getString("rows"));
+        return this.affectedRows;
     }
 
     @Override
     public void close() throws SQLException {
+        synchronized (RestfulStatement.class) {
+            if (!isClosed())
                 this.closed = true;
         }
+    }
 
     @Override
     public int getMaxFieldSize() throws SQLException {
-        return 0;
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        return TSDBConstants.maxFieldSize;
     }
 
     @Override
     public void setMaxFieldSize(int max) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        if (max < 0)
+            throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+        // nothing to do
     }
 
     @Override
     public int getMaxRows() throws SQLException {
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
         return 0;
     }
 
     @Override
     public void setMaxRows(int max) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        if (max < 0)
+            throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+        // nothing to do
     }
 
     @Override
     public void setEscapeProcessing(boolean enable) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(RestfulStatement.STATEMENT_CLOSED);
     }
 
     @Override
     public int getQueryTimeout() throws SQLException {
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
         return 0;
     }
 
     @Override
     public void setQueryTimeout(int seconds) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        if (seconds < 0)
+            throw new SQLException(TSDBConstants.INVALID_VARIABLES);
     }
 
     @Override
     public void cancel() throws SQLException {
-
+        throw new SQLException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public SQLWarning getWarnings() throws SQLException {
-        //TODO: getWarnings not Implemented
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
         return null;
     }
 
     @Override
     public void clearWarnings() throws SQLException {
-
+        // nothing to do
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
     }
 
     @Override
     public void setCursorName(String name) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(RestfulStatement.STATEMENT_CLOSED);
+        throw new SQLException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
@@ -159,133 +215,181 @@ public class RestfulStatement implements Statement {
         //如果执行了use操作应该将当前Statement的catalog设置为新的database
         if (SqlSyntaxValidator.isUseSql(sql)) {
             this.database = sql.trim().replace("use", "").trim();
+            this.conn.setCatalog(this.database);
         }
         if (this.database == null)
             throw new SQLException("Database not specified or available");
 
-        final String url = "http://" + conn.getHost() + ":" + conn.getPort() + "/rest/sql";
-        // use database
+        if (SqlSyntaxValidator.isSelectSql(sql)) {
+            executeQuery(sql);
+        } else if (SqlSyntaxValidator.isShowSql(sql) || SqlSyntaxValidator.isDescribeSql(sql)) {
+            final String url = "http://" + conn.getHost().trim() + ":" + conn.getPort() + "/rest/sql";
+            if (!SqlSyntaxValidator.isShowDatabaseSql(sql)) {
                 HttpClientPoolUtil.execute(url, "use " + conn.getDatabase());
-        // execute sql
-        String result = HttpClientPoolUtil.execute(url, sql);
-        // parse result
-        JSONObject jsonObject = JSON.parseObject(result);
-        if (jsonObject.getString("status").equals("error")) {
-            throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " +
-                    jsonObject.getString("desc") + "\n" +
-                    "error code: " + jsonObject.getString("code")));
             }
+            String result = HttpClientPoolUtil.execute(url, sql);
+            JSONObject resultJson = JSON.parseObject(result);
+            if (resultJson.getString("status").equals("error")) {
+                throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " + resultJson.getString("desc") + "\n" + "error code: " + resultJson.getString("code")));
+            }
+            this.resultSet = new RestfulResultSet(database, this, resultJson);
+        } else {
+            executeUpdate(sql);
+        }
+
         return true;
     }
 
     @Override
     public ResultSet getResultSet() throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        return resultSet;
     }
 
     @Override
     public int getUpdateCount() throws SQLException {
-        return 0;
+        if (isClosed()) {
+            throw new SQLException("Invalid method call on a closed statement.");
+        }
+        return this.affectedRows;
     }
 
     @Override
     public boolean getMoreResults() throws SQLException {
-        return false;
+        return getMoreResults(CLOSE_CURRENT_RESULT);
     }
 
     @Override
     public void setFetchDirection(int direction) throws SQLException {
-
+        if (direction != ResultSet.FETCH_FORWARD && direction != ResultSet.FETCH_REVERSE && direction != ResultSet.FETCH_UNKNOWN)
+            throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+        this.resultSet.setFetchDirection(direction);
     }
 
     @Override
     public int getFetchDirection() throws SQLException {
-        return 0;
+        return this.resultSet.getFetchDirection();
     }
 
     @Override
     public void setFetchSize(int rows) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        if (rows < 0)
+            throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+        //nothing to do
     }
 
     @Override
     public int getFetchSize() throws SQLException {
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
         return 0;
     }
 
     @Override
     public int getResultSetConcurrency() throws SQLException {
-        return 0;
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        return this.resultSet.getConcurrency();
     }
 
     @Override
     public int getResultSetType() throws SQLException {
-        return 0;
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        return this.resultSet.getType();
     }
 
     @Override
     public void addBatch(String sql) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        //TODO:
     }
 
     @Override
     public void clearBatch() throws SQLException {
-
+        //TODO:
     }
 
     @Override
     public int[] executeBatch() throws SQLException {
+        //TODO:
         return new int[0];
     }
 
     @Override
     public Connection getConnection() throws SQLException {
-        return null;
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        return this.conn;
     }
 
     @Override
     public boolean getMoreResults(int current) throws SQLException {
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        if (resultSet == null)
+            return false;
+
+//        switch (current) {
+//            case CLOSE_CURRENT_RESULT:
+//                resultSet.close();
+//                break;
+//            case KEEP_CURRENT_RESULT:
+//                break;
+//            case CLOSE_ALL_RESULTS:
+//                resultSet.close();
+//                break;
+//            default:
+//                throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+//        }
+//        return next;
         return false;
     }
 
     @Override
     public ResultSet getGeneratedKeys() throws SQLException {
-        return null;
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
-        return 0;
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public int executeUpdate(String sql, int[] columnIndexes) throws SQLException {
-        return 0;
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public int executeUpdate(String sql, String[] columnNames) throws SQLException {
-        return 0;
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public boolean execute(String sql, int autoGeneratedKeys) throws SQLException {
-        return false;
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public boolean execute(String sql, int[] columnIndexes) throws SQLException {
-        return false;
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public boolean execute(String sql, String[] columnNames) throws SQLException {
-        return false;
+        throw new SQLFeatureNotSupportedException(TSDBConstants.UNSUPPORT_METHOD_EXCEPTIONZ_MSG);
     }
 
     @Override
     public int getResultSetHoldability() throws SQLException {
-        return 0;
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        return this.resultSet.getHoldability();
     }
 
     @Override
@@ -295,22 +399,30 @@ public class RestfulStatement implements Statement {
 
     @Override
     public void setPoolable(boolean poolable) throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        //nothing to do
     }
 
     @Override
     public boolean isPoolable() throws SQLException {
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
         return false;
     }
 
     @Override
     public void closeOnCompletion() throws SQLException {
-
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        this.closeOnCompletion = true;
     }
 
     @Override
     public boolean isCloseOnCompletion() throws SQLException {
-        return false;
+        if (isClosed())
+            throw new SQLException(STATEMENT_CLOSED);
+        return this.closeOnCompletion;
     }
 
     @Override

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/util/HttpClientPoolUtil.java

@@ -17,6 +17,8 @@ import org.apache.http.protocol.HTTP;
 import org.apache.http.protocol.HttpContext;
 import org.apache.http.util.EntityUtils;
 
+import java.nio.charset.Charset;
+
 
 public class HttpClientPoolUtil {
     public static PoolingHttpClientConnectionManager cm = null;
@@ -94,7 +96,9 @@ public class HttpClientPoolUtil {
                 initPools();
             }
             method = (HttpEntityEnclosingRequestBase) getRequest(uri, HttpPost.METHOD_NAME, DEFAULT_CONTENT_TYPE, 0);
-            method.setEntity(new StringEntity(data));
+            method.setHeader("Authorization", "Basic cm9vdDp0YW9zZGF0YQ==");
+            method.setHeader("Content-Type", "text/plain");
+            method.setEntity(new StringEntity(data, Charset.forName("UTF-8")));
             HttpContext context = HttpClientContext.create();
             CloseableHttpResponse httpResponse = httpClient.execute(method, context);
             httpEntity = httpResponse.getEntity();
@@ -105,26 +109,13 @@ public class HttpClientPoolUtil {
             if (method != null) {
                 method.abort();
             }
-//            e.printStackTrace();
-//            logger.error("execute post request exception, url:" + uri + ", exception:" + e.toString()
-//                    + ", cost time(ms):" + (System.currentTimeMillis() - startTime));
-            new Exception("execute post request exception, url:"
-                    + uri + ", exception:" + e.toString() +
-                    ", cost time(ms):" + (System.currentTimeMillis() - startTime))
-                    .printStackTrace();
+            new Exception("execute post request exception, url:" + uri + ", exception:" + e.toString() + ", cost time(ms):" + (System.currentTimeMillis() - startTime)).printStackTrace();
         } finally {
             if (httpEntity != null) {
                 try {
                     EntityUtils.consumeQuietly(httpEntity);
                 } catch (Exception e) {
-//                    e.printStackTrace();
-//                    logger.error("close response exception, url:" + uri + ", exception:" + e.toString()
-//                            + ", cost time(ms):" + (System.currentTimeMillis() - startTime));
-                    new Exception(
-                            "close response exception, url:" + uri +
-                                    ", exception:" + e.toString()
-                                    + ", cost time(ms):" + (System.currentTimeMillis() - startTime))
-                            .printStackTrace();
+                    new Exception("close response exception, url:" + uri + ", exception:" + e.toString() + ", cost time(ms):" + (System.currentTimeMillis() - startTime)).printStackTrace();
                 }
             }
         }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/utils/SqlSyntaxValidator.java

@@ -15,14 +15,12 @@
 package com.taosdata.jdbc.utils;
 
 import com.taosdata.jdbc.TSDBConnection;
-import com.taosdata.jdbc.TSDBJNIConnector;
 
 import java.sql.Connection;
-import java.sql.SQLException;
 
 public class SqlSyntaxValidator {
 
-    private static final String[] updateSQL = {"insert", "update", "delete", "create", "alter", "drop", "show", "describe", "use"};
+    private static final String[] updateSQL = {"insert", "update", "delete", "create", "alter", "drop", "show", "describe", "use", "import"};
     private static final String[] querySQL = {"select"};
 
     private TSDBConnection tsdbConnection;
@@ -31,22 +29,6 @@ public class SqlSyntaxValidator {
         this.tsdbConnection = (TSDBConnection) connection;
     }
 
-    public boolean validateSqlSyntax(String sql) throws SQLException {
-
-        boolean res = false;
-        if (tsdbConnection == null || tsdbConnection.isClosed()) {
-            throw new SQLException("invalid connection");
-        } else {
-            TSDBJNIConnector jniConnector = tsdbConnection.getConnection();
-            if (jniConnector == null) {
-                throw new SQLException("jniConnector is null");
-            } else {
-                res = jniConnector.validateCreateTableSql(sql);
-            }
-        }
-        return res;
-    }
-
     public static boolean isValidForExecuteUpdate(String sql) {
         for (String prefix : updateSQL) {
             if (sql.trim().toLowerCase().startsWith(prefix))
@@ -56,18 +38,28 @@ public class SqlSyntaxValidator {
     }
 
     public static boolean isUseSql(String sql) {
-        return sql.trim().toLowerCase().startsWith(updateSQL[8]) || sql.trim().toLowerCase().matches("create\\s*database.*") || sql.toLowerCase().toLowerCase().matches("drop\\s*database.*");
+        return sql.trim().toLowerCase().startsWith("use") || sql.trim().toLowerCase().matches("create\\s*database.*") || sql.toLowerCase().toLowerCase().matches("drop\\s*database.*");
     }
 
-    public static boolean isUpdateSql(String sql) {
-        return sql.trim().toLowerCase().startsWith(updateSQL[1]);
+    public static boolean isShowSql(String sql) {
+        return sql.trim().toLowerCase().startsWith("show");
     }
 
+    public static boolean isDescribeSql(String sql) {
+        return sql.trim().toLowerCase().startsWith("describe");
+    }
+
+
     public static boolean isInsertSql(String sql) {
-        return sql.trim().toLowerCase().startsWith(updateSQL[0]);
+        return sql.trim().toLowerCase().startsWith("insert") || sql.trim().toLowerCase().startsWith("import");
     }
 
     public static boolean isSelectSql(String sql) {
-        return sql.trim().toLowerCase().startsWith(querySQL[0]);
+        return sql.trim().toLowerCase().startsWith("select");
+    }
+
+
+    public static boolean isShowDatabaseSql(String sql) {
+        return sql.trim().toLowerCase().matches("show\\s*databases");
     }
 }

src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulJDBCTest.java

@@ -1,5 +1,6 @@
 package com.taosdata.jdbc.rs;
 
+
 import org.junit.*;
 import org.junit.runners.MethodSorters;
 

src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/SQLTest.java

@@ -0,0 +1,399 @@
+package com.taosdata.jdbc.rs;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.FixMethodOrder;
+import org.junit.Test;
+import org.junit.runners.MethodSorters;
+
+import java.sql.*;
+
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class SQLTest {
+    private static final String host = "master";
+
+    private static Connection connection;
+
+    @Test
+    public void testCase001() {
+        String sql = "create database if not exists restful_test";
+        execute(sql);
+    }
+
+    @Test
+    public void testCase002() {
+        String sql = "use restful_test";
+        execute(sql);
+    }
+
+    @Test
+    public void testCase003() {
+        String sql = "show databases";
+        executeWithResult(sql);
+    }
+
+    @Test
+    public void testCase004() {
+        String sql = "show tables";
+        executeWithResult(sql);
+    }
+
+    @Test
+    public void testCase005() {
+        String sql = "show stables";
+        executeWithResult(sql);
+    }
+
+    @Test
+    public void testCase006() {
+        String sql = "show dnodes";
+        executeWithResult(sql);
+    }
+
+    @Test
+    public void testCase007() {
+        String sql = "show vgroups";
+        executeWithResult(sql);
+    }
+
+    @Test
+    public void testCase008() {
+        String sql = "drop table if exists restful_test.weather";
+        execute(sql);
+    }
+
+    @Test
+    public void testCase009() {
+        String sql = "create table if not exists restful_test.weather(ts timestamp, temperature float) tags(location nchar(64))";
+        execute(sql);
+    }
+
+    @Test
+    public void testCase010() {
+        String sql = "create table t1 using restful_test.weather tags('北京')";
+        execute(sql);
+    }
+
+    @Test
+    public void testCase011() {
+        String sql = "insert into restful_test.t1 values(now, 22.22)";
+        executeUpdate(sql);
+    }
+
+    @Test
+    public void testCase012() {
+        String sql = "insert into restful_test.t1 values('2020-01-01 00:00:00.000', 22.22)";
+        executeUpdate(sql);
+    }
+
+    @Test
+    public void testCase013() {
+        String sql = "insert into restful_test.t1 values('2020-01-01 00:01:00.000', 22.22),('2020-01-01 00:02:00.000', 22.22)";
+        executeUpdate(sql);
+    }
+
+    @Test
+    public void testCase014() {
+        String sql = "insert into restful_test.t2 using weather tags('上海') values('2020-01-01 00:03:00.000', 22.22)";
+        executeUpdate(sql);
+    }
+
+    @Test
+    public void testCase015() {
+        String sql = "insert into restful_test.t2 using weather tags('上海') values('2020-01-01 00:01:00.000', 22.22),('2020-01-01 00:02:00.000', 22.22)";
+        executeUpdate(sql);
+    }
+
+    @Test
+    public void testCase016() {
+        String sql = "insert into t1 values('2020-01-01 01:0:00.000', 22.22),('2020-01-01 02:00:00.000', 22.22) t2 values('2020-01-01 01:0:00.000', 33.33),('2020-01-01 02:00:00.000', 33.33)";
+        executeUpdate(sql);
+    }
+
+    @Test
+    public void testCase017() {
+        String sql = "Insert into t3 using weather tags('广东') values('2020-01-01 01:0:00.000', 22.22),('2020-01-01 02:00:00.000', 22.22) t4 using weather tags('天津') values('2020-01-01 01:0:00.000', 33.33),('2020-01-01 02:00:00.000', 33.33)";
+        executeUpdate(sql);
+    }
+
+    @Test
+    public void testCase018() {
+        String sql = "select * from restful_test.t1";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase019() {
+        String sql = "select * from restful_test.weather";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase020() {
+        String sql = "select ts, temperature from restful_test.t1";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase021() {
+        String sql = "select ts, temperature from restful_test.weather";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase022() {
+        String sql = "select temperature, ts from restful_test.t1";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase023() {
+        String sql = "select temperature, ts from restful_test.weather";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase024() {
+        String sql = "import into restful_test.t5 using weather tags('石家庄') values('2020-01-01 00:01:00.000', 22.22)";
+        executeUpdate(sql);
+    }
+
+    @Test
+    public void testCase025() {
+        String sql = "import into restful_test.t6 using weather tags('沈阳') values('2020-01-01 00:01:00.000', 22.22),('2020-01-01 00:02:00.000', 22.22)";
+        executeUpdate(sql);
+    }
+
+    @Test
+    public void testCase026() {
+        String sql = "import into restful_test.t7 using weather tags('长沙') values('2020-01-01 00:01:00.000', 22.22) restful_test.t8 using weather tags('吉林') values('2020-01-01 00:01:00.000', 22.22)";
+        executeUpdate(sql);
+    }
+
+    @Test
+    public void testCase027() {
+        String sql = "import into restful_test.t9 using weather tags('武汉') values('2020-01-01 00:01:00.000', 22.22) ,('2020-01-02 00:01:00.000', 22.22) restful_test.t10 using weather tags('哈尔滨') values('2020-01-01 00:01:00.000', 22.22),('2020-01-02 00:01:00.000', 22.22)";
+        executeUpdate(sql);
+    }
+
+    @Test
+    public void testCase028() {
+        String sql = "select location, temperature, ts from restful_test.weather where temperature > 1";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase029() {
+        String sql = "select location, temperature, ts from restful_test.weather where temperature < 1";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase030() {
+        String sql = "select location, temperature, ts from restful_test.weather where ts  > now";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase031() {
+        String sql = "select location, temperature, ts from restful_test.weather where ts  < now";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase032() {
+        String sql = "select count(*) from restful_test.weather";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase033() {
+        String sql = "select first(*) from restful_test.weather";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase034() {
+        String sql = "select last(*) from restful_test.weather";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase035() {
+        String sql = "select last_row(*) from restful_test.weather";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase036() {
+        String sql = "select ts, ts as primary_key from restful_test.weather";
+        executeQuery(sql);
+    }
+
+
+    @Test
+    public void testCase037() {
+        String sql = "select database()";
+        execute("use restful_test");
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase038() {
+        String sql = "select client_version()";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase039() {
+        String sql = "select server_status()";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase040() {
+        String sql = "select server_status() as status";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase041() {
+        String sql = "select tbname, location from restful_test.weather";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase042() {
+        String sql = "select count(tbname) from restful_test.weather";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase043() {
+        String sql = "select * from restful_test.weather where ts < now - 1h";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase044() {
+        String sql = "select * from restful_test.weather where ts < now - 1h and location like '%'";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase045() {
+        String sql = "select * from restful_test.weather where ts < now - 1h order by ts";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase046() {
+        String sql = "select last(*) from restful_test.weather where ts < now - 1h group by tbname order by tbname";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase047() {
+        String sql = "select * from restful_test.weather limit 2";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase048() {
+        String sql = "select * from restful_test.weather limit 2 offset 5";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase049() {
+        String sql = "select * from restful_test.t1, restful_test.t3 where t1.ts = t3.ts ";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase050() {
+        String sql = "select * from restful_test.t1, restful_test.t3 where t1.ts = t3.ts and t1.location = t3.location";
+        executeQuery(sql);
+    }
+
+    @Test
+    public void testCase051() {
+        String sql = "select * from restful_test.t1 tt, restful_test.t3 yy where tt.ts = yy.ts";
+        executeQuery(sql);
+    }
+
+    private void executeUpdate(String sql) {
+        try (Statement statement = connection.createStatement()) {
+            long start = System.currentTimeMillis();
+            int affectedRows = statement.executeUpdate(sql);
+            long end = System.currentTimeMillis();
+            System.out.println("[ affected rows : " + affectedRows + " ] time cost: " + (end - start) + " ms, execute statement ====> " + sql);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private void executeWithResult(String sql) {
+        try (Statement statement = connection.createStatement()) {
+            statement.execute(sql);
+            ResultSet resultSet = statement.getResultSet();
+            printResult(resultSet);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private void execute(String sql) {
+        try (Statement statement = connection.createStatement()) {
+            long start = System.currentTimeMillis();
+            boolean execute = statement.execute(sql);
+            long end = System.currentTimeMillis();
+            printSql(sql, execute, (end - start));
+        } catch (SQLException e) {
+            System.out.println("ERROR execute SQL ===> " + sql);
+            e.printStackTrace();
+        }
+    }
+
+    private static void printSql(String sql, boolean succeed, long cost) {
+        System.out.println("[ " + (succeed ? "OK" : "ERROR!") + " ] time cost: " + cost + " ms, execute statement ====> " + sql);
+    }
+
+    private void executeQuery(String sql) {
+        try (Statement statement = connection.createStatement()) {
+            long start = System.currentTimeMillis();
+            ResultSet resultSet = statement.executeQuery(sql);
+            long end = System.currentTimeMillis();
+            printSql(sql, true, (end - start));
+            printResult(resultSet);
+        } catch (SQLException e) {
+            System.out.println("ERROR execute SQL ===> " + sql);
+            e.printStackTrace();
+        }
+    }
+
+    private static void printResult(ResultSet resultSet) throws SQLException {
+        ResultSetMetaData metaData = resultSet.getMetaData();
+        while (resultSet.next()) {
+            StringBuilder sb = new StringBuilder();
+            for (int i = 1; i <= metaData.getColumnCount(); i++) {
+                String columnLabel = metaData.getColumnLabel(i);
+                String value = resultSet.getString(i);
+                sb.append(columnLabel + ": " + value + "\t");
+            }
+            System.out.println(sb.toString());
+        }
+    }
+
+    @BeforeClass
+    public static void before() throws ClassNotFoundException, SQLException {
+        Class.forName("com.taosdata.jdbc.rs.RestfulDriver");
+        connection = DriverManager.getConnection("jdbc:TAOS-RS://" + host + ":6041/restful_test?user=root&password=taosdata");
+    }
+
+    @AfterClass
+    public static void after() throws SQLException {
+        connection.close();
+    }
+
+}

src/dnode/src/dnodeMWrite.c

@@ -188,8 +188,8 @@ void dnodeReprocessMWriteMsg(void *pMsg) {
       ++pWrite->pBatchMasterMsg->received;
       if (pWrite->pBatchMasterMsg->successed + pWrite->pBatchMasterMsg->received
 	  >= pWrite->pBatchMasterMsg->expected) {
-	dnodeSendRedirectMsg(&pWrite->rpcMsg, true);
-	dnodeFreeMWriteMsg(pWrite);
+        dnodeSendRedirectMsg(&pWrite->pBatchMasterMsg->rpcMsg, true);
+        dnodeFreeMWriteMsg(pWrite->pBatchMasterMsg);
       }
 
       mnodeDestroySubMsg(pWrite);

src/dnode/src/dnodePeer.c

@@ -60,7 +60,7 @@ int32_t dnodeInitServer() {
   rpcInit.label        = "DND-S";
   rpcInit.numOfThreads = 1;
   rpcInit.cfp          = dnodeProcessReqMsgFromDnode;
-  rpcInit.sessions     = TSDB_MAX_VNODES;
+  rpcInit.sessions     = TSDB_MAX_VNODES << 4;
   rpcInit.connType     = TAOS_CONN_SERVER;
   rpcInit.idleTime     = tsShellActivityTimer * 1000;
 
@@ -123,7 +123,7 @@ int32_t dnodeInitClient() {
   rpcInit.label        = "DND-C";
   rpcInit.numOfThreads = 1;
   rpcInit.cfp          = dnodeProcessRspFromDnode;
-  rpcInit.sessions     = TSDB_MAX_VNODES;
+  rpcInit.sessions     = TSDB_MAX_VNODES << 4;
   rpcInit.connType     = TAOS_CONN_CLIENT;
   rpcInit.idleTime     = tsShellActivityTimer * 1000;
   rpcInit.user         = "t";

src/kit/taosdemox/query.json

@@ -6,12 +6,12 @@
   "user": "root",
   "password": "taosdata",
   "databases": "db01",
-  "super_table_query":
-    {"rate":1, "concurrent":1,
+  "specified_table_query":
+    {"query_interval":1, "concurrent":1,
      "sqls": [{"sql": "select count(*) from stb01", "result": "./query_res0.txt"}]
     },
-  "sub_table_query": 
-    {"stblname": "stb01", "rate":1, "threads":1,
+  "super_table_query": 
+    {"stblname": "stb01", "query_interval":1, "threads":1,
      "sqls": [{"sql": "select count(*) from xxxx", "result": "./query_res1.txt"}]
     }
 }

src/kit/taosdemox/taosdemox.c

@@ -1441,11 +1441,12 @@ static int getAllChildNameOfSuperTable(TAOS * taos, char* dbName, char* sTblName
     strncpy(pTblName, (char *)row[0], TSDB_TABLE_NAME_LEN);
     //printf("==== sub table name: %s\n", pTblName);
     count++;
-    if (count == childTblCount) {
-      char *tmp = realloc(childTblName, (size_t)count*1.5*TSDB_TABLE_NAME_LEN);
+    if (count >= childTblCount - 1) {
+      char *tmp = realloc(childTblName, (size_t)childTblCount*1.5*TSDB_TABLE_NAME_LEN+1);
       if (tmp != NULL) {
         childTblName = tmp;
-        memset(childTblName + count*TSDB_TABLE_NAME_LEN, 0, (size_t)(count*0.5*TSDB_TABLE_NAME_LEN));
+        childTblCount = (int)(childTblCount*1.5);
+        memset(childTblName + count*TSDB_TABLE_NAME_LEN, 0, (size_t)((childTblCount-count)*TSDB_TABLE_NAME_LEN));
       } else {
         // exit, if allocate more memory failed
         printf("realloc fail for save child table name of %s.%s\n", dbName, sTblName);
@@ -3960,7 +3961,11 @@ void *superQueryProcess(void *sarg) {
     for (int i = 0; i < g_queryInfo.superQueryInfo.sqlCount; i++) {
       if (0 == strncasecmp(g_queryInfo.queryMode, "taosc", 5)) {          
         int64_t t1 = taosGetTimestampUs();
-        selectAndGetResult(winfo->taos, g_queryInfo.superQueryInfo.sql[i], g_queryInfo.superQueryInfo.result[i]); 
+        char tmpFile[MAX_FILE_NAME_LEN*2] = {0};
+        if (g_queryInfo.superQueryInfo.result[i][0] != 0) {
+          sprintf(tmpFile, "%s-%d", g_queryInfo.superQueryInfo.result[i], winfo->threadID);
+        }
+        selectAndGetResult(winfo->taos, g_queryInfo.superQueryInfo.sql[i], tmpFile); 
         int64_t t2 = taosGetTimestampUs();          
         printf("taosc select sql return, Spent %f s\n", (t2 - t1)/1000000.0);          
       } else {
@@ -4019,7 +4024,11 @@ void *subQueryProcess(void *sarg) {
       for (int i = 0; i < g_queryInfo.subQueryInfo.sqlCount; i++) {
         memset(sqlstr,0,sizeof(sqlstr));
         replaceSubTblName(g_queryInfo.subQueryInfo.sql[i], sqlstr, i);
-        selectAndGetResult(winfo->taos, sqlstr, g_queryInfo.subQueryInfo.result[i]); 
+        char tmpFile[MAX_FILE_NAME_LEN*2] = {0};
+        if (g_queryInfo.subQueryInfo.result[i][0] != 0) {
+          sprintf(tmpFile, "%s-%d", g_queryInfo.subQueryInfo.result[i], winfo->threadID);
+        }
+        selectAndGetResult(winfo->taos, sqlstr, tmpFile); 
       }
     }
     et = taosGetTimestampMs();
@@ -4193,7 +4202,11 @@ void *subSubscribeProcess(void *sarg) {
       sprintf(topic, "taosdemo-subscribe-%d", i);
       memset(subSqlstr,0,sizeof(subSqlstr));
       replaceSubTblName(g_queryInfo.subQueryInfo.sql[i], subSqlstr, i);
-      g_queryInfo.subQueryInfo.tsub[i] = subscribeImpl(winfo->taos, subSqlstr, topic, g_queryInfo.subQueryInfo.result[i]); 
+      char tmpFile[MAX_FILE_NAME_LEN*2] = {0};
+      if (g_queryInfo.subQueryInfo.result[i][0] != 0) {
+        sprintf(tmpFile, "%s-%d", g_queryInfo.subQueryInfo.result[i], winfo->threadID);
+      }
+      g_queryInfo.subQueryInfo.tsub[i] = subscribeImpl(winfo->taos, subSqlstr, topic, tmpFile); 
       if (NULL == g_queryInfo.subQueryInfo.tsub[i]) {
         return NULL;
       }
@@ -4211,7 +4224,11 @@ void *subSubscribeProcess(void *sarg) {
       
       TAOS_RES* res = taos_consume(g_queryInfo.subQueryInfo.tsub[i]);
       if (res) {
-        getResult(res, g_queryInfo.subQueryInfo.result[i]);
+        char tmpFile[MAX_FILE_NAME_LEN*2] = {0};
+        if (g_queryInfo.subQueryInfo.result[i][0] != 0) {
+          sprintf(tmpFile, "%s-%d", g_queryInfo.subQueryInfo.result[i], winfo->threadID);
+        }
+        getResult(res, tmpFile);
         taos_free_result(res);
       }
     }
@@ -4244,7 +4261,11 @@ void *superSubscribeProcess(void *sarg) {
     char topic[32] = {0};
     for (int i = 0; i < g_queryInfo.superQueryInfo.sqlCount; i++) {
       sprintf(topic, "taosdemo-subscribe-%d", i);
-      g_queryInfo.superQueryInfo.tsub[i] = subscribeImpl(winfo->taos, g_queryInfo.superQueryInfo.sql[i], topic, g_queryInfo.superQueryInfo.result[i]); 
+      char tmpFile[MAX_FILE_NAME_LEN*2] = {0};
+      if (g_queryInfo.subQueryInfo.result[i][0] != 0) {
+        sprintf(tmpFile, "%s-%d", g_queryInfo.superQueryInfo.result[i], winfo->threadID);
+      }
+      g_queryInfo.superQueryInfo.tsub[i] = subscribeImpl(winfo->taos, g_queryInfo.superQueryInfo.sql[i], topic, tmpFile); 
       if (NULL == g_queryInfo.superQueryInfo.tsub[i]) {
         return NULL;
       }
@@ -4262,7 +4283,11 @@ void *superSubscribeProcess(void *sarg) {
       
       TAOS_RES* res = taos_consume(g_queryInfo.superQueryInfo.tsub[i]);
       if (res) {
-        getResult(res, g_queryInfo.superQueryInfo.result[i]);
+        char tmpFile[MAX_FILE_NAME_LEN*2] = {0};
+        if (g_queryInfo.superQueryInfo.result[i][0] != 0) {
+          sprintf(tmpFile, "%s-%d", g_queryInfo.superQueryInfo.result[i], winfo->threadID);
+        }
+        getResult(res, tmpFile);
         taos_free_result(res);
       }
     }

src/rpc/src/rpcMain.c

@@ -1567,6 +1567,7 @@ static int rpcCheckAuthentication(SRpcConn *pConn, char *msg, int msgLen) {
     // for response, if code is auth failure, it shall bypass the auth process
     code = htonl(pHead->code);
     if (code == TSDB_CODE_RPC_INVALID_TIME_STAMP || code == TSDB_CODE_RPC_AUTH_FAILURE ||
+        code == TSDB_CODE_RPC_INVALID_VERSION ||
         code == TSDB_CODE_RPC_AUTH_REQUIRED || code == TSDB_CODE_MND_INVALID_USER || code == TSDB_CODE_RPC_NOT_READY) {
       pHead->msgLen = (int32_t)htonl((uint32_t)pHead->msgLen);
       // tTrace("%s, dont check authentication since code is:0x%x", pConn->info, code);

tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/jdbcTaosdemo/JdbcTaosdemo.java

@@ -0,0 +1,352 @@
+package com.taosdata.example.jdbcTaosdemo;
+
+import com.taosdata.example.jdbcTaosdemo.domain.JdbcTaosdemoConfig;
+import com.taosdata.example.jdbcTaosdemo.task.CreateTableTask;
+import com.taosdata.example.jdbcTaosdemo.task.InsertTableDatetimeTask;
+import com.taosdata.example.jdbcTaosdemo.task.InsertTableTask;
+import com.taosdata.example.jdbcTaosdemo.utils.ConnectionFactory;
+import com.taosdata.example.jdbcTaosdemo.utils.SqlSpeller;
+import com.taosdata.example.jdbcTaosdemo.utils.TimeStampUtil;
+import org.apache.log4j.Logger;
+
+import java.sql.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class JdbcTaosdemo {
+
+    private static Logger logger = Logger.getLogger(JdbcTaosdemo.class);
+    private final JdbcTaosdemoConfig config;
+    private Connection connection;
+
+    public JdbcTaosdemo(JdbcTaosdemoConfig config) {
+        this.config = config;
+    }
+
+    public static void main(String[] args) {
+        // parse config from args
+        JdbcTaosdemoConfig config = new JdbcTaosdemoConfig(args);
+
+        boolean isHelp = Arrays.asList(args).contains("--help");
+        if (isHelp || config.host == null || config.host.isEmpty()) {
+            JdbcTaosdemoConfig.printHelp();
+            return;
+        }
+
+        JdbcTaosdemo taosdemo = new JdbcTaosdemo(config);
+        // establish connection
+        taosdemo.init();
+        // drop database
+        taosdemo.dropDatabase();
+        // create database
+        taosdemo.createDatabase();
+        // use db
+        taosdemo.useDatabase();
+        // create super table
+        taosdemo.createSuperTable();
+        // create sub tables
+        taosdemo.createTableMultiThreads();
+
+        boolean infinite = Arrays.asList(args).contains("--infinite");
+        if (infinite) {
+            logger.info("!!! Infinite Insert Mode Started. !!!");
+            taosdemo.insertInfinite();
+        } else {
+            // insert into table
+            taosdemo.insertMultiThreads();
+            // select from sub table
+            taosdemo.selectFromTableLimit();
+            taosdemo.selectCountFromTable();
+            taosdemo.selectAvgMinMaxFromTable();
+            // select last from
+            taosdemo.selectLastFromTable();
+            // select from super table
+            taosdemo.selectFromSuperTableLimit();
+            taosdemo.selectCountFromSuperTable();
+            taosdemo.selectAvgMinMaxFromSuperTable();
+            //select avg ,max from stb where tag
+            taosdemo.selectAvgMinMaxFromSuperTableWhereTag();
+            //select last from stb where location = ''
+            taosdemo.selectLastFromSuperTableWhere();
+            // select group by
+            taosdemo.selectGroupBy();
+            // select like
+            taosdemo.selectLike();
+            // select where ts >= ts<=
+            taosdemo.selectLastOneHour();
+            taosdemo.selectLastOneDay();
+            taosdemo.selectLastOneWeek();
+            taosdemo.selectLastOneMonth();
+            taosdemo.selectLastOneYear();
+
+            // drop super table
+            if (config.dropTable)
+                taosdemo.dropSuperTable();
+            taosdemo.close();
+        }
+    }
+
+
+    /**
+     * establish the connection
+     */
+    private void init() {
+        try {
+            Class.forName("com.taosdata.jdbc.TSDBDriver");
+            connection = ConnectionFactory.build(config);
+            if (connection != null)
+                logger.info("[ OK ] Connection established.");
+        } catch (ClassNotFoundException | SQLException e) {
+            logger.error(e.getMessage());
+            throw new RuntimeException("connection failed: " + config.host);
+        }
+    }
+
+    /**
+     * create database
+     */
+    private void createDatabase() {
+        String sql = SqlSpeller.createDatabaseSQL(config.database, config.keep, config.days);
+        execute(sql);
+    }
+
+    /**
+     * drop database
+     */
+    private void dropDatabase() {
+        String sql = SqlSpeller.dropDatabaseSQL(config.database);
+        execute(sql);
+    }
+
+    /**
+     * use database
+     */
+    private void useDatabase() {
+        String sql = SqlSpeller.useDatabaseSQL(config.database);
+        execute(sql);
+    }
+
+    /**
+     * create super table
+     */
+    private void createSuperTable() {
+        String sql = SqlSpeller.createSuperTableSQL(config.superTable);
+        execute(sql);
+    }
+
+    /**
+     * create table use super table with multi threads
+     */
+    private void createTableMultiThreads() {
+        try {
+            final int tableSize = (int) (config.numOfTables / config.numOfThreadsForCreate);
+            List<Thread> threads = new ArrayList<>();
+            for (int i = 0; i < config.numOfThreadsForCreate; i++) {
+                Thread thread = new Thread(new CreateTableTask(config, i * tableSize, tableSize), "Thread-" + i);
+                threads.add(thread);
+                thread.start();
+            }
+            for (Thread thread : threads) {
+                thread.join();
+            }
+            logger.info("<<< Multi Threads create table finished.");
+        } catch (InterruptedException e) {
+            logger.error(e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * insert data infinitely
+     */
+    private void insertInfinite() {
+        try {
+            final long startDatetime = TimeStampUtil.datetimeToLong("2005-01-01 00:00:00.000");
+            final long finishDatetime = TimeStampUtil.datetimeToLong("2030-01-01 00:00:00.000");
+
+            final int tableSize = (int) (config.numOfTables / config.numOfThreadsForInsert);
+            List<Thread> threads = new ArrayList<>();
+            for (int i = 0; i < config.numOfThreadsForInsert; i++) {
+                Thread thread = new Thread(new InsertTableDatetimeTask(config, i * tableSize, tableSize, startDatetime, finishDatetime), "Thread-" + i);
+                threads.add(thread);
+                thread.start();
+            }
+            for (Thread thread : threads) {
+                thread.join();
+            }
+            logger.info("<<< Multi Threads insert table finished.");
+        } catch (InterruptedException e) {
+            logger.error(e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    private void insertMultiThreads() {
+        try {
+            final int tableSize = (int) (config.numOfTables / config.numOfThreadsForInsert);
+            final int numberOfRecordsPerTable = (int) config.numOfRowsPerTable;
+            List<Thread> threads = new ArrayList<>();
+            for (int i = 0; i < config.numOfThreadsForInsert; i++) {
+                Thread thread = new Thread(new InsertTableTask(config, i * tableSize, tableSize, numberOfRecordsPerTable), "Thread-" + i);
+                threads.add(thread);
+                thread.start();
+            }
+            for (Thread thread : threads) {
+                thread.join();
+            }
+            logger.info("<<< Multi Threads insert table finished.");
+        } catch (InterruptedException e) {
+            logger.error(e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    private void selectFromTableLimit() {
+        String sql = SqlSpeller.selectFromTableLimitSQL(config.database, config.prefixOfTable, 1, 10, 0);
+        executeQuery(sql);
+    }
+
+    private void selectCountFromTable() {
+        String sql = SqlSpeller.selectCountFromTableSQL(config.database, config.prefixOfTable, 1);
+        executeQuery(sql);
+    }
+
+    private void selectAvgMinMaxFromTable() {
+        String sql = SqlSpeller.selectAvgMinMaxFromTableSQL("current", config.database, config.prefixOfTable, 1);
+        executeQuery(sql);
+    }
+
+    private void selectLastFromTable() {
+        String sql = SqlSpeller.selectLastFromTableSQL(config.database, config.prefixOfTable, 1);
+        executeQuery(sql);
+    }
+
+    private void selectFromSuperTableLimit() {
+        String sql = SqlSpeller.selectFromSuperTableLimitSQL(config.database, config.superTable, 10, 0);
+        executeQuery(sql);
+    }
+
+    private void selectCountFromSuperTable() {
+        String sql = SqlSpeller.selectCountFromSuperTableSQL(config.database, config.superTable);
+        executeQuery(sql);
+    }
+
+    private void selectAvgMinMaxFromSuperTable() {
+        String sql = SqlSpeller.selectAvgMinMaxFromSuperTableSQL("current", config.database, config.superTable);
+        executeQuery(sql);
+    }
+
+    private void selectAvgMinMaxFromSuperTableWhereTag() {
+        String sql = SqlSpeller.selectAvgMinMaxFromSuperTableWhere("current", config.database, config.superTable);
+        executeQuery(sql);
+    }
+
+    private void selectLastFromSuperTableWhere() {
+        String sql = SqlSpeller.selectLastFromSuperTableWhere("current", config.database, config.superTable);
+        executeQuery(sql);
+    }
+
+    private void selectGroupBy() {
+        String sql = SqlSpeller.selectGroupBy("current", config.database, config.superTable);
+        executeQuery(sql);
+    }
+
+    private void selectLike() {
+        String sql = SqlSpeller.selectLike(config.database, config.superTable);
+        executeQuery(sql);
+    }
+
+    private void selectLastOneHour() {
+        String sql = SqlSpeller.selectLastOneHour(config.database, config.superTable);
+        executeQuery(sql);
+    }
+
+    private void selectLastOneDay() {
+        String sql = SqlSpeller.selectLastOneDay(config.database, config.superTable);
+        executeQuery(sql);
+    }
+
+    private void selectLastOneWeek() {
+        String sql = SqlSpeller.selectLastOneWeek(config.database, config.superTable);
+        executeQuery(sql);
+    }
+
+    private void selectLastOneMonth() {
+        String sql = SqlSpeller.selectLastOneMonth(config.database, config.superTable);
+        executeQuery(sql);
+    }
+
+    private void selectLastOneYear() {
+        String sql = SqlSpeller.selectLastOneYear(config.database, config.superTable);
+        executeQuery(sql);
+    }
+
+    private void close() {
+        try {
+            if (connection != null) {
+                this.connection.close();
+                logger.info("connection closed.");
+            }
+        } catch (SQLException e) {
+            logger.error(e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * drop super table
+     */
+    private void dropSuperTable() {
+        String sql = SqlSpeller.dropSuperTableSQL(config.database, config.superTable);
+        execute(sql);
+    }
+
+    /**
+     * execute sql, use this method when sql is create, alter, drop..
+     */
+    private void execute(String sql) {
+        try (Statement statement = connection.createStatement()) {
+            long start = System.currentTimeMillis();
+            boolean execute = statement.execute(sql);
+            long end = System.currentTimeMillis();
+            printSql(sql, execute, (end - start));
+        } catch (SQLException e) {
+            logger.error("ERROR execute SQL ===> " + sql);
+            logger.error(e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    private static void printSql(String sql, boolean succeed, long cost) {
+        System.out.println("[ " + (succeed ? "OK" : "ERROR!") + " ] time cost: " + cost + " ms, execute statement ====> " + sql);
+    }
+
+    private void executeQuery(String sql) {
+        try (Statement statement = connection.createStatement()) {
+            long start = System.currentTimeMillis();
+            ResultSet resultSet = statement.executeQuery(sql);
+            long end = System.currentTimeMillis();
+            printSql(sql, true, (end - start));
+            printResult(resultSet);
+        } catch (SQLException e) {
+            logger.error("ERROR execute SQL ===> " + sql);
+            logger.error(e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    private static void printResult(ResultSet resultSet) throws SQLException {
+        ResultSetMetaData metaData = resultSet.getMetaData();
+        while (resultSet.next()) {
+            StringBuilder sb = new StringBuilder();
+            for (int i = 1; i <= metaData.getColumnCount(); i++) {
+                String columnLabel = metaData.getColumnLabel(i);
+                String value = resultSet.getString(i);
+                sb.append(columnLabel + ": " + value + "\t");
+            }
+            System.out.println(sb.toString());
+        }
+    }
+
+}

tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/jdbcTaosdemo/domain/JdbcTaosdemoConfig.java

@@ -1,4 +1,6 @@
-package com.taosdata.taosdemo.utils;
+package com.taosdata.example.jdbcTaosdemo.domain;
+
+import com.taosdata.example.jdbcTaosdemo.utils.TimeStampUtil;
 
 public final class JdbcTaosdemoConfig {
     // instance
@@ -20,19 +22,19 @@ public final class JdbcTaosdemoConfig {
     public int numOfTags;
     public String superTableSQL;
     //sub table
-    public String tablePrefix = "t";
-    public int numOfTables = 100;
-    public int numOfThreadsForCreate = 1;
+    public String prefixOfTable = "t";
     // insert task
-    public boolean autoCreateTable;
-    public int numOfRowsPerTable = 100;
-    public int numOfThreadsForInsert = 1;
+    public boolean autoCreateTable = true;
+    public long numOfTables = 100;
+    public long numOfRowsPerTable = 100;
     public int numOfTablesPerSQL = 10;
     public int numOfValuesPerSQL = 10;
+    public int numOfThreadsForCreate = 1;
+    public int numOfThreadsForInsert = 1;
     public long startTime;
-    public long timeGap;
-    public int sleep = 0;
-    public int order = 0;
+    public long timeGap = 1;
+    public int frequency;
+    public int order;
     public int rate = 10;
     public long range = 1000l;
     // select task
@@ -63,7 +65,7 @@ public final class JdbcTaosdemoConfig {
                 "                            Default is 'create table weather(ts timestamp, temperature float, humidity int) tags(location nchar(64), groupId int). \n" +
                 "                            if you use this parameter, the numOfFields and numOfTags will be invalid'");
         // sub table
-        System.out.println("-tablePrefix                The prefix of sub tables. Default is 't'");
+        System.out.println("-prefixOfTable              The prefix of sub tables. Default is 't'");
         System.out.println("-numOfTables                The number of tables. Default is 1");
         System.out.println("-numOfThreadsForCreate      The number of thread during create sub table. Default is 1");
         // insert task
@@ -74,11 +76,10 @@ public final class JdbcTaosdemoConfig {
         System.out.println("-numOfValuesPerSQL          The number of value per SQL. Default is 1");
         System.out.println("-startTime                  start time for insert task, The format is \"yyyy-MM-dd HH:mm:ss.SSS\".");
         System.out.println("-timeGap                    the number of time gap. Default is 1000 ms");
-        System.out.println("-sleep                      The number of milliseconds for sleep after each insert. default is 0");
+        System.out.println("-frequency                  the number of records per second inserted into one table. default is 0, do not control frequency");
         System.out.println("-order                      Insert mode--0: In order, 1: Out of order. Default is in order");
         System.out.println("-rate                       The proportion of data out of order. effective only if order is 1. min 0, max 100, default is 10");
         System.out.println("-range                      The range of data out of order. effective only if order is 1. default is 1000 ms");
-
         // query task
 //        System.out.println("-sqlFile                   The select sql file");
         // drop task
@@ -143,11 +144,11 @@ public final class JdbcTaosdemoConfig {
                 superTableSQL = args[++i];
             }
             // sub table
-            if ("-tablePrefix".equals(args[i]) && i < args.length - 1) {
-                tablePrefix = args[++i];
+            if ("-prefixOfTable".equals(args[i]) && i < args.length - 1) {
+                prefixOfTable = args[++i];
             }
             if ("-numOfTables".equals(args[i]) && i < args.length - 1) {
-                numOfTables = Integer.parseInt(args[++i]);
+                numOfTables = Long.parseLong(args[++i]);
             }
             if ("-autoCreateTable".equals(args[i]) && i < args.length - 1) {
                 autoCreateTable = Boolean.parseBoolean(args[++i]);
@@ -157,7 +158,7 @@ public final class JdbcTaosdemoConfig {
             }
             // insert task
             if ("-numOfRowsPerTable".equals(args[i]) && i < args.length - 1) {
-                numOfRowsPerTable = Integer.parseInt(args[++i]);
+                numOfRowsPerTable = Long.parseLong(args[++i]);
             }
             if ("-numOfThreadsForInsert".equals(args[i]) && i < args.length - 1) {
                 numOfThreadsForInsert = Integer.parseInt(args[++i]);
@@ -174,8 +175,8 @@ public final class JdbcTaosdemoConfig {
             if ("-timeGap".equals(args[i]) && i < args.length - 1) {
                 timeGap = Long.parseLong(args[++i]);
             }
-            if ("-sleep".equals(args[i]) && i < args.length - 1) {
-                sleep = Integer.parseInt(args[++i]);
+            if ("-frequency".equals(args[i]) && i < args.length - 1) {
+                frequency = Integer.parseInt(args[++i]);
             }
             if ("-order".equals(args[i]) && i < args.length - 1) {
                 order = Integer.parseInt(args[++i]);

tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/jdbcTaosdemo/task/CreateTableTask.java

@@ -0,0 +1,42 @@
+package com.taosdata.example.jdbcTaosdemo.task;
+
+import com.taosdata.example.jdbcTaosdemo.domain.JdbcTaosdemoConfig;
+import com.taosdata.example.jdbcTaosdemo.utils.ConnectionFactory;
+import com.taosdata.example.jdbcTaosdemo.utils.SqlSpeller;
+import org.apache.log4j.Logger;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+public class CreateTableTask implements Runnable {
+
+    private static Logger logger = Logger.getLogger(CreateTableTask.class);
+    private final JdbcTaosdemoConfig config;
+    private final int startIndex;
+    private final int tableNumber;
+
+    public CreateTableTask(JdbcTaosdemoConfig config, int startIndex, int tableNumber) {
+        this.config = config;
+        this.startIndex = startIndex;
+        this.tableNumber = tableNumber;
+    }
+
+    @Override
+    public void run() {
+        try {
+            Connection connection = ConnectionFactory.build(config);
+            for (int i = startIndex; i < startIndex + tableNumber; i++) {
+                Statement statement = connection.createStatement();
+                String sql = SqlSpeller.createTableSQL(i + 1, config.database, config.superTable);
+                statement.execute(sql);
+                statement.close();
+                logger.info(">>> " + sql);
+            }
+            connection.close();
+        } catch (SQLException e) {
+            logger.error(e.getMessage());
+            e.printStackTrace();
+        }
+    }
+}

tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/jdbcTaosdemo/task/InsertTableDatetimeTask.java

@@ -0,0 +1,49 @@
+package com.taosdata.example.jdbcTaosdemo.task;
+
+import com.taosdata.example.jdbcTaosdemo.domain.JdbcTaosdemoConfig;
+import com.taosdata.example.jdbcTaosdemo.utils.ConnectionFactory;
+import com.taosdata.example.jdbcTaosdemo.utils.SqlSpeller;
+import org.apache.log4j.Logger;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+public class InsertTableDatetimeTask implements Runnable {
+    private static Logger logger = Logger.getLogger(InsertTableDatetimeTask.class);
+
+    private final JdbcTaosdemoConfig config;
+    private final int startTableIndex;
+    private final int tableNumber;
+    private final long startDatetime;
+    private final long finishedDatetime;
+
+    public InsertTableDatetimeTask(JdbcTaosdemoConfig config, int startTableIndex, int tableNumber, long startDatetime, long finishedDatetime) {
+        this.config = config;
+        this.startTableIndex = startTableIndex;
+        this.tableNumber = tableNumber;
+        this.startDatetime = startDatetime;
+        this.finishedDatetime = finishedDatetime;
+    }
+
+    @Override
+    public void run() {
+        try {
+            Connection connection = ConnectionFactory.build(config);
+            int valuesCount = config.numOfValuesPerSQL;
+            for (long ts = startDatetime; ts < finishedDatetime; ts += valuesCount) {
+                for (int i = startTableIndex; i < startTableIndex + tableNumber; i++) {
+                    String sql = SqlSpeller.insertBatchSizeRowsSQL(config.database, config.prefixOfTable, i + 1, ts, valuesCount);
+                    Statement statement = connection.createStatement();
+                    statement.execute(sql);
+                    statement.close();
+                    logger.info(Thread.currentThread().getName() + ">>> " + sql);
+                }
+            }
+            connection.close();
+        } catch (SQLException e) {
+            logger.error(e.getMessage());
+            e.printStackTrace();
+        }
+    }
+}

tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/jdbcTaosdemo/task/InsertTableTask.java

@@ -0,0 +1,57 @@
+package com.taosdata.example.jdbcTaosdemo.task;
+
+import com.taosdata.example.jdbcTaosdemo.domain.JdbcTaosdemoConfig;
+import com.taosdata.example.jdbcTaosdemo.utils.ConnectionFactory;
+import com.taosdata.example.jdbcTaosdemo.utils.SqlSpeller;
+import org.apache.log4j.Logger;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.time.Duration;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+
+public class InsertTableTask implements Runnable {
+    private static final Logger logger = Logger.getLogger(InsertTableTask.class);
+
+    private final JdbcTaosdemoConfig config;
+    private final int startTbIndex;
+    private final int tableNumber;
+    private final int recordsNumberPerTable;
+
+    public InsertTableTask(JdbcTaosdemoConfig config, int startTbIndex, int tableNumber, int recordsNumberPerTable) {
+        this.config = config;
+        this.startTbIndex = startTbIndex;
+        this.tableNumber = tableNumber;
+        this.recordsNumberPerTable = recordsNumberPerTable;
+    }
+
+    @Override
+    public void run() {
+        try {
+            Connection connection = ConnectionFactory.build(config);
+            int keep = config.keep;
+            Instant end = Instant.now();
+            Instant start = end.minus(Duration.ofDays(keep - 1));
+            long timeGap = ChronoUnit.MILLIS.between(start, end) / (recordsNumberPerTable - 1);
+
+            // iterate insert
+            for (int j = 0; j < recordsNumberPerTable; j++) {
+                long ts = start.toEpochMilli() + (j * timeGap);
+                // insert data into echo table
+                for (int i = startTbIndex; i < startTbIndex + tableNumber; i++) {
+                    String sql = SqlSpeller.insertBatchSizeRowsSQL(config.database, config.prefixOfTable, i + 1, ts, config.numOfValuesPerSQL);
+                    logger.info(Thread.currentThread().getName() + ">>> " + sql);
+                    Statement statement = connection.createStatement();
+                    statement.execute(sql);
+                    statement.close();
+                }
+            }
+            connection.close();
+        } catch (SQLException e) {
+            logger.error(e.getMessage());
+            e.printStackTrace();
+        }
+    }
+}

tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/jdbcTaosdemo/utils/ConnectionFactory.java

@@ -0,0 +1,32 @@
+package com.taosdata.example.jdbcTaosdemo.utils;
+
+import com.taosdata.example.jdbcTaosdemo.domain.JdbcTaosdemoConfig;
+import com.taosdata.jdbc.TSDBDriver;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.util.Properties;
+
+public class ConnectionFactory {
+
+    public static Connection build(JdbcTaosdemoConfig config) throws SQLException {
+        return build(config.host, config.port, config.database, config.user, config.password);
+    }
+
+    public static Connection build(String host, int port, String dbName) throws SQLException {
+        return build(host, port, dbName, "root", "taosdata");
+    }
+
+    private static Connection build(String host, int port, String dbName, String user, String password) throws SQLException {
+        Properties properties = new Properties();
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER, user);
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD, password);
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
+        return DriverManager.getConnection("jdbc:TAOS://" + host + ":" + port + "/" + dbName + "", properties);
+    }
+
+
+}

tests/examples/JDBC/connectionPools/src/main/java/com/taosdata/demo/ConnectionPoolDemo.java

@@ -82,12 +82,27 @@ public class ConnectionPoolDemo {
 
         init(dataSource);
 
-        ExecutorService executor = Executors.newFixedThreadPool(threadCount);
-        while (true) {
-            executor.execute(new InsertTask(dataSource, dbName, tableSize, batchSize));
-            if (sleep > 0)
-                TimeUnit.MILLISECONDS.sleep(sleep);
+        try {
+            Connection connection = dataSource.getConnection();
+            Statement statement = connection.createStatement();
+            String sql = "insert into " + dbName + ".t_1 values('2020-01-01 00:00:00.000',12.12,111)";
+            int affectRows = statement.executeUpdate(sql);
+            System.out.println("affectRows >>> " + affectRows);
+            affectRows = statement.executeUpdate(sql);
+            System.out.println("affectRows >>> " + affectRows);
+            statement.close();
+            connection.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
         }
+
+
+//        ExecutorService executor = Executors.newFixedThreadPool(threadCount);
+//        while (true) {
+//            executor.execute(new InsertTask(dataSource, dbName, tableSize, batchSize));
+//            if (sleep > 0)
+//                TimeUnit.MILLISECONDS.sleep(sleep);
+//        }
     }
 
     private static void init(DataSource dataSource) {

tests/examples/JDBC/springbootdemo/src/main/java/com/taosdata/jdbc/springbootdemo/SpringbootdemoApplication.java

@@ -6,7 +6,7 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @MapperScan(basePackages = {"com.taosdata.jdbc.springbootdemo.dao"})
 @SpringBootApplication
-public class SpringbootdemoApplication {
+public class cd {
 
     public static void main(String[] args) {
         SpringApplication.run(SpringbootdemoApplication.class, args);

tests/examples/JDBC/taosdemo/pom.xml

@@ -2,41 +2,87 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.4.0</version>
-        <relativePath/> <!-- lookup parent from repository -->
-    </parent>
     <groupId>com.taosdata</groupId>
     <artifactId>taosdemo</artifactId>
     <version>2.0</version>
     <name>taosdemo</name>
+    <packaging>jar</packaging>
     <description>Demo project for TDengine</description>
 
     <properties>
-        <java.version>1.8</java.version>
+        <spring.version>5.3.2</spring.version>
     </properties>
 
     <dependencies>
+        <!-- spring -->
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-core</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-beans</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-expression</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-aop</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-aspects</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <version>${spring.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-jdbc</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
 
+        <!-- HikariCP -->
+        <dependency>
+            <groupId>com.zaxxer</groupId>
+            <artifactId>HikariCP</artifactId>
+            <version>3.4.5</version>
+        </dependency>
         <!-- taos jdbc -->
         <dependency>
             <groupId>com.taosdata.jdbc</groupId>
             <artifactId>taos-jdbcdriver</artifactId>
-            <version>2.0.14</version>
+            <version>2.0.15</version>
+            <scope>system</scope>
+            <systemPath>${project.basedir}/src/main/resources/lib/taos-jdbcdriver-2.0.15-dist.jar</systemPath>
         </dependency>
-        <!-- mysql -->
+        <!-- fastjson -->
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+            <version>1.2.75</version>
+        </dependency>
+        <!-- mysql: just for test -->
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
             <version>5.1.47</version>
-        </dependency>
-        <!-- mybatis-plus -->
-        <dependency>
-            <groupId>com.baomidou</groupId>
-            <artifactId>mybatis-plus-boot-starter</artifactId>
-            <version>3.1.2</version>
+            <scope>test</scope>
         </dependency>
         <!-- log4j -->
         <dependency>
@@ -44,46 +90,19 @@
             <artifactId>log4j</artifactId>
             <version>1.2.17</version>
         </dependency>
-
-        <!-- springboot -->
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-jdbc</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-thymeleaf</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-web</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.mybatis.spring.boot</groupId>
-            <artifactId>mybatis-spring-boot-starter</artifactId>
-            <version>2.1.4</version>
-        </dependency>
+        <!-- junit -->
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <version>4.12</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-devtools</artifactId>
-            <scope>runtime</scope>
-            <optional>true</optional>
-        </dependency>
+        <!-- lombok -->
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
-            <optional>true</optional>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <scope>test</scope>
+            <version>1.18.16</version>
+            <scope>provided</scope>
         </dependency>
     </dependencies>
 
@@ -94,6 +113,7 @@
                 <includes>
                     <include>**/*.properties</include>
                     <include>**/*.xml</include>
+                    <include>**/*.jar</include>
                 </includes>
                 <filtering>true</filtering>
             </resource>
@@ -108,10 +128,41 @@
 
         <plugins>
             <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <version>3.1.0</version>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <!-- 指定JdbcChecker为mainClass -->
+                            <mainClass>com.taosdata.taosdemo.TaosDemoApplication</mainClass>
+                        </manifest>
+                    </archive>
+                    <descriptorRefs>
+                        <descriptorRef>jar-with-dependencies</descriptorRef>
+                    </descriptorRefs>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>make-assembly</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                    </execution>
+                </executions>
             </plugin>
         </plugins>
+
     </build>
 
 </project>

tests/examples/JDBC/taosdemo/readme.md

@@ -0,0 +1,3 @@
+需求：
+1. 可以读lowa的配置文件
+2. 支持对JNI方式和Restful方式的taos-driver

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/TaosDemoApplication.java

@@ -0,0 +1,112 @@
+package com.taosdata.taosdemo;
+
+import com.taosdata.taosdemo.components.DataSourceFactory;
+import com.taosdata.taosdemo.components.JdbcTaosdemoConfig;
+import com.taosdata.taosdemo.domain.SuperTableMeta;
+import com.taosdata.taosdemo.service.DatabaseService;
+import com.taosdata.taosdemo.service.SubTableService;
+import com.taosdata.taosdemo.service.SuperTableService;
+import com.taosdata.taosdemo.service.data.SuperTableMetaGenerator;
+import org.apache.log4j.Logger;
+
+import javax.sql.DataSource;
+import java.io.IOException;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+
+public class TaosDemoApplication {
+
+    private static Logger logger = Logger.getLogger(TaosDemoApplication.class);
+
+    public static void main(String[] args) throws IOException {
+        // 读配置参数
+        JdbcTaosdemoConfig config = new JdbcTaosdemoConfig(args);
+        boolean isHelp = Arrays.asList(args).contains("--help");
+        if (isHelp || config.host == null || config.host.isEmpty()) {
+//        if (isHelp) {
+            JdbcTaosdemoConfig.printHelp();
+            System.exit(0);
+        }
+        // 初始化
+        final DataSource dataSource = DataSourceFactory.getInstance(config.host, config.port, config.user, config.password);
+        final DatabaseService databaseService = new DatabaseService(dataSource);
+        final SuperTableService superTableService = new SuperTableService(dataSource);
+        final SubTableService subTableService = new SubTableService(dataSource);
+        // 创建数据库
+        long start = System.currentTimeMillis();
+        Map<String, String> databaseParam = new HashMap<>();
+        databaseParam.put("database", config.database);
+        databaseParam.put("keep", Integer.toString(config.keep));
+        databaseParam.put("days", Integer.toString(config.days));
+        databaseParam.put("replica", Integer.toString(config.replica));
+        //TODO: other database parameters
+        databaseService.createDatabase(databaseParam);
+        databaseService.useDatabase(config.database);
+        long end = System.currentTimeMillis();
+        logger.info(">>> create database time cost : " + (end - start) + " ms.");
+        /**********************************************************************************/
+        // 构造超级表的meta
+        SuperTableMeta superTableMeta;
+        // create super table
+        if (config.superTableSQL != null) {
+            // use a sql to create super table
+            superTableMeta = SuperTableMetaGenerator.generate(config.superTableSQL);
+            if (config.database != null && !config.database.isEmpty())
+                superTableMeta.setDatabase(config.database);
+        } else if (config.numOfFields == 0) {
+            String sql = "create table " + config.database + "." + config.superTable + " (ts timestamp, temperature float, humidity int) tags(location nchar(64), groupId int)";
+            superTableMeta = SuperTableMetaGenerator.generate(sql);
+        } else {
+            // create super table with specified field size and tag size
+            superTableMeta = SuperTableMetaGenerator.generate(config.database, config.superTable, config.numOfFields, config.prefixOfFields, config.numOfTags, config.prefixOfTags);
+        }
+        /**********************************************************************************/
+        // 建表
+        start = System.currentTimeMillis();
+        if (config.doCreateTable) {
+            superTableService.drop(superTableMeta.getDatabase(), superTableMeta.getName());
+            superTableService.create(superTableMeta);
+            if (!config.autoCreateTable) {
+                // 批量建子表
+                subTableService.createSubTable(superTableMeta, config.numOfTables, config.prefixOfTable, config.numOfThreadsForCreate);
+            }
+        }
+        end = System.currentTimeMillis();
+        logger.error(">>> create table time cost : " + (end - start) + " ms.");
+        /**********************************************************************************/
+        // 插入
+        long tableSize = config.numOfTables;
+        int threadSize = config.numOfThreadsForInsert;
+        long startTime = getProperStartTime(config.startTime, config.keep);
+
+        if (tableSize < threadSize)
+            threadSize = (int) tableSize;
+        long gap = (long) Math.ceil((0.0d + tableSize) / threadSize);
+
+        start = System.currentTimeMillis();
+        // multi threads to insert
+        int affectedRows = subTableService.insertMultiThreads(superTableMeta, threadSize, tableSize, startTime, gap, config);
+        end = System.currentTimeMillis();
+        logger.error("insert " + affectedRows + " rows, time cost: " + (end - start) + " ms");
+        /**********************************************************************************/
+        // 删除表
+        if (config.dropTable) {
+            superTableService.drop(config.database, config.superTable);
+        }
+        System.exit(0);
+    }
+
+    private static long getProperStartTime(long startTime, int keep) {
+        Instant now = Instant.now();
+        long earliest = now.minus(Duration.ofDays(keep - 1)).toEpochMilli();
+        if (startTime == 0 || startTime < earliest) {
+            startTime = earliest;
+        }
+        return startTime;
+    }
+
+
+}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/TaosdemoApplication.java

@@ -1,15 +0,0 @@
-package com.taosdata.taosdemo;
-
-import org.mybatis.spring.annotation.MapperScan;
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-
-@MapperScan(basePackages = {"com.taosdata.taosdemo.mapper"})
-@SpringBootApplication
-public class TaosdemoApplication {
-
-    public static void main(String[] args) {
-        SpringApplication.run(TaosdemoApplication.class, args);
-    }
-
-}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/components/DataSourceFactory.java

@@ -0,0 +1,63 @@
+package com.taosdata.taosdemo.components;
+
+import com.zaxxer.hikari.HikariConfig;
+import com.zaxxer.hikari.HikariDataSource;
+import org.springframework.stereotype.Component;
+
+import javax.sql.DataSource;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
+@Component
+public class DataSourceFactory {
+
+    private static DataSource instance;
+
+    public static DataSource getInstance(String host, int port, String user, String password) throws IOException {
+        if (instance == null) {
+            synchronized (DataSourceFactory.class) {
+                if (instance == null) {
+                    InputStream is = DataSourceFactory.class.getClassLoader().getResourceAsStream("application.properties");
+                    Properties properties = new Properties();
+                    properties.load(is);
+
+                    HikariConfig config = new HikariConfig();
+
+                    if (properties.containsKey("jdbc.driver")) {
+//                        String driverName = properties.getProperty("jdbc.driver");
+//                        System.out.println(">>> load driver : " + driverName);
+//                        try {
+//                            Class.forName(driverName);
+//                        } catch (ClassNotFoundException e) {
+//                            e.printStackTrace();
+//                        }
+                        config.setDriverClassName(properties.getProperty("jdbc.driver"));
+                    } else {
+                        config.setDriverClassName("com.taosdata.jdbc.TSDBDriver");
+                    }
+                    if ("com.taosdata.jdbc.rs.RestfulDriver".equalsIgnoreCase(properties.getProperty("jdbc.driver")))
+                        config.setJdbcUrl("jdbc:TAOS-RS://" + host + ":6041/?charset=UTF-8&locale=en_US.UTF-8&timezone=UTC-8");
+                    else
+                        config.setJdbcUrl("jdbc:TAOS://" + host + ":" + port + "/?charset=UTF-8&locale=en_US.UTF-8&timezone=UTC-8");
+                    config.setUsername(user);
+                    config.setPassword(password);
+                    // maximum-pool-size
+                    if (properties.containsKey("hikari.maximum-pool-size"))
+                        config.setMaximumPoolSize(Integer.parseInt(properties.getProperty("hikari.maximum-pool-size")));
+                    else
+                        config.setMaximumPoolSize(500);
+                    // minimum-idle
+                    if (properties.containsKey("hikari.minimum-idle"))
+                        config.setMinimumIdle(Integer.parseInt(properties.getProperty("hikari.minimum-idle")));
+                    else
+                        config.setMinimumIdle(100);
+                    config.setMaxLifetime(0);
+                    instance = new HikariDataSource(config);
+                }
+            }
+        }
+        return instance;
+    }
+
+}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/components/JdbcTaosdemoConfig.java

@@ -0,0 +1,218 @@
+package com.taosdata.taosdemo.components;
+
+import com.taosdata.taosdemo.utils.TimeStampUtil;
+
+public final class JdbcTaosdemoConfig {
+    // instance
+    public String host;                     //host
+    public int port = 6030;                 //port
+    public String user = "root";            //user
+    public String password = "taosdata";    //password
+    // database
+    public String database = "jdbcdb";        //database
+    public int keep = 3650;                 //keep
+    public int days = 30;                   //days
+    public int replica = 1;                 //replica
+    public int blocks = 16;
+    public int cache = 8;
+    public String precision = "ms";
+
+    //super table
+    public boolean doCreateTable = true;
+    public String superTable = "weather";   //super table name
+    public String prefixOfFields = "col";
+    public int numOfFields;
+    public String prefixOfTags = "tag";
+    public int numOfTags;
+    public String superTableSQL;
+    //sub table
+    public String prefixOfTable = "t";
+    // insert task
+    public boolean autoCreateTable;
+    public long numOfTables = 10;
+    public long numOfRowsPerTable = 10;
+    public int numOfTablesPerSQL = 1;
+    public int numOfValuesPerSQL = 1;
+    public int numOfThreadsForCreate = 1;
+    public int numOfThreadsForInsert = 1;
+    public long startTime;
+    public long timeGap = 1;
+    public int frequency;
+    public int order;
+    public int rate = 10;
+    public long range = 1000l;
+    // select task
+
+    // drop task
+    public boolean dropTable = false;
+
+    public static void printHelp() {
+        System.out.println("Usage: java -jar jdbc-taosdemo-2.0.jar [OPTION...]");
+        // instance
+        System.out.println("-host                       The host to connect to TDengine which you must specify");
+        System.out.println("-port                       The TCP/IP port number to use for the connection. Default is 6030");
+        System.out.println("-user                       The TDengine user name to use when connecting to the server. Default is 'root'");
+        System.out.println("-password                   The password to use when connecting to the server.Default is 'taosdata'");
+        // database
+        System.out.println("-database                   Destination database. Default is 'jdbcdb'");
+        System.out.println("-keep                       database keep parameter. Default is 3650");
+        System.out.println("-days                       database days parameter. Default is 30");
+        System.out.println("-replica                    database replica parameter. Default 1, min: 1, max: 3");
+        System.out.println("-blocks                     database blocks parameter. Default is 16");
+        System.out.println("-cache                      database cache parameter. Default is 8");
+        System.out.println("-precision                  database precision parameter. Default is ms");
+
+        // super table
+        System.out.println("-doCreateTable              do create super table and sub table, true or false, Default true");
+        System.out.println("-superTable                 super table name. Default 'weather'");
+        System.out.println("-prefixOfFields             The prefix of field in super table. Default is 'col'");
+        System.out.println("-numOfFields                The number of field in super table. Default is (ts timestamp, temperature float, humidity int).");
+        System.out.println("-prefixOfTags               The prefix of tag in super table. Default is 'tag'");
+        System.out.println("-numOfTags                  The number of tag in super table. Default is (location nchar(64), groupId int).");
+        System.out.println("-superTableSQL              specify a sql statement for the super table.\n" +
+                "                            Default is 'create table weather(ts timestamp, temperature float, humidity int) tags(location nchar(64), groupId int). \n" +
+                "                            if you use this parameter, the numOfFields and numOfTags will be invalid'");
+        // sub table
+        System.out.println("-prefixOfTable              The prefix of sub tables. Default is 't'");
+        System.out.println("-numOfTables                The number of tables. Default is 1");
+        System.out.println("-numOfThreadsForCreate      The number of thread during create sub table. Default is 1");
+        // insert task
+        System.out.println("-autoCreateTable            Use auto Create sub tables SQL. Default is false");
+        System.out.println("-numOfRowsPerTable          The number of records per table. Default is 1");
+        System.out.println("-numOfThreadsForInsert      The number of threads during insert row. Default is 1");
+        System.out.println("-numOfTablesPerSQL          The number of table per SQL. Default is 1");
+        System.out.println("-numOfValuesPerSQL          The number of value per SQL. Default is 1");
+        System.out.println("-startTime                  start time for insert task, The format is \"yyyy-MM-dd HH:mm:ss.SSS\".");
+        System.out.println("-timeGap                    the number of time gap. Default is 1000 ms");
+        System.out.println("-frequency                  the number of records per second inserted into one table. default is 0, do not control frequency");
+        System.out.println("-order                      Insert mode--0: In order, 1: Out of order. Default is in order");
+        System.out.println("-rate                       The proportion of data out of order. effective only if order is 1. min 0, max 100, default is 10");
+        System.out.println("-range                      The range of data out of order. effective only if order is 1. default is 1000 ms");
+        // query task
+//        System.out.println("-sqlFile                   The select sql file");
+        // drop task
+        System.out.println("-dropTable                  Drop data before quit. Default is false");
+        System.out.println("--help                      Give this help list");
+    }
+
+    /**
+     * parse args from command line
+     *
+     * @param args command line args
+     * @return JdbcTaosdemoConfig
+     */
+    public JdbcTaosdemoConfig(String[] args) {
+        for (int i = 0; i < args.length; i++) {
+            // instance
+            if ("-host".equals(args[i]) && i < args.length - 1) {
+                host = args[++i];
+            }
+            if ("-port".equals(args[i]) && i < args.length - 1) {
+                port = Integer.parseInt(args[++i]);
+            }
+            if ("-user".equals(args[i]) && i < args.length - 1) {
+                user = args[++i];
+            }
+            if ("-password".equals(args[i]) && i < args.length - 1) {
+                password = args[++i];
+            }
+            // database
+            if ("-database".equals(args[i]) && i < args.length - 1) {
+                database = args[++i];
+            }
+            if ("-keep".equals(args[i]) && i < args.length - 1) {
+                keep = Integer.parseInt(args[++i]);
+            }
+            if ("-days".equals(args[i]) && i < args.length - 1) {
+                days = Integer.parseInt(args[++i]);
+            }
+            if ("-replica".equals(args[i]) && i < args.length - 1) {
+                replica = Integer.parseInt(args[++i]);
+            }
+            if ("-blocks".equals(args[i]) && i < args.length - 1) {
+                blocks = Integer.parseInt(args[++i]);
+            }
+            if ("-cache".equals(args[i]) && i < args.length - 1) {
+                cache = Integer.parseInt(args[++i]);
+            }
+            if ("-precision".equals(args[i]) && i < args.length - 1) {
+                precision = args[++i];
+            }
+            // super table
+            if ("-doCreateTable".equals(args[i]) && i < args.length - 1) {
+                doCreateTable = Boolean.parseBoolean(args[++i]);
+            }
+            if ("-superTable".equals(args[i]) && i < args.length - 1) {
+                superTable = args[++i];
+            }
+            if ("-prefixOfFields".equals(args[i]) && i < args.length - 1) {
+                prefixOfFields = args[++i];
+            }
+            if ("-numOfFields".equals(args[i]) && i < args.length - 1) {
+                numOfFields = Integer.parseInt(args[++i]);
+            }
+            if ("-prefixOfTags".equals(args[i]) && i < args.length - 1) {
+                prefixOfTags = args[++i];
+            }
+            if ("-numOfTags".equals(args[i]) && i < args.length - 1) {
+                numOfTags = Integer.parseInt(args[++i]);
+            }
+            if ("-superTableSQL".equals(args[i]) && i < args.length - 1) {
+                superTableSQL = args[++i];
+            }
+            // sub table
+            if ("-prefixOfTable".equals(args[i]) && i < args.length - 1) {
+                prefixOfTable = args[++i];
+            }
+            if ("-numOfTables".equals(args[i]) && i < args.length - 1) {
+                numOfTables = Long.parseLong(args[++i]);
+            }
+            if ("-autoCreateTable".equals(args[i]) && i < args.length - 1) {
+                autoCreateTable = Boolean.parseBoolean(args[++i]);
+            }
+            if ("-numOfThreadsForCreate".equals(args[i]) && i < args.length - 1) {
+                numOfThreadsForCreate = Integer.parseInt(args[++i]);
+            }
+            // insert task
+            if ("-numOfRowsPerTable".equals(args[i]) && i < args.length - 1) {
+                numOfRowsPerTable = Long.parseLong(args[++i]);
+            }
+            if ("-numOfThreadsForInsert".equals(args[i]) && i < args.length - 1) {
+                numOfThreadsForInsert = Integer.parseInt(args[++i]);
+            }
+            if ("-numOfTablesPerSQL".equals(args[i]) && i < args.length - 1) {
+                numOfTablesPerSQL = Integer.parseInt(args[++i]);
+            }
+            if ("-numOfValuesPerSQL".equals(args[i]) && i < args.length - 1) {
+                numOfValuesPerSQL = Integer.parseInt(args[++i]);
+            }
+            if ("-startTime".equals(args[i]) && i < args.length - 1) {
+                startTime = TimeStampUtil.datetimeToLong(args[++i]);
+            }
+            if ("-timeGap".equals(args[i]) && i < args.length - 1) {
+                timeGap = Long.parseLong(args[++i]);
+            }
+            if ("-frequency".equals(args[i]) && i < args.length - 1) {
+                frequency = Integer.parseInt(args[++i]);
+            }
+            if ("-order".equals(args[i]) && i < args.length - 1) {
+                order = Integer.parseInt(args[++i]);
+            }
+            if ("-rate".equals(args[i]) && i < args.length - 1) {
+                rate = Integer.parseInt(args[++i]);
+                if (rate < 0 || rate > 100)
+                    throw new IllegalArgumentException("rate must between 0 and 100");
+            }
+            if ("-range".equals(args[i]) && i < args.length - 1) {
+                range = Integer.parseInt(args[++i]);
+            }
+            // select task
+
+            // drop task
+            if ("-dropTable".equals(args[i]) && i < args.length - 1) {
+                dropTable = Boolean.parseBoolean(args[++i]);
+            }
+        }
+    }
+
+}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/components/JsonConfig.java

@@ -0,0 +1,39 @@
+package com.taosdata.taosdemo.components;
+
+import com.alibaba.fastjson.JSONObject;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class JsonConfig {
+
+    public static void main(String[] args) {
+
+        JsonConfig config = new JsonConfig();
+        String str = config.read("insert.json");
+        JSONObject jsonObject = JSONObject.parseObject(str);
+        System.out.println(jsonObject);
+
+    }
+
+    private String read(String fileName) {
+        try {
+            BufferedReader reader = new BufferedReader(
+                    new InputStreamReader(JsonConfig.class.getClassLoader().getResourceAsStream(fileName))
+            );
+            StringBuilder sb = new StringBuilder();
+            String line = null;
+            while ((line = reader.readLine()) != null) {
+                sb.append(line);
+            }
+            return sb.toString();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        return fileName;
+    }
+
+
+}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/components/TaosDemoCommandLineRunner.java

@@ -1,174 +0,0 @@
-package com.taosdata.taosdemo.components;
-
-import com.taosdata.taosdemo.domain.*;
-import com.taosdata.taosdemo.service.DatabaseService;
-import com.taosdata.taosdemo.service.SubTableService;
-import com.taosdata.taosdemo.service.SuperTableService;
-import com.taosdata.taosdemo.service.data.SubTableMetaGenerator;
-import com.taosdata.taosdemo.service.data.SubTableValueGenerator;
-import com.taosdata.taosdemo.service.data.SuperTableMetaGenerator;
-import com.taosdata.taosdemo.utils.JdbcTaosdemoConfig;
-import org.apache.log4j.Logger;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.CommandLineRunner;
-import org.springframework.stereotype.Component;
-
-import java.util.*;
-import java.util.concurrent.TimeUnit;
-
-
-@Component
-public class TaosDemoCommandLineRunner implements CommandLineRunner {
-
-    private static Logger logger = Logger.getLogger(TaosDemoCommandLineRunner.class);
-    @Autowired
-    private DatabaseService databaseService;
-    @Autowired
-    private SuperTableService superTableService;
-    @Autowired
-    private SubTableService subTableService;
-
-    private SuperTableMeta superTableMeta;
-    private List<SubTableMeta> subTableMetaList;
-    private List<SubTableValue> subTableValueList;
-    private List<List<SubTableValue>> dataList;
-
-
-    @Override
-    public void run(String... args) throws Exception {
-        // 读配置参数
-        JdbcTaosdemoConfig config = new JdbcTaosdemoConfig(args);
-        boolean isHelp = Arrays.asList(args).contains("--help");
-        if (isHelp) {
-            JdbcTaosdemoConfig.printHelp();
-            System.exit(0);
-        }
-        // 准备数据
-        prepareData(config);
-        // 创建数据库
-        createDatabaseTask(config);
-        // 建表
-        createTableTask(config);
-        // 插入
-        insertTask(config);
-        // 查询: 1. 生成查询语句, 2. 执行查询
-        // 删除表
-        if (config.dropTable) {
-            superTableService.drop(config.database, config.superTable);
-        }
-
-        System.exit(0);
-    }
-
-    private void createDatabaseTask(JdbcTaosdemoConfig config) {
-        long start = System.currentTimeMillis();
-
-        Map<String, String> databaseParam = new HashMap<>();
-        databaseParam.put("database", config.database);
-        databaseParam.put("keep", Integer.toString(config.keep));
-        databaseParam.put("days", Integer.toString(config.days));
-        databaseParam.put("replica", Integer.toString(config.replica));
-        //TODO: other database parameters
-        databaseService.dropDatabase(config.database);
-        databaseService.createDatabase(databaseParam);
-        databaseService.useDatabase(config.database);
-
-        long end = System.currentTimeMillis();
-        logger.info(">>> insert time cost : " + (end - start) + " ms.");
-    }
-
-    // 建超级表，三种方式：1. 指定SQL，2. 指定field和tags的个数，3. 默认
-    private void createTableTask(JdbcTaosdemoConfig config) {
-        long start = System.currentTimeMillis();
-        if (config.doCreateTable) {
-            superTableService.create(superTableMeta);
-            // 批量建子表
-            subTableService.createSubTable(subTableMetaList, config.numOfThreadsForCreate);
-        }
-        long end = System.currentTimeMillis();
-        logger.info(">>> create table time cost : " + (end - start) + " ms.");
-    }
-
-    private void insertTask(JdbcTaosdemoConfig config) {
-        long start = System.currentTimeMillis();
-
-        int numOfThreadsForInsert = config.numOfThreadsForInsert;
-        int sleep = config.sleep;
-        if (config.autoCreateTable) {
-            // 批量插入，自动建表
-            dataList.stream().forEach(subTableValues -> {
-                subTableService.insertAutoCreateTable(subTableValues, numOfThreadsForInsert);
-                sleep(sleep);
-            });
-        } else {
-            dataList.stream().forEach(subTableValues -> {
-                subTableService.insert(subTableValues, numOfThreadsForInsert);
-                sleep(sleep);
-            });
-        }
-        long end = System.currentTimeMillis();
-        logger.info(">>> insert time cost : " + (end - start) + " ms.");
-    }
-
-    private void prepareData(JdbcTaosdemoConfig config) {
-        long start = System.currentTimeMillis();
-        // 超级表的meta
-        superTableMeta = createSupertable(config);
-        // 子表的meta
-        subTableMetaList = SubTableMetaGenerator.generate(superTableMeta, config.numOfTables, config.tablePrefix);
-        // 子表的data
-        subTableValueList = SubTableValueGenerator.generate(subTableMetaList, config.numOfRowsPerTable, config.startTime, config.timeGap);
-        // 如果有乱序，给数据搞乱
-        if (config.order != 0) {
-            SubTableValueGenerator.disrupt(subTableValueList, config.rate, config.range);
-        }
-        // 分割数据
-        int numOfTables = config.numOfTables;
-        int numOfTablesPerSQL = config.numOfTablesPerSQL;
-        int numOfRowsPerTable = config.numOfRowsPerTable;
-        int numOfValuesPerSQL = config.numOfValuesPerSQL;
-        dataList = SubTableValueGenerator.split(subTableValueList, numOfTables, numOfTablesPerSQL, numOfRowsPerTable, numOfValuesPerSQL);
-        long end = System.currentTimeMillis();
-        logger.info(">>> prepare data time cost : " + (end - start) + " ms.");
-    }
-
-    private SuperTableMeta createSupertable(JdbcTaosdemoConfig config) {
-        SuperTableMeta tableMeta;
-        // create super table
-        logger.info(">>> create super table <<<");
-        if (config.superTableSQL != null) {
-            // use a sql to create super table
-            tableMeta = SuperTableMetaGenerator.generate(config.superTableSQL);
-        } else if (config.numOfFields == 0) {
-            // default sql = "create table test.weather (ts timestamp, temperature float, humidity int) tags(location nchar(64), groupId int)";
-            SuperTableMeta superTableMeta = new SuperTableMeta();
-            superTableMeta.setDatabase(config.database);
-            superTableMeta.setName(config.superTable);
-            List<FieldMeta> fields = new ArrayList<>();
-            fields.add(new FieldMeta("ts", "timestamp"));
-            fields.add(new FieldMeta("temperature", "float"));
-            fields.add(new FieldMeta("humidity", "int"));
-            superTableMeta.setFields(fields);
-            List<TagMeta> tags = new ArrayList<>();
-            tags.add(new TagMeta("location", "nchar(64)"));
-            tags.add(new TagMeta("groupId", "int"));
-            superTableMeta.setTags(tags);
-            return superTableMeta;
-        } else {
-            // create super table with specified field size and tag size
-            tableMeta = SuperTableMetaGenerator.generate(config.database, config.superTable, config.numOfFields, config.prefixOfFields, config.numOfTags, config.prefixOfTags);
-        }
-        return tableMeta;
-    }
-
-    private static void sleep(int sleep) {
-        if (sleep <= 0)
-            return;
-        try {
-            TimeUnit.MILLISECONDS.sleep(sleep);
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-        }
-    }
-
-}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/controller/DatabaseController.java

@@ -1,40 +0,0 @@
-package com.taosdata.taosdemo.controller;
-
-import com.taosdata.taosdemo.service.DatabaseService;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.web.bind.annotation.*;
-
-import java.util.Map;
-
-@RestController
-@RequestMapping
-public class DatabaseController {
-
-    @Autowired
-    private DatabaseService databaseService;
-
-    /**
-     * create database
-     ***/
-    @PostMapping
-    public int create(@RequestBody Map<String, String> map) {
-        return databaseService.createDatabase(map);
-    }
-
-
-    /**
-     * drop database
-     **/
-    @DeleteMapping("/{dbname}")
-    public int delete(@PathVariable("dbname") String dbname) {
-        return databaseService.dropDatabase(dbname);
-    }
-
-    /**
-     * use database
-     **/
-    @GetMapping("/{dbname}")
-    public int use(@PathVariable("dbname") String dbname) {
-        return databaseService.useDatabase(dbname);
-    }
-}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/controller/InsertController.java

@@ -1,17 +0,0 @@
-package com.taosdata.taosdemo.controller;
-
-import org.springframework.web.bind.annotation.RestController;
-
-@RestController
-public class InsertController {
-
-    //TODO：多线程写一张表, thread = 10, table = 1
-    //TODO：一个批次写多张表, insert into t1 using weather values() t2 using weather values()
-    //TODO：插入的频率，
-    //TODO：指定一张表内的records数量
-    //TODO：是否乱序，
-    //TODO：乱序的比例，乱序的范围
-    //TODO：先建表，自动建表
-    //TODO：一个批次写多张表
-
-}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/controller/SubTableController.java

@@ -1,45 +0,0 @@
-package com.taosdata.taosdemo.controller;
-
-import com.taosdata.taosdemo.domain.TableValue;
-import com.taosdata.taosdemo.service.SuperTableService;
-import com.taosdata.taosdemo.service.TableService;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RestController;
-
-@RestController
-public class SubTableController {
-
-    @Autowired
-    private TableService tableService;
-    @Autowired
-    private SuperTableService superTableService;
-
-    //TODO: 使用supertable创建一个子表
-
-    //TODO：使用supertable创建多个子表
-
-    //TODO：使用supertable多线程创建子表
-
-    //TODO：使用supertable多线程创建子表，指定子表的name_prefix，子表的数量，使用线程的个数
-
-    /**
-     * 创建表，超级表或者普通表
-     **/
-
-
-    /**
-     * 创建超级表的子表
-     **/
-    @PostMapping("/{database}/{superTable}")
-    public int createTable(@PathVariable("database") String database,
-                           @PathVariable("superTable") String superTable,
-                           @RequestBody TableValue tableMetadta) {
-        tableMetadta.setDatabase(database);
-        return 0;
-    }
-
-
-}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/controller/SuperTableController.java

@@ -1,26 +0,0 @@
-package com.taosdata.taosdemo.controller;
-
-import com.taosdata.taosdemo.domain.SuperTableMeta;
-import com.taosdata.taosdemo.service.SuperTableService;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-
-public class SuperTableController {
-    @Autowired
-    private SuperTableService superTableService;
-
-
-    @PostMapping("/{database}")
-    public int createTable(@PathVariable("database") String database, @RequestBody SuperTableMeta tableMetadta) {
-        tableMetadta.setDatabase(database);
-        return superTableService.create(tableMetadta);
-    }
-
-    //TODO: 删除超级表
-
-    //TODO：查询超级表
-
-    //TODO：统计查询表
-}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/controller/TableController.java

@@ -1,11 +0,0 @@
-package com.taosdata.taosdemo.controller;
-
-public class TableController {
-
-    //TODO：创建普通表，create table(ts timestamp, temperature float)
-
-    //TODO：创建普通表，指定表的列数，包括第一列timestamp
-
-    //TODO：创建普通表，指定表每列的name和type
-
-}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/DatabaseMapper.java

@@ -0,0 +1,23 @@
+package com.taosdata.taosdemo.dao;
+
+import java.util.Map;
+
+public interface DatabaseMapper {
+
+    // create database if not exists XXX
+    void createDatabase(String dbname);
+
+    // drop database if exists XXX
+    void dropDatabase(String dbname);
+
+    // create database if not exists XXX keep XX days XX replica XX
+    void createDatabaseWithParameters(Map<String, String> map);
+
+    // use XXX
+    void useDatabase(String dbname);
+
+    //TODO: alter database
+
+    //TODO: show database
+
+}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/DatabaseMapperImpl.java

@@ -0,0 +1,47 @@
+package com.taosdata.taosdemo.dao;
+
+import com.taosdata.taosdemo.utils.SqlSpeller;
+import org.apache.log4j.Logger;
+import org.springframework.jdbc.core.JdbcTemplate;
+
+import javax.sql.DataSource;
+import java.util.Map;
+
+public class DatabaseMapperImpl implements DatabaseMapper {
+    private static final Logger logger = Logger.getLogger(DatabaseMapperImpl.class);
+
+    private final JdbcTemplate jdbcTemplate;
+
+    public DatabaseMapperImpl(DataSource dataSource) {
+        this.jdbcTemplate = new JdbcTemplate(dataSource);
+    }
+
+
+    @Override
+    public void createDatabase(String dbname) {
+        String sql = "create database if not exists " + dbname;
+        jdbcTemplate.execute(sql);
+        logger.info("SQL >>> " + sql);
+    }
+
+    @Override
+    public void dropDatabase(String dbname) {
+        String sql = "drop database if exists " + dbname;
+        jdbcTemplate.update(sql);
+        logger.info("SQL >>> " + sql);
+    }
+
+    @Override
+    public void createDatabaseWithParameters(Map<String, String> map) {
+        String sql = SqlSpeller.createDatabase(map);
+        jdbcTemplate.execute(sql);
+        logger.info("SQL >>> " + sql);
+    }
+
+    @Override
+    public void useDatabase(String dbname) {
+        String sql = "use " + dbname;
+        jdbcTemplate.execute(sql);
+        logger.info("SQL >>> " + sql);
+    }
+}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/SubTableMapper.java

@@ -1,8 +1,7 @@
-package com.taosdata.taosdemo.mapper;
+package com.taosdata.taosdemo.dao;
 
 import com.taosdata.taosdemo.domain.SubTableMeta;
 import com.taosdata.taosdemo.domain.SubTableValue;
-import org.apache.ibatis.annotations.Param;
 import org.springframework.stereotype.Repository;
 
 import java.util.List;
@@ -11,7 +10,7 @@ import java.util.List;
 public interface SubTableMapper {
 
     // 创建：子表
-    int createUsingSuperTable(SubTableMeta subTableMeta);
+    void createUsingSuperTable(SubTableMeta subTableMeta);
 
     // 插入：一张子表多个values
     int insertOneTableMultiValues(SubTableValue subTableValue);
@@ -20,10 +19,10 @@ public interface SubTableMapper {
     int insertOneTableMultiValuesUsingSuperTable(SubTableValue subTableValue);
 
     // 插入：多张表多个values
-    int insertMultiTableMultiValues(@Param("tables") List<SubTableValue> tables);
+    int insertMultiTableMultiValues(List<SubTableValue> tables);
 
     // 插入：多张表多个values，自动建表
-    int insertMultiTableMultiValuesUsingSuperTable(@Param("tables") List<SubTableValue> tables);
+    int insertMultiTableMultiValuesUsingSuperTable(List<SubTableValue> tables);
 
     //<!-- TODO:修改子表标签值 alter table ${tablename} set tag tagName=newTagValue-->
 

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/SubTableMapperImpl.java

@@ -0,0 +1,81 @@
+package com.taosdata.taosdemo.dao;
+
+import com.taosdata.taosdemo.domain.SubTableMeta;
+import com.taosdata.taosdemo.domain.SubTableValue;
+import com.taosdata.taosdemo.utils.SqlSpeller;
+import org.apache.log4j.Logger;
+import org.springframework.jdbc.core.JdbcTemplate;
+
+import javax.sql.DataSource;
+import java.util.List;
+
+public class SubTableMapperImpl implements SubTableMapper {
+
+    private static final Logger logger = Logger.getLogger(SubTableMapperImpl.class);
+    private final JdbcTemplate jdbcTemplate;
+
+    public SubTableMapperImpl(DataSource dataSource) {
+        this.jdbcTemplate = new JdbcTemplate(dataSource);
+    }
+
+    @Override
+    public void createUsingSuperTable(SubTableMeta subTableMeta) {
+        String sql = SqlSpeller.createTableUsingSuperTable(subTableMeta);
+        logger.info("SQL >>> " + sql);
+        jdbcTemplate.execute(sql);
+    }
+
+    @Override
+    public int insertOneTableMultiValues(SubTableValue subTableValue) {
+        String sql = SqlSpeller.insertOneTableMultiValues(subTableValue);
+        logger.info("SQL >>> " + sql);
+
+        int affectRows = 0;
+        try {
+            affectRows = jdbcTemplate.update(sql);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return affectRows;
+    }
+
+    @Override
+    public int insertOneTableMultiValuesUsingSuperTable(SubTableValue subTableValue) {
+        String sql = SqlSpeller.insertOneTableMultiValuesUsingSuperTable(subTableValue);
+        logger.info("SQL >>> " + sql);
+
+        int affectRows = 0;
+        try {
+            affectRows = jdbcTemplate.update(sql);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return affectRows;
+    }
+
+    @Override
+    public int insertMultiTableMultiValues(List<SubTableValue> tables) {
+        String sql = SqlSpeller.insertMultiSubTableMultiValues(tables);
+        logger.info("SQL >>> " + sql);
+        int affectRows = 0;
+        try {
+            affectRows = jdbcTemplate.update(sql);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return affectRows;
+    }
+
+    @Override
+    public int insertMultiTableMultiValuesUsingSuperTable(List<SubTableValue> tables) {
+        String sql = SqlSpeller.insertMultiTableMultiValuesUsingSuperTable(tables);
+        logger.info("SQL >>> " + sql);
+        int affectRows = 0;
+        try {
+            affectRows = jdbcTemplate.update(sql);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return affectRows;
+    }
+}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/SuperTableMapper.java

@@ -1,20 +1,16 @@
-package com.taosdata.taosdemo.mapper;
+package com.taosdata.taosdemo.dao;
 
 import com.taosdata.taosdemo.domain.SuperTableMeta;
-import org.apache.ibatis.annotations.Param;
 import org.springframework.stereotype.Repository;
 
 @Repository
 public interface SuperTableMapper {
 
-    // 创建超级表，使用自己定义的SQL语句
-    int createSuperTableUsingSQL(@Param("createSuperTableSQL") String sql);
-
     // 创建超级表 create table if not exists xxx.xxx (f1 type1, f2 type2, ... ) tags( t1 type1, t2 type2 ...)
-    int createSuperTable(SuperTableMeta tableMetadata);
+    void createSuperTable(SuperTableMeta tableMetadata);
 
     // 删除超级表 drop table if exists xxx;
-    int dropSuperTable(@Param("database") String database, @Param("name") String name);
+    void dropSuperTable(String database, String name);
 
     //<!-- TODO:查询所有超级表信息 show stables -->
 

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/SuperTableMapperImpl.java

@@ -0,0 +1,31 @@
+package com.taosdata.taosdemo.dao;
+
+import com.taosdata.taosdemo.domain.SuperTableMeta;
+import com.taosdata.taosdemo.utils.SqlSpeller;
+import org.apache.log4j.Logger;
+import org.springframework.jdbc.core.JdbcTemplate;
+
+import javax.sql.DataSource;
+
+public class SuperTableMapperImpl implements SuperTableMapper {
+    private static final Logger logger = Logger.getLogger(SuperTableMapperImpl.class);
+    private JdbcTemplate jdbcTemplate;
+
+    public SuperTableMapperImpl(DataSource dataSource) {
+        this.jdbcTemplate = new JdbcTemplate(dataSource);
+    }
+
+    @Override
+    public void createSuperTable(SuperTableMeta tableMetadata) {
+        String sql = SqlSpeller.createSuperTable(tableMetadata);
+        logger.info("SQL >>> " + sql);
+        jdbcTemplate.execute(sql);
+    }
+
+    @Override
+    public void dropSuperTable(String database, String name) {
+        String sql = "drop table if exists " + database + "." + name;
+        logger.info("SQL >>> " + sql);
+        jdbcTemplate.execute(sql);
+    }
+}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/TableMapper.java

@@ -1,8 +1,7 @@
-package com.taosdata.taosdemo.mapper;
+package com.taosdata.taosdemo.dao;
 
 import com.taosdata.taosdemo.domain.TableMeta;
 import com.taosdata.taosdemo.domain.TableValue;
-import org.apache.ibatis.annotations.Param;
 import org.springframework.stereotype.Repository;
 
 import java.util.List;
@@ -11,7 +10,7 @@ import java.util.List;
 public interface TableMapper {
 
     // 创建：普通表
-    int create(TableMeta tableMeta);
+    void create(TableMeta tableMeta);
 
     // 插入：一张表多个value
     int insertOneTableMultiValues(TableValue values);
@@ -20,9 +19,9 @@ public interface TableMapper {
     int insertOneTableMultiValuesWithColumns(TableValue values);
 
     // 插入：多个表多个value
-    int insertMultiTableMultiValues(@Param("tables") List<TableValue> tables);
+    int insertMultiTableMultiValues(List<TableValue> tables);
 
     // 插入：多个表多个value, 指定的列
-    int insertMultiTableMultiValuesWithColumns(@Param("tables") List<TableValue> tables);
+    int insertMultiTableMultiValuesWithColumns(List<TableValue> tables);
 
 }

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/TableMapperImpl.java

@@ -0,0 +1,43 @@
+package com.taosdata.taosdemo.dao;
+
+import com.taosdata.taosdemo.dao.TableMapper;
+import com.taosdata.taosdemo.domain.TableMeta;
+import com.taosdata.taosdemo.domain.TableValue;
+import com.taosdata.taosdemo.utils.SqlSpeller;
+import org.springframework.jdbc.core.JdbcTemplate;
+
+import java.util.List;
+
+public class TableMapperImpl implements TableMapper {
+    private JdbcTemplate template;
+
+    @Override
+    public void create(TableMeta tableMeta) {
+        String sql = SqlSpeller.createTable(tableMeta);
+        template.execute(sql);
+    }
+
+    @Override
+    public int insertOneTableMultiValues(TableValue values) {
+        String sql = SqlSpeller.insertOneTableMultiValues(values);
+        return template.update(sql);
+    }
+
+    @Override
+    public int insertOneTableMultiValuesWithColumns(TableValue values) {
+        String sql = SqlSpeller.insertOneTableMultiValuesWithColumns(values);
+        return template.update(sql);
+    }
+
+    @Override
+    public int insertMultiTableMultiValues(List<TableValue> tables) {
+        String sql = SqlSpeller.insertMultiTableMultiValues(tables);
+        return template.update(sql);
+    }
+
+    @Override
+    public int insertMultiTableMultiValuesWithColumns(List<TableValue> tables) {
+        String sql = SqlSpeller.insertMultiTableMultiValuesWithColumns(tables);
+        return template.update(sql);
+    }
+}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/domain/RowValue.java

@@ -8,7 +8,6 @@ import java.util.List;
 public class RowValue {
     private List<FieldValue> fields;
 
-
     public RowValue(List<FieldValue> fields) {
         this.fields = fields;
     }

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/mapper/DatabaseMapper.java

@@ -1,27 +0,0 @@
-package com.taosdata.taosdemo.mapper;
-
-import org.apache.ibatis.annotations.Param;
-import org.springframework.stereotype.Repository;
-
-import java.util.Map;
-
-@Repository
-public interface DatabaseMapper {
-
-    // create database if not exists XXX
-    int createDatabase(@Param("database") String dbname);
-
-    // drop database if exists XXX
-    int dropDatabase(@Param("database") String dbname);
-
-    // create database if not exists XXX keep XX days XX replica XX
-    int createDatabaseWithParameters(Map<String, String> map);
-
-    // use XXX
-    int useDatabase(@Param("database") String dbname);
-
-    //TODO: alter database
-
-    //TODO: show database
-
-}

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/mapper/DatabaseMapper.xml

@@ -1,48 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
-
-<mapper namespace="com.taosdata.taosdemo.mapper.DatabaseMapper">
-
-    <!-- create database XXX -->
-    <update id="createDatabase" parameterType="java.lang.String">
-        create database if not exists ${database}
-    </update>
-
-    <update id="dropDatabase" parameterType="java.lang.String">
-        DROP database if exists ${database}
-    </update>
-
-    <update id="createDatabaseWithParameters" parameterType="map">
-        CREATE database if not exists ${database}
-        <if test="keep != null">
-            KEEP ${keep}
-        </if>
-        <if test="days != null">
-            DAYS ${days}
-        </if>
-        <if test="replica != null">
-            REPLICA ${replica}
-        </if>
-        <if test="cache != null">
-            cache ${cache}
-        </if>
-        <if test="blocks != null">
-            blocks ${blocks}
-        </if>
-        <if test="minrows != null">
-            minrows ${minrows}
-        </if>
-        <if test="maxrows != null">
-            maxrows ${maxrows}
-        </if>
-    </update>
-
-    <update id="useDatabase" parameterType="java.lang.String">
-        use ${database}
-    </update>
-
-    <!-- TODO: alter database -->
-
-    <!-- TODO: show database -->
-
-</mapper>

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/mapper/SubTableMapper.xml

@@ -1,81 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
-
-<mapper namespace="com.taosdata.taosdemo.mapper.SubTableMapper">
-
-    <!-- 创建子表 -->
-    <update id="createUsingSuperTable">
-        CREATE table IF NOT EXISTS ${database}.${name} USING ${supertable} TAGS
-        <foreach collection="tags" item="tag" index="index" open="(" close=")" separator=",">
-            #{tag.value}
-        </foreach>
-    </update>
-
-    <!-- 插入：向一张表中插入多张表 -->
-    <insert id="insertOneTableMultiValues">
-        INSERT INTO ${database}.${name}
-        VALUES
-        <foreach collection="values" item="value">
-            <foreach collection="value.fields" item="field" open="(" close=")" separator=",">
-                #{field.value}
-            </foreach>
-        </foreach>
-    </insert>
-
-    <!-- 插入：使用自动建表模式，向一张表中插入多条数据 -->
-    <insert id="insertOneTableMultiValuesUsingSuperTable">
-        INSERT INTO ${database}.${name} USING ${supertable} TAGS
-        <foreach collection="tags" item="tag" index="index" open="(" close=")" separator=",">
-            #{tag.value}
-        </foreach>
-        VALUES
-        <foreach collection="values" item="value">
-            <foreach collection="value.fields" item="field" open="(" close=")" separator=",">
-                #{field.value}
-            </foreach>
-        </foreach>
-    </insert>
-
-    <!-- TODO:插入：向一张表中插入多张表, 指定列 -->
-
-    <!-- TODO:插入：向一张表中插入多张表, 自动建表，指定列 -->
-
-    <!-- 插入：向多张表中插入多条数据 -->
-    <insert id="insertMultiTableMultiValues">
-        INSERT INTO
-        <foreach collection="tables" item="table">
-            ${table.database}.${table.name}
-            VALUES
-            <foreach collection="table.values" item="value">
-                <foreach collection="value.fields" item="field" open="(" close=")" separator=",">
-                    #{field.value}
-                </foreach>
-            </foreach>
-        </foreach>
-    </insert>
-
-    <!-- 插入：向多张表中插入多条数据，自动建表 -->
-    <insert id="insertMultiTableMultiValuesUsingSuperTable">
-        INSERT INTO
-        <foreach collection="tables" item="table">
-            ${table.database}.${table.name} USING ${table.supertable} TAGS
-            <foreach collection="table.tags" item="tag" index="index" open="(" close=")" separator=",">
-                #{tag.value}
-            </foreach>
-            VALUES
-            <foreach collection="table.values" item="value">
-                <foreach collection="value.fields" item="field" open="(" close=")" separator=",">
-                    #{field.value}
-                </foreach>
-            </foreach>
-        </foreach>
-    </insert>
-
-    <!-- TODO:插入：向多张表中插入多张表, 指定列 -->
-
-    <!-- TODO:插入：向多张表中插入多张表, 自动建表，指定列 -->
-
-    <!-- TODO:修改子表标签值 alter table ${tablename} set tag tagName=newTagValue -->
-    <!-- TODO: -->
-
-</mapper>

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/mapper/SuperTableMapper.xml

@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
-
-<mapper namespace="com.taosdata.taosdemo.mapper.SuperTableMapper">
-
-    <update id="createSuperTableUsingSQL">
-        ${createSuperTableSQL}
-    </update>
-
-    <!-- 创建超级表 -->
-    <update id="createSuperTable">
-        create table if not exists ${database}.${name}
-        <foreach collection="fields" item="field" index="index" open="(" close=")" separator=",">
-            ${field.name} ${field.type}
-        </foreach>
-        tags
-        <foreach collection="tags" item="tag" index="index" open="(" close=")" separator=",">
-            ${tag.name} ${tag.type}
-        </foreach>
-    </update>
-
-    <!-- 删除超级表：drop super table -->
-    <delete id="dropSuperTable">
-        drop table if exists ${database}.${name}
-    </delete>
-
-    <!-- TODO:查询所有超级表信息 show stables -->
-
-    <!-- TODO:查询表结构 describe stable -->
-
-    <!-- TODO:增加列 alter table ${tablename} add column fieldName dataType -->
-
-    <!-- TODO:删除列 alter table ${tablename} drop column fieldName -->
-
-    <!-- TODO:添加标签 alter table ${tablename} add tag new_tagName tag_type -->
-
-    <!-- TODO:删除标签 alter table ${tablename} drop tag_name -->
-
-    <!-- TODO:修改标签名 alter table ${tablename} change tag old_tagName new_tagName -->
-
-</mapper>

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/mapper/TableMapper.xml

@@ -1,68 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
-
-<mapper namespace="com.taosdata.taosdemo.mapper.TableMapper">
-
-    <!-- 创建普通表 -->
-    <update id="create" parameterType="com.taosdata.taosdemo.domain.TableMeta">
-        create table if not exists ${database}.${name}
-        <foreach collection="fields" item="field" index="index" open="(" close=")" separator=",">
-            ${field.name} ${field.type}
-        </foreach>
-    </update>
-
-    <!-- 插入：向一张普通表中插入多条数据 -->
-    <insert id="insertOneTableMultiValues" parameterType="com.taosdata.taosdemo.domain.TableValue">
-        insert into ${database}.${name} values
-        <foreach collection="values" item="value">
-            <foreach collection="value.fields" item="field" open="(" close=")" separator=",">
-                ${field.value}
-            </foreach>
-        </foreach>
-    </insert>
-
-    <!-- 向一张表中插入指定列的数据 insert into XXX.xx (f1,f2,f3...) values(v1,v2,v3...) -->
-    <insert id="insertOneTableMultiValuesWithColumns" parameterType="com.taosdata.taosdemo.domain.TableValue">
-        insert into ${database}.${name}
-        <foreach collection="columns" item="column" open="(" close=")" separator=",">
-            ${column.name}
-        </foreach>
-        values
-        <foreach collection="values" item="value">
-            <foreach collection="value.fields" item="field" open="(" close=")" separator=",">
-                ${field.value}
-            </foreach>
-        </foreach>
-    </insert>
-
-    <!-- 向多个表中插入多条数据 -->
-    <insert id="insertMultiTableMultiValues">
-        insert into
-        <foreach collection="tables" item="table">
-            ${table.database}.${table.name} values
-            <foreach collection="table.values" item="value">
-                <foreach collection="value.fields" item="field" open="(" close=")" separator=",">
-                    ${field.value}
-                </foreach>
-            </foreach>
-        </foreach>
-    </insert>
-
-    <!-- 向多张表中指定的列插入多条数据 -->
-    <insert id="insertMultiTableMultiValuesWithColumns">
-        insert into
-        <foreach collection="tables" item="table">
-            ${table.database}.${table.name}
-            <foreach collection="table.columns" item="column" open="(" close=")" separator=",">
-                ${column.name}
-            </foreach>
-            values
-            <foreach collection="table.values" item="value">
-                <foreach collection="value.fields" item="field" open="(" close=")" separator=",">
-                    ${field.value}
-                </foreach>
-            </foreach>
-        </foreach>
-    </insert>
-
-</mapper>

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/DatabaseService.java

@@ -1,38 +1,42 @@
 package com.taosdata.taosdemo.service;
 
-import com.taosdata.taosdemo.mapper.DatabaseMapper;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
+import com.taosdata.taosdemo.dao.DatabaseMapper;
+import com.taosdata.taosdemo.dao.DatabaseMapperImpl;
 
+import javax.sql.DataSource;
 import java.util.Map;
 
-@Service
 public class DatabaseService {
 
-    @Autowired
-    private DatabaseMapper databaseMapper;
+    private final DatabaseMapper databaseMapper;
+
+    public DatabaseService(DataSource dataSource) {
+        this.databaseMapper = new DatabaseMapperImpl(dataSource);
+    }
 
     // 建库，指定 name
-    public int createDatabase(String database) {
-        return databaseMapper.createDatabase(database);
+    public void createDatabase(String database) {
+        databaseMapper.createDatabase(database);
     }
 
     // 建库，指定参数 keep,days,replica等
-    public int createDatabase(Map<String, String> map) {
+    public void createDatabase(Map<String, String> map) {
         if (map.isEmpty())
-            return 0;
-        if (map.containsKey("database") && map.size() == 1)
-            return databaseMapper.createDatabase(map.get("database"));
-        return databaseMapper.createDatabaseWithParameters(map);
+            return;
+        if (map.containsKey("database") && map.size() == 1) {
+            createDatabase(map.get("database"));
+            return;
+        }
+        databaseMapper.createDatabaseWithParameters(map);
     }
 
     // drop database
-    public int dropDatabase(String dbname) {
-        return databaseMapper.dropDatabase(dbname);
+    public void dropDatabase(String dbname) {
+        databaseMapper.dropDatabase(dbname);
     }
 
     // use database
-    public int useDatabase(String dbname) {
-        return databaseMapper.useDatabase(dbname);
+    public void useDatabase(String dbname) {
+        databaseMapper.useDatabase(dbname);
     }
 }

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/SubTableService.java

@@ -1,68 +1,63 @@
 package com.taosdata.taosdemo.service;
 
+import com.taosdata.taosdemo.components.JdbcTaosdemoConfig;
+import com.taosdata.taosdemo.dao.SubTableMapper;
+import com.taosdata.taosdemo.dao.SubTableMapperImpl;
 import com.taosdata.taosdemo.domain.SubTableMeta;
 import com.taosdata.taosdemo.domain.SubTableValue;
-import com.taosdata.taosdemo.mapper.SubTableMapper;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
+import com.taosdata.taosdemo.domain.SuperTableMeta;
+import com.taosdata.taosdemo.service.data.SubTableMetaGenerator;
+import com.taosdata.taosdemo.service.data.SubTableValueGenerator;
+import org.apache.log4j.Logger;
 
+import javax.sql.DataSource;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.Future;
+import java.util.concurrent.*;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
 
-@Service
 public class SubTableService extends AbstractService {
 
-    @Autowired
     private SubTableMapper mapper;
+    private static final Logger logger = Logger.getLogger(SubTableService.class);
 
-    /**
-     * 1. 选择database，找到所有supertable
-     * 2. 选择supertable，可以拿到表结构，包括field和tag
-     * 3. 指定子表的前缀和个数
-     * 4. 指定创建子表的线程数
-     */
-    //TODO：指定database、supertable、子表前缀、子表个数、线程数
+    public SubTableService(DataSource datasource) {
+        this.mapper = new SubTableMapperImpl(datasource);
+    }
 
-    // 多线程创建表，指定线程个数
-    public int createSubTable(List<SubTableMeta> subTables, int threadSize) {
-        ExecutorService executor = Executors.newFixedThreadPool(threadSize);
-        List<Future<Integer>> futureList = new ArrayList<>();
-        for (SubTableMeta subTableMeta : subTables) {
-            Future<Integer> future = executor.submit(() -> createSubTable(subTableMeta));
-            futureList.add(future);
+    public void createSubTable(SuperTableMeta superTableMeta, long numOfTables, String prefixOfTable, int numOfThreadsForCreate) {
+        ExecutorService executor = Executors.newFixedThreadPool(numOfThreadsForCreate);
+        for (long i = 0; i < numOfTables; i++) {
+            long tableIndex = i;
+            executor.execute(() -> createSubTable(superTableMeta, prefixOfTable + (tableIndex + 1)));
         }
         executor.shutdown();
-        return getAffectRows(futureList);
+        try {
+            executor.awaitTermination(Long.MAX_VALUE,TimeUnit.NANOSECONDS);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
     }
 
+    public void createSubTable(SuperTableMeta superTableMeta, String tableName) {
+        // 构造数据
+        SubTableMeta meta = SubTableMetaGenerator.generate(superTableMeta, tableName);
+        createSubTable(meta);
+    }
 
     // 创建一张子表，可以指定database，supertable，tablename，tag值
-    public int createSubTable(SubTableMeta subTableMeta) {
-        return mapper.createUsingSuperTable(subTableMeta);
-    }
-
-    // 单线程创建多张子表，每张子表分别可以指定自己的database，supertable，tablename，tag值
-    public int createSubTable(List<SubTableMeta> subTables) {
-        return createSubTable(subTables, 1);
+    public void createSubTable(SubTableMeta subTableMeta) {
+        mapper.createUsingSuperTable(subTableMeta);
     }
 
     /*************************************************************************************************************************/
     // 插入：多线程，多表
-    public int insert(List<SubTableValue> subTableValues, int threadSize) {
+    public int insert(List<SubTableValue> subTableValues, int threadSize, int frequency) {
         ExecutorService executor = Executors.newFixedThreadPool(threadSize);
         Future<Integer> future = executor.submit(() -> insert(subTableValues));
         executor.shutdown();
-        return getAffectRows(future);
-    }
-
-    // 插入：多线程，多表, 自动建表
-    public int insertAutoCreateTable(List<SubTableValue> subTableValues, int threadSize) {
-        ExecutorService executor = Executors.newFixedThreadPool(threadSize);
-        Future<Integer> future = executor.submit(() -> insertAutoCreateTable(subTableValues));
-        executor.shutdown();
+        //TODO：frequency
         return getAffectRows(future);
     }
 
@@ -73,7 +68,7 @@ public class SubTableService extends AbstractService {
 
     // 插入: 多表，insert into xxx values(),()... xxx values(),()...
     public int insert(List<SubTableValue> subTableValues) {
-        return mapper.insertMultiTableMultiValuesUsingSuperTable(subTableValues);
+        return mapper.insertMultiTableMultiValues(subTableValues);
     }
 
     // 插入：单表，自动建表, insert into xxx using xxx tags(...) values(),()...
@@ -86,33 +81,128 @@ public class SubTableService extends AbstractService {
         return mapper.insertMultiTableMultiValuesUsingSuperTable(subTableValues);
     }
 
+    public int insertMultiThreads(SuperTableMeta superTableMeta, int threadSize, long tableSize, long startTime, long gap, JdbcTaosdemoConfig config) {
+        List<FutureTask> taskList = new ArrayList<>();
+        List<Thread> threads = IntStream.range(0, threadSize)
+                .mapToObj(i -> {
+                    long startInd = i * gap;
+                    long endInd = (i + 1) * gap < tableSize ? (i + 1) * gap : tableSize;
+                    FutureTask<Integer> task = new FutureTask<>(
+                            new InsertTask(superTableMeta,
+                                    startInd, endInd,
+                                    startTime, config.timeGap,
+                                    config.numOfRowsPerTable, config.numOfTablesPerSQL, config.numOfValuesPerSQL,
+                                    config.order, config.rate, config.range,
+                                    config.prefixOfTable, config.autoCreateTable)
+                    );
+                    taskList.add(task);
+                    return new Thread(task, "InsertThread-" + i);
+                }).collect(Collectors.toList());
 
-//        ExecutorService executors = Executors.newFixedThreadPool(threadSize);
-//        int count = 0;
-//
-//        //
-//        List<SubTableValue> subTableValues = new ArrayList<>();
-//        for (int tableIndex = 1; tableIndex <= numOfTablesPerSQL; tableIndex++) {
-//            // each table
-//            SubTableValue subTableValue = new SubTableValue();
-//            subTableValue.setDatabase();
-//            subTableValue.setName();
-//            subTableValue.setSupertable();
-//
-//            List<RowValue> values = new ArrayList<>();
-//            for (int valueCnt = 0; valueCnt < numOfValuesPerSQL; valueCnt++) {
-//                List<FieldValue> fields = new ArrayList<>();
-//                for (int fieldInd = 0; fieldInd <; fieldInd++) {
-//                    FieldValue<Object> field = new FieldValue<>("", "");
-//                    fields.add(field);
-//                }
-//                RowValue row = new RowValue();
-//                row.setFields(fields);
-//                values.add(row);
-//            }
-//            subTableValue.setValues(values);
-//            subTableValues.add(subTableValue);
-//        }
+        threads.stream().forEach(Thread::start);
+        for (Thread thread : threads) {
+            try {
+                thread.join();
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+
+        int affectedRows = 0;
+        for (FutureTask<Integer> task : taskList) {
+            try {
+                affectedRows += task.get();
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            } catch (ExecutionException e) {
+                e.printStackTrace();
+            }
+        }
+
+        return affectedRows;
+    }
+
+    private class InsertTask implements Callable<Integer> {
+
+        private final long startTableInd; // included
+        private final long endTableInd;   // excluded
+        private final long startTime;
+        private final long timeGap;
+        private final long numOfRowsPerTable;
+        private long numOfTablesPerSQL;
+        private long numOfValuesPerSQL;
+        private final SuperTableMeta superTableMeta;
+        private final int order;
+        private final int rate;
+        private final long range;
+        private final String prefixOfTable;
+        private final boolean autoCreateTable;
+
+        public InsertTask(SuperTableMeta superTableMeta, long startTableInd, long endTableInd,
+                          long startTime, long timeGap,
+                          long numOfRowsPerTable, long numOfTablesPerSQL, long numOfValuesPerSQL,
+                          int order, int rate, long range,
+                          String prefixOfTable, boolean autoCreateTable) {
+            this.superTableMeta = superTableMeta;
+            this.startTableInd = startTableInd;
+            this.endTableInd = endTableInd;
+            this.startTime = startTime;
+            this.timeGap = timeGap;
+            this.numOfRowsPerTable = numOfRowsPerTable;
+            this.numOfTablesPerSQL = numOfTablesPerSQL;
+            this.numOfValuesPerSQL = numOfValuesPerSQL;
+            this.order = order;
+            this.rate = rate;
+            this.range = range;
+            this.prefixOfTable = prefixOfTable;
+            this.autoCreateTable = autoCreateTable;
+        }
+
+
+        @Override
+        public Integer call() {
+
+            long numOfTables = endTableInd - startTableInd;
+            if (numOfRowsPerTable < numOfValuesPerSQL)
+                numOfValuesPerSQL = (int) numOfRowsPerTable;
+            if (numOfTables < numOfTablesPerSQL)
+                numOfTablesPerSQL = (int) numOfTables;
+
+            int affectRows = 0;
+            // row
+            for (long rowCnt = 0; rowCnt < numOfRowsPerTable; ) {
+                long rowSize = numOfValuesPerSQL;
+                if (rowCnt + rowSize > numOfRowsPerTable) {
+                    rowSize = numOfRowsPerTable - rowCnt;
+                }
+                //table
+                for (long tableCnt = startTableInd; tableCnt < endTableInd; ) {
+                    long tableSize = numOfTablesPerSQL;
+                    if (tableCnt + tableSize > endTableInd) {
+                        tableSize = endTableInd - tableCnt;
+                    }
+                    long startTime = this.startTime + rowCnt * timeGap;
+//                    System.out.println(Thread.currentThread().getName() + " >>> " + "rowCnt: " + rowCnt + ", rowSize: " + rowSize + ", " + "tableCnt: " + tableCnt + ",tableSize: " + tableSize + ", " + "startTime: " + startTime + ",timeGap: " + timeGap + "");
+                    /***********************************************/
+                    // 生成数据
+                    List<SubTableValue> data = SubTableValueGenerator.generate(superTableMeta, prefixOfTable, tableCnt, tableSize, rowSize, startTime, timeGap);
+                    // 乱序
+                    if (order != 0)
+                        SubTableValueGenerator.disrupt(data, rate, range);
+                    // insert
+                    if (autoCreateTable)
+                        affectRows += insertAutoCreateTable(data);
+                    else
+                        affectRows += insert(data);
+                    /***********************************************/
+                    tableCnt += tableSize;
+                }
+                rowCnt += rowSize;
+            }
+
+            return affectRows;
+        }
+    }
 
 
 }

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/SuperTableService.java

@@ -1,19 +1,22 @@
 package com.taosdata.taosdemo.service;
 
+import com.taosdata.taosdemo.dao.SuperTableMapper;
+import com.taosdata.taosdemo.dao.SuperTableMapperImpl;
 import com.taosdata.taosdemo.domain.SuperTableMeta;
-import com.taosdata.taosdemo.mapper.SuperTableMapper;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
 
-@Service
+import javax.sql.DataSource;
+
 public class SuperTableService {
 
-    @Autowired
     private SuperTableMapper superTableMapper;
 
+    public SuperTableService(DataSource dataSource) {
+        this.superTableMapper = new SuperTableMapperImpl(dataSource);
+    }
+
     // 创建超级表，指定每个field的名称和类型，每个tag的名称和类型
-    public int create(SuperTableMeta superTableMeta) {
-        return superTableMapper.createSuperTable(superTableMeta);
+    public void create(SuperTableMeta superTableMeta) {
+        superTableMapper.createSuperTable(superTableMeta);
     }
 
     public void drop(String database, String name) {

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/TableService.java

@@ -1,41 +1,25 @@
 package com.taosdata.taosdemo.service;
 
+import com.taosdata.taosdemo.dao.TableMapper;
 import com.taosdata.taosdemo.domain.TableMeta;
-import com.taosdata.taosdemo.mapper.TableMapper;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
-import java.util.ArrayList;
 import java.util.List;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.Future;
 
 @Service
 public class TableService extends AbstractService {
 
-    @Autowired
     private TableMapper tableMapper;
 
     //创建一张表
-    public int create(TableMeta tableMeta) {
-        return tableMapper.create(tableMeta);
+    public void create(TableMeta tableMeta) {
+        tableMapper.create(tableMeta);
     }
 
     //创建多张表
-    public int create(List<TableMeta> tables) {
-        return create(tables, 1);
-    }
-
-    //多线程创建多张表
-    public int create(List<TableMeta> tables, int threadSize) {
-        ExecutorService executors = Executors.newFixedThreadPool(threadSize);
-        List<Future<Integer>> futures = new ArrayList<>();
-        for (TableMeta table : tables) {
-            Future<Integer> future = executors.submit(() -> create(table));
-            futures.add(future);
-        }
-        return getAffectRows(futures);
+    public void create(List<TableMeta> tables) {
+        tables.stream().forEach(this::create);
     }
 
 

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/data/SubTableMetaGenerator.java

@@ -27,4 +27,16 @@ public class SubTableMetaGenerator {
         return subTableMetaList;
     }
 
+    public static SubTableMeta generate(SuperTableMeta superTableMeta, String tableName) {
+        SubTableMeta subTableMeta = new SubTableMeta();
+        // create table xxx.xxx using xxx tags(...)
+        subTableMeta.setDatabase(superTableMeta.getDatabase());
+        subTableMeta.setName(tableName);
+        subTableMeta.setSupertable(superTableMeta.getName());
+        subTableMeta.setFields(superTableMeta.getFields());
+        List<TagValue> tagValues = TagValueGenerator.generate(superTableMeta.getTags());
+        subTableMeta.setTags(tagValues);
+        return subTableMeta;
+    }
+
 }

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/data/SubTableValueGenerator.java

@@ -1,8 +1,6 @@
 package com.taosdata.taosdemo.service.data;
 
-import com.taosdata.taosdemo.domain.RowValue;
-import com.taosdata.taosdemo.domain.SubTableMeta;
-import com.taosdata.taosdemo.domain.SubTableValue;
+import com.taosdata.taosdemo.domain.*;
 import com.taosdata.taosdemo.utils.TimeStampUtil;
 import org.springframework.beans.BeanUtils;
 
@@ -11,22 +9,26 @@ import java.util.List;
 
 public class SubTableValueGenerator {
 
-    public static List<SubTableValue> generate(List<SubTableMeta> subTableMetaList, int numOfRowsPerTable, long start, long timeGap) {
-        List<SubTableValue> subTableValueList = new ArrayList<>();
-
-        subTableMetaList.stream().forEach((subTableMeta) -> {
-            // insert into xxx.xxx using xxxx tags(...) values(),()...
+    public static List<SubTableValue> generate(SuperTableMeta superTableMeta, String prefixOfTables, long tableIndex, long tableSize, long valueSize, long startTime, long timeGap) {
+        List<SubTableValue> subTableValues = new ArrayList<>();
+        for (int i = 1; i <= tableSize; i++) {
             SubTableValue subTableValue = new SubTableValue();
-            subTableValue.setDatabase(subTableMeta.getDatabase());
-            subTableValue.setName(subTableMeta.getName());
-            subTableValue.setSupertable(subTableMeta.getSupertable());
-            subTableValue.setTags(subTableMeta.getTags());
-            TimeStampUtil.TimeTuple tuple = TimeStampUtil.range(start, timeGap, numOfRowsPerTable);
-            List<RowValue> values = FieldValueGenerator.generate(tuple.start, tuple.end, tuple.timeGap, subTableMeta.getFields());
+            subTableValue.setDatabase(superTableMeta.getDatabase());
+            subTableValue.setName(prefixOfTables + (tableIndex + i));
+            subTableValue.setSupertable(superTableMeta.getName());
+            TimeStampUtil.TimeTuple tuple = TimeStampUtil.range(startTime, timeGap, valueSize);
+            List<TagValue> tags = TagValueGenerator.generate(superTableMeta.getTags());
+            subTableValue.setTags(tags);
+            List<RowValue> values = FieldValueGenerator.generate(tuple.start, tuple.end, tuple.timeGap, superTableMeta.getFields());
             subTableValue.setValues(values);
-            subTableValueList.add(subTableValue);
-        });
-        return subTableValueList;
+
+            subTableValues.add(subTableValue);
+        }
+        return subTableValues;
+    }
+
+    public static List<SubTableValue> generate(List<SubTableMeta> subTableMetaList, int numOfRowsPerTable, long start, long timeGap) {
+        return generate(subTableMetaList, 0, subTableMetaList.size(), numOfRowsPerTable, start, timeGap);
     }
 
     public static void disrupt(List<SubTableValue> subTableValueList, int rate, long range) {
@@ -38,12 +40,10 @@ public class SubTableValueGenerator {
 
     public static List<List<SubTableValue>> split(List<SubTableValue> subTableValueList, int numOfTables, int numOfTablesPerSQL, int numOfRowsPerTable, int numOfValuesPerSQL) {
         List<List<SubTableValue>> dataList = new ArrayList<>();
-
         if (numOfRowsPerTable < numOfValuesPerSQL)
             numOfValuesPerSQL = numOfRowsPerTable;
         if (numOfTables < numOfTablesPerSQL)
             numOfTablesPerSQL = numOfTables;
-
         //table
         for (int tableCnt = 0; tableCnt < numOfTables; ) {
             int tableSize = numOfTablesPerSQL;
@@ -81,4 +81,20 @@ public class SubTableValueGenerator {
         split(null, 99, 10, 99, 10);
     }
 
+    public static List<SubTableValue> generate(List<SubTableMeta> subTableMetaList, int tableCnt, int tableSize, int rowSize, long startTime, long timeGap) {
+        List<SubTableValue> subTableValueList = new ArrayList<>();
+        for (int i = 0; i < tableSize; i++) {
+            SubTableMeta subTableMeta = subTableMetaList.get(tableCnt + i);
+            SubTableValue subTableValue = new SubTableValue();
+            subTableValue.setDatabase(subTableMeta.getDatabase());
+            subTableValue.setName(subTableMeta.getName());
+            subTableValue.setSupertable(subTableMeta.getSupertable());
+            subTableValue.setTags(subTableMeta.getTags());
+            TimeStampUtil.TimeTuple tuple = TimeStampUtil.range(startTime, timeGap, rowSize);
+            List<RowValue> values = FieldValueGenerator.generate(tuple.start, tuple.end, tuple.timeGap, subTableMeta.getFields());
+            subTableValue.setValues(values);
+            subTableValueList.add(subTableValue);
+        }
+        return subTableValueList;
+    }
 }

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/utils/SqlSpeller.java

@@ -0,0 +1,194 @@
+package com.taosdata.taosdemo.utils;
+
+import com.taosdata.taosdemo.domain.*;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+public class SqlSpeller {
+
+    // create database if not exists xxx keep xx days xx replica xx cache xx...
+    public static String createDatabase(Map<String, String> map) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("create database if not exists ").append(map.get("database")).append(" ");
+        if (map.containsKey("keep"))
+            sb.append("keep ").append(map.get("keep")).append(" ");
+        if (map.containsKey("days"))
+            sb.append("days ").append(map.get("days")).append(" ");
+        if (map.containsKey("replica"))
+            sb.append("replica ").append(map.get("replica")).append(" ");
+        if (map.containsKey("cache"))
+            sb.append("cache ").append(map.get("cache")).append(" ");
+        if (map.containsKey("blocks"))
+            sb.append("blocks ").append(map.get("blocks")).append(" ");
+        if (map.containsKey("minrows"))
+            sb.append("minrows ").append(map.get("minrows")).append(" ");
+        if (map.containsKey("maxrows"))
+            sb.append("maxrows ").append(map.get("maxrows")).append(" ");
+        if (map.containsKey("precision"))
+            sb.append("precision ").append(map.get("precision")).append(" ");
+        if (map.containsKey("comp"))
+            sb.append("comp ").append(map.get("comp")).append(" ");
+        if (map.containsKey("walLevel"))
+            sb.append("walLevel ").append(map.get("walLevel")).append(" ");
+        if (map.containsKey("quorum"))
+            sb.append("quorum ").append(map.get("quorum")).append(" ");
+        if (map.containsKey("fsync"))
+            sb.append("fsync ").append(map.get("fsync")).append(" ");
+        if (map.containsKey("update"))
+            sb.append("update ").append(map.get("update")).append(" ");
+        return sb.toString();
+    }
+
+    // create table if not exists xx.xx using xx.xx tags(x,x,x)
+    public static String createTableUsingSuperTable(SubTableMeta subTableMeta) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("create table if not exists ").append(subTableMeta.getDatabase()).append(".").append(subTableMeta.getName()).append(" ");
+        sb.append("using ").append(subTableMeta.getDatabase()).append(".").append(subTableMeta.getSupertable()).append(" ");
+//        String tagStr = subTableMeta.getTags().stream().filter(Objects::nonNull)
+//                .map(tagValue -> tagValue.getName() + " '" + tagValue.getValue() + "' ")
+//                .collect(Collectors.joining(",", "(", ")"));
+        sb.append("tags ").append(tagValues(subTableMeta.getTags()));
+        return sb.toString();
+    }
+
+    // insert into xx.xxx values(x,x,x),(x,x,x)...
+    public static String insertOneTableMultiValues(SubTableValue subTableValue) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("insert into ").append(subTableValue.getDatabase()).append(".").append(subTableValue.getName() + " ");
+        sb.append("values").append(rowValues(subTableValue.getValues()));
+        return sb.toString();
+    }
+
+    //f1, f2, f3
+    private static String fieldValues(List<FieldValue> fields) {
+        return IntStream.range(0, fields.size()).mapToObj(i -> {
+            if (i == 0) {
+                return "" + fields.get(i).getValue() + "";
+            } else {
+                return "'" + fields.get(i).getValue() + "'";
+            }
+        }).collect(Collectors.joining(",", "(", ")"));
+
+//        return fields.stream()
+//                .filter(Objects::nonNull)
+//                .map(fieldValue -> "'" + fieldValue.getValue() + "'")
+//                .collect(Collectors.joining(",", "(", ")"));
+    }
+
+    //(f1, f2, f3),(f1, f2, f3)
+    private static String rowValues(List<RowValue> rowValues) {
+        return rowValues.stream().filter(Objects::nonNull)
+                .map(rowValue -> fieldValues(rowValue.getFields()))
+                .collect(Collectors.joining(",", "", ""));
+    }
+
+    // insert into xx.xxx using xx.xx tags(x,x,x) values(x,x,x),(x,x,x)...
+    public static String insertOneTableMultiValuesUsingSuperTable(SubTableValue subTableValue) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("insert into ").append(subTableValue.getDatabase()).append(".").append(subTableValue.getName()).append(" ");
+        sb.append("using ").append(subTableValue.getDatabase()).append(".").append(subTableValue.getSupertable()).append(" ");
+        sb.append("tags ").append(tagValues(subTableValue.getTags()) + " ");
+        sb.append("values ").append(rowValues(subTableValue.getValues()));
+        return sb.toString();
+    }
+
+    // (t1,t2,t3...)
+    private static String tagValues(List<TagValue> tags) {
+        return tags.stream().filter(Objects::nonNull)
+                .map(tagValue -> "'" + tagValue.getValue() + "'")
+                .collect(Collectors.joining(",", "(", ")"));
+    }
+
+    // insert into xx.xx values(),(),()... xx.xx values(),()...
+    public static String insertMultiSubTableMultiValues(List<SubTableValue> tables) {
+        return "insert into " + tables.stream().filter(Objects::nonNull)
+                .map(table -> table.getDatabase() + "." + table.getName() + " values " + rowValues(table.getValues()))
+                .collect(Collectors.joining(" ", "", ""));
+    }
+
+    // insert into xx.xx using xx.xx tags(xx,xx) values(),()...
+    public static String insertMultiTableMultiValuesUsingSuperTable(List<SubTableValue> tables) {
+        return "insert into " + tables.stream().filter(Objects::nonNull)
+                .map(table -> {
+                    StringBuilder sb = new StringBuilder();
+                    sb.append(table.getDatabase()).append(".").append(table.getName());
+                    sb.append(" using ").append(table.getDatabase()).append(".").append(table.getSupertable());
+                    sb.append(" tags ").append(tagValues(table.getTags()));
+                    sb.append(" values ").append(rowValues(table.getValues()));
+                    return sb.toString();
+                }).collect(Collectors.joining(" "));
+    }
+
+    // create table if not exists xx.xx (f1 xx,f2 xx...) tags(t1 xx, t2 xx...)
+    public static String createSuperTable(SuperTableMeta tableMetadata) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("create table if not exists ").append(tableMetadata.getDatabase()).append(".").append(tableMetadata.getName());
+        String fields = tableMetadata.getFields().stream()
+                .filter(Objects::nonNull).map(field -> field.getName() + " " + field.getType() + " ")
+                .collect(Collectors.joining(",", "(", ")"));
+        sb.append(fields);
+        sb.append(" tags ");
+        String tags = tableMetadata.getTags().stream().filter(Objects::nonNull)
+                .map(tag -> tag.getName() + " " + tag.getType() + " ")
+                .collect(Collectors.joining(",", "(", ")"));
+        sb.append(tags);
+        return sb.toString();
+    }
+
+
+    public static String createTable(TableMeta tableMeta) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("create table if not exists ").append(tableMeta.getDatabase()).append(".").append(tableMeta.getName()).append(" ");
+        String fields = tableMeta.getFields().stream()
+                .filter(Objects::nonNull).map(field -> field.getName() + " " + field.getType() + " ")
+                .collect(Collectors.joining(",", "(", ")"));
+        sb.append(fields);
+        return sb.toString();
+    }
+
+    // insert into xx.xx values()
+    public static String insertOneTableMultiValues(TableValue table) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("insert into ").append(table.getDatabase()).append(".").append(table.getName() + " ");
+        sb.append("values").append(rowValues(table.getValues()));
+        return sb.toString();
+
+    }
+
+    // insert into xx.xx (f1, f2, f3...) values(xx,xx,xx),(xx,xx,xx)...
+    public static String insertOneTableMultiValuesWithColumns(TableValue table) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("insert into ").append(table.getDatabase()).append(".").append(table.getName()).append(" ");
+        sb.append(columnNames(table.getColumns()));
+        sb.append(" values ").append(rowValues(table.getValues()));
+        return sb.toString();
+    }
+
+    // (f1, f2, f3...)
+    private static String columnNames(List<FieldMeta> fields) {
+        return fields.stream()
+                .filter(Objects::nonNull)
+                .map(column -> column.getName() + " ")
+                .collect(Collectors.joining(",", "(", ")"));
+    }
+
+    public static String insertMultiTableMultiValuesWithColumns(List<TableValue> tables) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("insert into ").append(tables.stream().filter(Objects::nonNull)
+                .map(table -> table.getDatabase() + "." + table.getName() + " " + columnNames(table.getColumns()) + " values " + rowValues(table.getValues()))
+                .collect(Collectors.joining(" ")));
+        return sb.toString();
+    }
+
+    public static String insertMultiTableMultiValues(List<TableValue> tables) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("insert into ").append(tables.stream().filter(Objects::nonNull).map(table ->
+                table.getDatabase() + "." + table.getName() + " values " + rowValues(table.getValues())
+        ).collect(Collectors.joining(" ")));
+        return sb.toString();
+    }
+}

tests/examples/JDBC/taosdemo/src/main/resources/application.properties

@@ -1,14 +1,5 @@
-#spring.datasource.url=jdbc:mysql://master:3306/?useSSL=false&useUnicode=true&characterEncoding=UTF-8
-#spring.datasource.driver-class-name=com.mysql.jdbc.Driver
-#spring.datasource.username=root
-#spring.datasource.password=123456
-
-spring.datasource.url=jdbc:TAOS://master:6030/?charset=UTF-8&locale=en_US.UTF-8&timezone=UTC-8
-spring.datasource.driver-class-name=com.taosdata.jdbc.TSDBDriver
-spring.datasource.username=root
-spring.datasource.password=taosdata
-
-spring.datasource.hikari.maximum-pool-size=10
-spring.datasource.hikari.minimum-idle=10
-spring.datasource.hikari.max-lifetime=600000
-logging.level.com.taosdata.taosdemo.mapper=debug
+jdbc.driver=com.taosdata.jdbc.rs.RestfulDriver
+#jdbc.driver=com.taosdata.jdbc.TSDBDriver
+hikari.maximum-pool-size=1
+hikari.minimum-idle=1
+hikari.max-lifetime=0

tests/examples/JDBC/taosdemo/src/main/resources/insert.json

@@ -0,0 +1,119 @@
+{
+  "filetype": "insert",
+  "cfgdir": "/etc/taos",
+  "host": "127.0.0.1",
+  "port": 6030,
+  "user": "root",
+  "password": "taosdata",
+  "thread_count": 2,
+  "databases": [
+    {
+      "dbinfo": {
+        "name": "db04",
+        "drop": "no",
+        "replica": 1,
+        "days": 2,
+        "cache": 16,
+        "blocks": 8,
+        "precision": "ms",
+        "keep": 365,
+        "minRows": 100,
+        "maxRows": 4096,
+        "comp": 2,
+        "walLevel": 1,
+        "quorum": 1,
+        "fsync": 3000,
+        "update": 0
+      },
+      "super_tables": [
+        {
+          "name": "stb04",
+          "child_table_exists": "no",
+          "childtable_count": 10,
+          "childtable_prefix": "stb01_",
+          "auto_create_table": "no",
+          "data_source": "rand",
+          "insert_mode": "taosc",
+          "insert_rate": 0,
+          "insert_rows": 100,
+          "multi_thread_write_one_tbl": "no",
+          "number_of_tbl_in_one_sql": 0,
+          "rows_per_tbl": 3,
+          "max_sql_len": 1024,
+          "disorder_ratio": 0,
+          "disorder_range": 1000,
+          "timestamp_step": 10,
+          "start_timestamp": "2020-10-01 00:00:00.000",
+          "sample_format": "csv",
+          "sample_file": "./sample.csv",
+          "tags_file": "",
+          "columns": [
+            {
+              "type": "TINYINT"
+            },
+            {
+              "type": "SMALLINT"
+            },
+            {
+              "type": "INT"
+            },
+            {
+              "type": "BIGINT"
+            },
+            {
+              "type": "BOOL"
+            },
+            {
+              "type": "FLOAT"
+            },
+            {
+              "type": "DOUBLE"
+            },
+            {
+              "type": "TIMESTAMP"
+            },
+            {
+              "type": "BINARY",
+              "len": 16
+            },
+            {
+              "type": "NCHAR",
+              "len": 4
+            }
+          ],
+          "tags": [
+            {
+              "type": "TINYINT"
+            },
+            {
+              "type": "SMALLINT"
+            },
+            {
+              "type": "INT"
+            },
+            {
+              "type": "BIGINT"
+            },
+            {
+              "type": "BOOL"
+            },
+            {
+              "type": "FLOAT"
+            },
+            {
+              "type": "DOUBLE"
+            },
+            {
+              "type": "BINARY",
+              "len": 16
+            },
+            {
+              "type": "NCHAR",
+              "len": 4
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}

tests/examples/JDBC/taosdemo/src/main/resources/log4j.properties

@@ -1,5 +1,5 @@
 ### 设置###
-log4j.rootLogger=debug,stdout,DebugLog,ErrorLog
+log4j.rootLogger=error,stdout
 ### 输出信息到控制抬 ###
 log4j.appender.stdout=org.apache.log4j.ConsoleAppender
 log4j.appender.stdout.Target=System.out

tests/examples/JDBC/taosdemo/src/main/resources/query.json

@@ -0,0 +1,17 @@
+{
+  "filetype":"query",
+  "cfgdir": "/etc/taos",
+  "host": "127.0.0.1",
+  "port": 6030,
+  "user": "root",
+  "password": "taosdata",
+  "databases": "db01",
+  "super_table_query":
+    {"rate":1, "concurrent":1,
+     "sqls": [{"sql": "select count(*) from stb01", "result": "./query_res0.txt"}]
+    },
+  "sub_table_query": 
+    {"stblname": "stb01", "rate":1, "threads":1,
+		 "sqls": [{"sql": "select count(*) from xxxx", "result": "./query_res1.txt"}]
+    }
+}

tests/examples/JDBC/taosdemo/src/main/resources/templates/index.html

@@ -5,6 +5,6 @@
     <title>Index</title>
 </head>
 <body>
-<h1>Hello~~~</h1>
+<h1>Developing~~~</h1>
 </body>
 </html>

tests/examples/JDBC/taosdemo/src/test/java/com/taosdata/taosdemo/TaosdemoApplicationTests.java

@@ -1,13 +0,0 @@
-package com.taosdata.taosdemo;
-
-import org.junit.jupiter.api.Test;
-import org.springframework.boot.test.context.SpringBootTest;
-
-@SpringBootTest
-class TaosdemoApplicationTests {
-
-    @Test
-    void contextLoads() {
-    }
-
-}

tests/examples/JDBC/taosdemo/src/test/java/com/taosdata/taosdemo/mapper/DatabaseMapperTest.java

@@ -1,42 +0,0 @@
-package com.taosdata.taosdemo.mapper;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
-
-import java.util.HashMap;
-import java.util.Map;
-
-@RunWith(SpringRunner.class)
-@SpringBootTest
-public class DatabaseMapperTest {
-    @Autowired
-    private DatabaseMapper databaseMapper;
-
-    @Test
-    public void createDatabase() {
-        databaseMapper.createDatabase("db_test");
-    }
-
-    @Test
-    public void dropDatabase() {
-        databaseMapper.dropDatabase("db_test");
-    }
-
-    @Test
-    public void creatDatabaseWithParameters() {
-        Map<String, String> map = new HashMap<>();
-        map.put("dbname", "weather");
-        map.put("keep", "3650");
-        map.put("days", "30");
-        map.put("replica", "1");
-        databaseMapper.createDatabaseWithParameters(map);
-    }
-
-    @Test
-    public void useDatabase() {
-        databaseMapper.useDatabase("test");
-    }
-}

tests/examples/JDBC/taosdemo/src/test/java/com/taosdata/taosdemo/mapper/SubTableMapperTest.java

@@ -1,88 +0,0 @@
-package com.taosdata.taosdemo.mapper;
-
-import com.taosdata.taosdemo.domain.*;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
-
-import java.util.ArrayList;
-import java.util.List;
-
-@RunWith(SpringRunner.class)
-@SpringBootTest
-public class SubTableMapperTest {
-    @Autowired
-    private SubTableMapper subTableMapper;
-    private List<SubTableValue> tables;
-
-    @Test
-    public void createUsingSuperTable() {
-        SubTableMeta subTableMeta = new SubTableMeta();
-        subTableMeta.setDatabase("test");
-        subTableMeta.setSupertable("weather");
-        subTableMeta.setName("t1");
-        List<TagValue> tags = new ArrayList<>();
-        for (int i = 0; i < 3; i++) {
-            tags.add(new TagValue("tag" + (i + 1), "nchar(64)"));
-        }
-        subTableMeta.setTags(tags);
-        subTableMapper.createUsingSuperTable(subTableMeta);
-    }
-
-    @Test
-    public void insertOneTableMultiValues() {
-        subTableMapper.insertOneTableMultiValues(tables.get(0));
-    }
-
-    @Test
-    public void insertOneTableMultiValuesUsingSuperTable() {
-        subTableMapper.insertOneTableMultiValuesUsingSuperTable(tables.get(0));
-    }
-
-
-    @Test
-    public void insertMultiTableMultiValues() {
-        subTableMapper.insertMultiTableMultiValues(tables);
-    }
-
-    @Test
-    public void insertMultiTableMultiValuesUsingSuperTable() {
-        subTableMapper.insertMultiTableMultiValuesUsingSuperTable(tables);
-    }
-
-
-    @Before
-    public void before() {
-        tables = new ArrayList<>();
-        for (int ind = 0; ind < 3; ind++) {
-
-            SubTableValue table = new SubTableValue();
-            table.setDatabase("test");
-            // supertable
-            table.setSupertable("weather");
-            table.setName("t" + (ind + 1));
-            // tags
-            List<TagValue> tags = new ArrayList<>();
-            for (int i = 0; i < 3; i++) {
-                tags.add(new TagValue("tag" + (i + 1), "beijing"));
-            }
-            table.setTags(tags);
-            // values
-            List<RowValue> values = new ArrayList<>();
-            for (int i = 0; i < 2; i++) {
-                List<FieldValue> fields = new ArrayList<>();
-                for (int j = 0; j < 4; j++) {
-                    fields.add(new FieldValue("f" + (j + 1), (j + 1) * 10));
-                }
-                values.add(new RowValue(fields));
-            }
-            table.setValues(values);
-
-            tables.add(table);
-        }
-    }
-
-}

tests/examples/JDBC/taosdemo/src/test/java/com/taosdata/taosdemo/mapper/SuperTableMapperTest.java

@@ -1,50 +0,0 @@
-package com.taosdata.taosdemo.mapper;
-
-import com.taosdata.taosdemo.domain.FieldMeta;
-import com.taosdata.taosdemo.domain.SuperTableMeta;
-import com.taosdata.taosdemo.domain.TagMeta;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
-
-import java.util.ArrayList;
-import java.util.List;
-
-@RunWith(SpringRunner.class)
-@SpringBootTest
-public class SuperTableMapperTest {
-    @Autowired
-    private SuperTableMapper superTableMapper;
-
-    @Test
-    public void testCreateSuperTableUsingSQL() {
-        String sql = "create table test.weather (ts timestamp, temperature float, humidity int) tags(location nchar(64), groupId int)";
-        superTableMapper.createSuperTableUsingSQL(sql);
-    }
-
-    @Test
-    public void createSuperTable() {
-        SuperTableMeta superTableMeta = new SuperTableMeta();
-        superTableMeta.setDatabase("test");
-        superTableMeta.setName("weather");
-        List<FieldMeta> fields = new ArrayList<>();
-        for (int i = 0; i < 5; i++) {
-            fields.add(new FieldMeta("f" + (i + 1), "int"));
-        }
-        superTableMeta.setFields(fields);
-        List<TagMeta> tags = new ArrayList<>();
-        for (int i = 0; i < 3; i++) {
-            tags.add(new TagMeta("t" + (i + 1), "nchar(64)"));
-        }
-        superTableMeta.setTags(tags);
-
-        superTableMapper.createSuperTable(superTableMeta);
-    }
-
-    @Test
-    public void dropSuperTable() {
-        superTableMapper.dropSuperTable("test", "weather");
-    }
-}

tests/examples/JDBC/taosdemo/src/test/java/com/taosdata/taosdemo/mapper/TableMapperTest.java

@@ -1,142 +0,0 @@
-package com.taosdata.taosdemo.mapper;
-
-import com.taosdata.taosdemo.domain.*;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Random;
-
-@SpringBootTest
-@RunWith(SpringRunner.class)
-public class TableMapperTest {
-    @Autowired
-    private TableMapper tableMapper;
-    private static Random random = new Random(System.currentTimeMillis());
-
-    @Test
-    public void create() {
-        TableMeta table = new TableMeta();
-        table.setDatabase("test");
-        table.setName("t1");
-        List<FieldMeta> fields = new ArrayList<>();
-        for (int i = 0; i < 3; i++) {
-            FieldMeta field = new FieldMeta();
-            field.setName("f" + (i + 1));
-            field.setType("nchar(64)");
-            fields.add(field);
-        }
-        table.setFields(fields);
-        tableMapper.create(table);
-    }
-
-    @Test
-    public void insertOneTableMultiValues() {
-        TableValue table = new TableValue();
-        table.setDatabase("test");
-        table.setName("t1");
-        List<RowValue> values = new ArrayList<>();
-        for (int j = 0; j < 5; j++) {
-            List<FieldValue> fields = new ArrayList<>();
-            for (int k = 0; k < 2; k++) {
-                FieldValue field = new FieldValue<>();
-                field.setValue((k + 1) * 100);
-                fields.add(field);
-            }
-            values.add(new RowValue(fields));
-        }
-        table.setValues(values);
-
-        tableMapper.insertOneTableMultiValues(table);
-    }
-
-    @Test
-    public void insertOneTableMultiValuesWithCoulmns() {
-        TableValue tableValue = new TableValue();
-        tableValue.setDatabase("test");
-        tableValue.setName("weather");
-        // columns
-        List<FieldMeta> columns = new ArrayList<>();
-        for (int i = 0; i < 3; i++) {
-            FieldMeta field = new FieldMeta();
-            field.setName("f" + (i + 1));
-            columns.add(field);
-        }
-        tableValue.setColumns(columns);
-        // values
-        List<RowValue> values = new ArrayList<>();
-        for (int i = 0; i < 3; i++) {
-            List<FieldValue> fields = new ArrayList<>();
-            for (int j = 0; j < 3; j++) {
-                FieldValue field = new FieldValue();
-                field.setValue(j);
-                fields.add(field);
-            }
-            values.add(new RowValue(fields));
-        }
-        tableValue.setValues(values);
-        tableMapper.insertOneTableMultiValuesWithColumns(tableValue);
-    }
-
-    @Test
-    public void insertMultiTableMultiValues() {
-        List<TableValue> tables = new ArrayList<>();
-        for (int i = 0; i < 3; i++) {
-            TableValue table = new TableValue();
-            table.setDatabase("test");
-            table.setName("t" + (i + 1));
-            List<RowValue> values = new ArrayList<>();
-            for (int j = 0; j < 5; j++) {
-                List<FieldValue> fields = new ArrayList<>();
-                for (int k = 0; k < 2; k++) {
-                    FieldValue field = new FieldValue<>();
-                    field.setValue((k + 1) * 10);
-                    fields.add(field);
-                }
-                values.add(new RowValue(fields));
-            }
-            table.setValues(values);
-
-            tables.add(table);
-        }
-        tableMapper.insertMultiTableMultiValues(tables);
-    }
-
-    @Test
-    public void insertMultiTableMultiValuesWithCoulumns() {
-        List<TableValue> tables = new ArrayList<>();
-        for (int i = 0; i < 3; i++) {
-            TableValue table = new TableValue();
-            table.setDatabase("test");
-            table.setName("t" + (i + 1));
-            // columns
-            List<FieldMeta> columns = new ArrayList<>();
-            for (int j = 0; j < 3; j++) {
-                FieldMeta field = new FieldMeta();
-                field.setName("f" + (j + 1));
-                columns.add(field);
-            }
-            table.setColumns(columns);
-            // values
-            List<RowValue> values = new ArrayList<>();
-            for (int j = 0; j < 5; j++) {
-                List<FieldValue> fields = new ArrayList<>();
-                for (int k = 0; k < columns.size(); k++) {
-                    FieldValue field = new FieldValue<>();
-                    field.setValue((k + 1) * 10);
-                    fields.add(field);
-                }
-                values.add(new RowValue(fields));
-            }
-            table.setValues(values);
-
-            tables.add(table);
-        }
-        tableMapper.insertMultiTableMultiValuesWithColumns(tables);
-    }
-
-}

tests/examples/JDBC/taosdemo/src/test/java/com/taosdata/taosdemo/service/DatabaseServiceTest.java

@@ -1,15 +1,9 @@
 package com.taosdata.taosdemo.service;
 
 import org.junit.Test;
-import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
 
-@RunWith(SpringRunner.class)
-@SpringBootTest
 public class DatabaseServiceTest {
-    @Autowired
     private DatabaseService service;
 
     @Test

tests/examples/JDBC/taosdemo/src/test/java/com/taosdata/taosdemo/service/SubTableServiceTest.java

@@ -4,18 +4,12 @@ import com.taosdata.taosdemo.domain.SubTableMeta;
 import com.taosdata.taosdemo.domain.TagValue;
 import org.junit.Before;
 import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
 
 import java.util.ArrayList;
 import java.util.List;
 
-@RunWith(SpringRunner.class)
-@SpringBootTest
 public class SubTableServiceTest {
-    @Autowired
+
     private SubTableService service;
 
     private List<SubTableMeta> subTables;
@@ -38,13 +32,11 @@ public class SubTableServiceTest {
 
     @Test
     public void testCreateSubTable() {
-        int count = service.createSubTable(subTables);
-        System.out.println("count >>> " + count);
+
     }
 
     @Test
     public void testCreateSubTableList() {
-        int count = service.createSubTable(subTables, 10);
-        System.out.println("count >>> " + count);
+
     }
 }

tests/examples/JDBC/taosdemo/src/test/java/com/taosdata/taosdemo/service/SuperTableServiceTest.java

@@ -4,19 +4,12 @@ import com.taosdata.taosdemo.domain.FieldMeta;
 import com.taosdata.taosdemo.domain.SuperTableMeta;
 import com.taosdata.taosdemo.domain.TagMeta;
 import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
 
 import java.util.ArrayList;
 import java.util.List;
 
-@RunWith(SpringRunner.class)
-@SpringBootTest
 public class SuperTableServiceTest {
 
-    @Autowired
     private SuperTableService service;
 
     @Test

tests/examples/JDBC/taosdemo/src/test/java/com/taosdata/taosdemo/service/TableServiceTest.java

@@ -3,18 +3,11 @@ package com.taosdata.taosdemo.service;
 import com.taosdata.taosdemo.domain.TableMeta;
 import org.junit.Before;
 import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
 
 import java.util.ArrayList;
 import java.util.List;
 
-@RunWith(SpringRunner.class)
-@SpringBootTest
 public class TableServiceTest {
-    @Autowired
     private TableService tableService;
 
     private List<TableMeta> tables;
@@ -32,12 +25,7 @@ public class TableServiceTest {
 
     @Test
     public void testCreate() {
-        int count = tableService.create(tables);
-        System.out.println(count);
+        tableService.create(tables);
     }
 
-    @Test
-    public void testCreateMultiThreads() {
-        System.out.println(tableService.create(tables, 10));
-    }
 }

tests/examples/JDBC/taosdemo/src/test/java/com/taosdata/taosdemo/utils/SqlSpellerTest.java

@@ -0,0 +1,254 @@
+package com.taosdata.taosdemo.utils;
+
+import com.taosdata.taosdemo.domain.*;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+public class SqlSpellerTest {
+
+    @Test
+    public void createDatabase() {
+        HashMap<String, String> map = new HashMap<>();
+        map.put("database", "jdbcdb");
+        map.put("keep", "3650");
+        map.put("days", "30");
+        map.put("replica", "1");
+        map.put("minRows", "100");
+        map.put("maxRows", "1000");
+        map.put("cache", "16");
+        map.put("blocks", "8");
+        map.put("precision", "ms");
+        map.put("comp", "2");
+        map.put("walLevel", "1");
+        map.put("quorum", "1");
+        map.put("fsync", "3000");
+        map.put("update", "0");
+        String sql = SqlSpeller.createDatabase(map);
+        System.out.println(sql);
+    }
+
+    @Test
+    public void createTableUsingSuperTable() {
+        SubTableMeta subTableMeta = new SubTableMeta();
+        subTableMeta.setDatabase("test");
+        subTableMeta.setSupertable("weather");
+        subTableMeta.setName("t1");
+        List<TagValue> tags = new ArrayList<>();
+        for (int i = 0; i < 3; i++) {
+            tags.add(new TagValue("tag" + (i + 1), "nchar(64)"));
+        }
+        subTableMeta.setTags(tags);
+        String sql = SqlSpeller.createTableUsingSuperTable(subTableMeta);
+        System.out.println(sql);
+    }
+
+    @Test
+    public void insertOneTableMultiValues() {
+        String sql = SqlSpeller.insertOneTableMultiValues(tables.get(0));
+        System.out.println(sql);
+    }
+
+    @Test
+    public void insertOneTableMultiValuesUsingSuperTable() {
+        String sql = SqlSpeller.insertOneTableMultiValuesUsingSuperTable(tables.get(0));
+        System.out.println(sql);
+    }
+
+    @Test
+    public void insertMultiTableMultiValues() {
+        String sql = SqlSpeller.insertMultiSubTableMultiValues(tables);
+        System.out.println(sql);
+    }
+
+    @Test
+    public void insertMultiTableMultiValuesUsingSuperTable() {
+        String sql = SqlSpeller.insertMultiTableMultiValuesUsingSuperTable(tables);
+        System.out.println(sql);
+    }
+
+    private List<SubTableValue> tables;
+
+    @Before
+    public void before() {
+        tables = new ArrayList<>();
+        for (int ind = 0; ind < 3; ind++) {
+            SubTableValue table = new SubTableValue();
+            table.setDatabase("test");
+            // supertable
+            table.setSupertable("weather");
+            table.setName("t" + (ind + 1));
+            // tags
+            List<TagValue> tags = new ArrayList<>();
+            for (int i = 0; i < 3; i++) {
+                tags.add(new TagValue("tag" + (i + 1), "beijing"));
+            }
+            table.setTags(tags);
+            // values
+            List<RowValue> values = new ArrayList<>();
+            for (int i = 0; i < 2; i++) {
+                List<FieldValue> fields = new ArrayList<>();
+                for (int j = 0; j < 4; j++) {
+                    fields.add(new FieldValue("f" + (j + 1), (j + 1) * 10));
+                }
+                values.add(new RowValue(fields));
+            }
+            table.setValues(values);
+
+            tables.add(table);
+        }
+    }
+
+    @Test
+    public void createSuperTable() {
+        SuperTableMeta superTableMeta = new SuperTableMeta();
+        superTableMeta.setDatabase("test");
+        superTableMeta.setName("weather");
+        List<FieldMeta> fields = new ArrayList<>();
+        for (int i = 0; i < 5; i++) {
+            fields.add(new FieldMeta("f" + (i + 1), "int"));
+        }
+        superTableMeta.setFields(fields);
+        List<TagMeta> tags = new ArrayList<>();
+        for (int i = 0; i < 3; i++) {
+            tags.add(new TagMeta("t" + (i + 1), "nchar(64)"));
+        }
+        superTableMeta.setTags(tags);
+
+        String sql = SqlSpeller.createSuperTable(superTableMeta);
+        System.out.println(sql);
+    }
+
+    @Test
+    public void createTable() {
+        TableMeta table = new TableMeta();
+        table.setDatabase("test");
+        table.setName("t1");
+        List<FieldMeta> fields = new ArrayList<>();
+        for (int i = 0; i < 3; i++) {
+            FieldMeta field = new FieldMeta();
+            field.setName("f" + (i + 1));
+            field.setType("nchar(64)");
+            fields.add(field);
+        }
+        table.setFields(fields);
+        String sql = SqlSpeller.createTable(table);
+        System.out.println(sql);
+    }
+
+
+    @Test
+    public void testInsertOneTableMultiValues() {
+        TableValue table = new TableValue();
+        table.setDatabase("test");
+        table.setName("t1");
+        List<RowValue> values = new ArrayList<>();
+        for (int j = 0; j < 5; j++) {
+            List<FieldValue> fields = new ArrayList<>();
+            for (int k = 0; k < 2; k++) {
+                FieldValue field = new FieldValue<>();
+                field.setValue((k + 1) * 100);
+                fields.add(field);
+            }
+            values.add(new RowValue(fields));
+        }
+        table.setValues(values);
+
+        String sql = SqlSpeller.insertOneTableMultiValues(table);
+        System.out.println(sql);
+    }
+
+    @Test
+    public void insertOneTableMultiValuesWithColumns() {
+        TableValue tableValue = new TableValue();
+        tableValue.setDatabase("test");
+        tableValue.setName("weather");
+        // columns
+        List<FieldMeta> columns = new ArrayList<>();
+        for (int i = 0; i < 3; i++) {
+            FieldMeta field = new FieldMeta();
+            field.setName("f" + (i + 1));
+            columns.add(field);
+        }
+        tableValue.setColumns(columns);
+        // values
+        List<RowValue> values = new ArrayList<>();
+        for (int i = 0; i < 3; i++) {
+            List<FieldValue> fields = new ArrayList<>();
+            for (int j = 0; j < 3; j++) {
+                FieldValue field = new FieldValue();
+                field.setValue(j);
+                fields.add(field);
+            }
+            values.add(new RowValue(fields));
+        }
+        tableValue.setValues(values);
+
+        String sql = SqlSpeller.insertOneTableMultiValuesWithColumns(tableValue);
+        System.out.println(sql);
+    }
+
+    @Test
+    public void insertMultiTableMultiValuesWithColumns() {
+        List<TableValue> tables = new ArrayList<>();
+        for (int i = 0; i < 3; i++) {
+            TableValue table = new TableValue();
+            table.setDatabase("test");
+            table.setName("t" + (i + 1));
+            // columns
+            List<FieldMeta> columns = new ArrayList<>();
+            for (int j = 0; j < 3; j++) {
+                FieldMeta field = new FieldMeta();
+                field.setName("f" + (j + 1));
+                columns.add(field);
+            }
+            table.setColumns(columns);
+            // values
+            List<RowValue> values = new ArrayList<>();
+            for (int j = 0; j < 5; j++) {
+                List<FieldValue> fields = new ArrayList<>();
+                for (int k = 0; k < columns.size(); k++) {
+                    FieldValue field = new FieldValue<>();
+                    field.setValue((k + 1) * 10);
+                    fields.add(field);
+                }
+                values.add(new RowValue(fields));
+            }
+            table.setValues(values);
+            tables.add(table);
+        }
+
+        String sql = SqlSpeller.insertMultiTableMultiValuesWithColumns(tables);
+        System.out.println(sql);
+    }
+
+    @Test
+    public void testInsertMultiTableMultiValues() {
+        List<TableValue> tables = new ArrayList<>();
+        for (int i = 0; i < 3; i++) {
+            TableValue table = new TableValue();
+            table.setDatabase("test");
+            table.setName("t" + (i + 1));
+            List<RowValue> values = new ArrayList<>();
+            for (int j = 0; j < 5; j++) {
+                List<FieldValue> fields = new ArrayList<>();
+                for (int k = 0; k < 2; k++) {
+                    FieldValue field = new FieldValue<>();
+                    field.setValue((k + 1) * 10);
+                    fields.add(field);
+                }
+                values.add(new RowValue(fields));
+            }
+            table.setValues(values);
+
+            tables.add(table);
+        }
+
+        String sql = SqlSpeller.insertMultiTableMultiValues(tables);
+        System.out.println(sql);
+    }
+
+}

tests/examples/JDBC/taosdemo/src/test/java/com/taosdata/taosdemo/utils/TimeStampUtilTest.java

@@ -17,6 +17,8 @@ public class TimeStampUtilTest {
 
     @Test
     public void longToDatetime() {
+        System.out.println(TimeStampUtil.longToDatetime(1293334499006l));
+
         String datetime = TimeStampUtil.longToDatetime(1510000000000L);
         assertEquals("2017-11-07 04:26:40.000", datetime);
         long timestamp = TimeStampUtil.datetimeToLong(datetime);

tests/pytest/functions/function_first.py

@@ -111,6 +111,10 @@ class TDTestCase:
         tdSql.checkRows(1)
         tdSql.checkData(0, 0, '涛思数据1')
         
+        # TD-2607 first,last + where none exist condition + interval
+        tdSql.query("select first(*),last(*) from test1 where ts < 23 interval(1s)")
+        tdSql.checkRows(0)
+                
     def stop(self):
         tdSql.close()
         tdLog.success("%s successfully executed" % __file__)

tests/pytest/handle_crash_gen_val_log.sh

@@ -16,7 +16,7 @@ TOP_DIR=`pwd`
 TAOSD_DIR=`find . -name "taosd"|grep -v community|head -n1`
 nohup $TAOSD_DIR >/dev/null &
 cd -
-./crash_gen.sh --valgrind -p -t 10 -s 250 -b 4
+./crash_gen.sh --valgrind -p -t 10 -s 350 -b 4
 pidof taosd|xargs kill -9
 grep 'start to execute\|ERROR SUMMARY' valgrind.err|grep -v 'grep'|uniq|tee crash_gen_mem_err.log
 
@@ -36,7 +36,11 @@ for defiMemError in `grep 'definitely lost:' crash_gen-definitely-lost-out.log |
 do
 defiMemError=(${defiMemError//,/})
 if [ -n "$defiMemError" ]; then
-    if [ "$defiMemError" -gt 3 ]; then
+    if [ "$defiMemError" -gt 3 -a "$defiMemError" -lt 1013 ]; then
+    echo -e "${RED} ## Memory errors number valgrind reports \
+                Definitely lost is $defiMemError. More than our threshold! ## ${NC}"
+      exit 8
+    elif [ "$defiMemError" -gt 1013 ];then           #add for azure
       echo -e "${RED} ## Memory errors number valgrind reports \
                 Definitely lost is $defiMemError. More than our threshold! ## ${NC}"
       exit 8

tests/pytest/tools/lowaTest.py

@@ -51,7 +51,7 @@ class TDTestCase:
         else:
             tdLog.info("taosd found in %s" % buildPath)
         binPath = buildPath+ "/build/bin/"
-        os.system("yes | %slowa -f tools/insert.json" % binPath)
+        os.system("yes | %staosdemox -f tools/insert.json" % binPath)
 
         tdSql.execute("use db01")
         tdSql.query("select count(*) from stb01")

tests/pytest/util/dnodes.py

@@ -291,8 +291,8 @@ class TDDnode:
                     break
             tdLog.debug("the dnode:%d has been started." % (self.index))
         else:
-            tdLog.debug("wait 5 seconds for the dnode:%d to start." % (self.index))
-            time.sleep(5)
+            tdLog.debug("wait 10 seconds for the dnode:%d to start." % (self.index))
+            time.sleep(10)
 
         
         # time.sleep(5)