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[TD-2271]feature: support Connection and Statement count statistics in JMX

This commit is contained in:
zyyang 2021-01-21 14:07:47 +08:00
parent e588cca505
commit c332ce99f3
5 changed files with 401 additions and 1028 deletions
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73
src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractDatabaseMetaData.java
View File

@ -1,28 +1,13 @@
/***************************************************************************
* 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 {
public abstract class AbstractDatabaseMetaData implements DatabaseMetaData, Wrapper {
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;
@ -67,9 +52,7 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
return PRODUCT_VESION;
}
public String getDriverName() throws SQLException {
return DRIVER_NAME;
}
public abstract String getDriverName() throws SQLException;
public String getDriverVersion() throws SQLException {
return DRIVER_VERSION;
@ -92,6 +75,7 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
}
public boolean supportsMixedCaseIdentifiers() throws SQLException {
//像database、table这些对象的标识符，在存储时是否采用大小写混合的模式
return false;
}
@ -168,10 +152,12 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
}
public boolean nullPlusNonNullIsNull() throws SQLException {
// null + non-null != null
return false;
}
public boolean supportsConvert() throws SQLException {
// 是否支持转换函数convert
return false;
}
@ -468,7 +454,7 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
}
public int getDefaultTransactionIsolation() throws SQLException {
return 0;
return Connection.TRANSACTION_NONE;
}
public boolean supportsTransactions() throws SQLException {
@ -476,6 +462,8 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
}
public boolean supportsTransactionIsolationLevel(int level) throws SQLException {
if (level == Connection.TRANSACTION_NONE)
return true;
return false;
}
@ -516,27 +504,26 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
public ResultSet getTableTypes() throws SQLException {
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<ColumnMetaData>(1);
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
ColumnMetaData colMetaData = new ColumnMetaData();
colMetaData.setColIndex(0);
colMetaData.setColName("TABLE_TYPE");
colMetaData.setColSize(10);
colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_BINARY);
colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(colMetaData);
resultSet.setColumnMetaDataList(columnMetaDataList);
// set up rowDataList
List<TSDBResultSetRowData> rowDataList = new ArrayList<TSDBResultSetRowData>(2);
TSDBResultSetRowData rowData = new TSDBResultSetRowData();
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
TSDBResultSetRowData rowData = new TSDBResultSetRowData(1);
rowData.setString(0, "TABLE");
rowDataList.add(rowData);
rowData = new TSDBResultSetRowData();
rowData = new TSDBResultSetRowData(1);
rowData.setString(0, "STABLE");
rowDataList.add(rowData);
resultSet.setColumnMetaDataList(columnMetaDataList);
resultSet.setRowDataList(rowDataList);
return resultSet;
}
@ -615,9 +602,7 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
return getEmptyResultSet();
}
public ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException {
return getEmptyResultSet();
}
public abstract ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException;
public ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException {
return getEmptyResultSet();
@ -718,9 +703,7 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
return getEmptyResultSet();
}
public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
return getEmptyResultSet();
}
public abstract ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException;
public ResultSet getAttributes(String catalog, String schemaPattern, String typeNamePattern,
String attributeNamePattern) throws SQLException {
@ -728,15 +711,17 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
}
public boolean supportsResultSetHoldability(int holdability) throws SQLException {
if (holdability == ResultSet.HOLD_CURSORS_OVER_COMMIT)
return true;
return false;
}
public int getResultSetHoldability() throws SQLException {
return 0;
return ResultSet.HOLD_CURSORS_OVER_COMMIT;
}
public int getDatabaseMajorVersion() throws SQLException {
return 0;
return 2;
}
public int getDatabaseMinorVersion() throws SQLException {
@ -744,7 +729,7 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
}
public int getJDBCMajorVersion() throws SQLException {
return 0;
return 2;
}
public int getJDBCMinorVersion() throws SQLException {
@ -805,4 +790,18 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData {
private ResultSet getEmptyResultSet() {
return new EmptyResultSet();
}
@Override
public <T> T unwrap(Class<T> iface) throws SQLException {
try {
return iface.cast(this);
} catch (ClassCastException cce) {
throw new SQLException("Unable to unwrap to " + iface.toString());
}
}
@Override
public boolean isWrapperFor(Class<?> iface) throws SQLException {
return iface.isInstance(this);
}
}

67
src/connector/jdbc/src/main/java/com/taosdata/jdbc/CatalogResultSet.java
View File

@ -1,67 +0,0 @@
/***************************************************************************
* 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.ResultSet;
import java.sql.SQLException;
/*
* TDengine only supports a subset of the standard SQL, thus this implemetation of the
* standard JDBC API contains more or less some adjustments customized for certain
* compatibility needs.
*/
public class CatalogResultSet extends TSDBResultSetWrapper {
public CatalogResultSet(ResultSet resultSet) {
super.setOriginalResultSet(resultSet);
}
@Override
public String getString(int columnIndex) throws SQLException {
if (columnIndex <= 1) {
return super.getString(columnIndex);
} else {
return null;
}
}
@Override
public boolean getBoolean(int columnIndex) throws SQLException {
if (columnIndex <= 1) {
return super.getBoolean(columnIndex);
} else {
return false;
}
}
@Override
public byte[] getBytes(int columnIndex) throws SQLException {
if (columnIndex <= 1) {
return super.getBytes(columnIndex);
} else {
return null;
}
}
@Override
public Object getObject(int columnIndex) throws SQLException {
if (columnIndex <= 1) {
return super.getObject(columnIndex);
} else {
return null;
}
}
}

53
src/connector/jdbc/src/main/java/com/taosdata/jdbc/GetTablesResultSet.java
View File

@ -1,53 +0,0 @@
/***************************************************************************
* 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.ResultSet;
import java.sql.SQLException;
/*
* TDengine only supports a subset of the standard SQL, thus this implemetation of the
* standard JDBC API contains more or less some adjustments customized for certain
* compatibility needs.
*/
public class GetTablesResultSet extends TSDBResultSetWrapper {
private String catalog;
private String schemaPattern;
private String tableNamePattern;
private String[] types;
public GetTablesResultSet(ResultSet resultSet, String catalog, String schemaPattern, String tableNamePattern, String[] types) {
super.setOriginalResultSet(resultSet);
this.catalog = catalog;
this.schemaPattern = schemaPattern;
this.tableNamePattern = tableNamePattern;
this.types = types;
}
@Override
public String getString(int columnIndex) throws SQLException {
String ret = null;
switch (columnIndex) {
case 3:
return super.getString(1);
case 4:
return "table";
default:
return null;
}
}
}

757
src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDatabaseMetaData.java
View File

@ -18,7 +18,7 @@ import java.sql.*;
import java.util.ArrayList;
import java.util.List;
public class TSDBDatabaseMetaData implements java.sql.DatabaseMetaData {
public class TSDBDatabaseMetaData extends AbstractDatabaseMetaData {
private String url;
private String userName;
@ -29,31 +29,14 @@ public class TSDBDatabaseMetaData implements java.sql.DatabaseMetaData {
this.userName = userName;
}
public Connection getConnection() throws SQLException {
return this.conn;
}
public void setConnection(Connection conn) {
this.conn = conn;
}
@Override
public <T> T unwrap(Class<T> iface) throws SQLException {
try {
return iface.cast(this);
} catch (ClassCastException cce) {
throw new SQLException("Unable to unwrap to " + iface.toString());
}
}
public boolean isWrapperFor(Class<?> iface) throws SQLException {
return iface.isInstance(this);
}
public boolean allProceduresAreCallable() throws SQLException {
return false;
}
public boolean allTablesAreSelectable() throws SQLException {
return false;
}
public String getURL() throws SQLException {
return this.url;
}
@ -62,479 +45,10 @@ public class TSDBDatabaseMetaData implements java.sql.DatabaseMetaData {
return this.userName;
}
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 "TDengine";
}
public String getDatabaseProductVersion() throws SQLException {
return "2.0.x.x";
}
public String getDriverName() throws SQLException {
return TSDBDriver.class.getName();
}
public String getDriverVersion() throws SQLException {
return "2.0.x";
}
public int getDriverMajorVersion() {
return 2;
}
public int getDriverMinorVersion() {
return 0;
}
public boolean usesLocalFiles() throws SQLException {
return false;
}
public boolean usesLocalFilePerTable() throws SQLException {
return false;
}
public boolean supportsMixedCaseIdentifiers() throws SQLException {
//像database、table这些对象的标识符，在存储时是否采用大小写混合的模式
return false;
}
public boolean storesUpperCaseIdentifiers() throws SQLException {
return false;
}
public boolean storesLowerCaseIdentifiers() throws SQLException {
return true;
}
public boolean storesMixedCaseIdentifiers() throws SQLException {
return false;
}
public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException {
//像database、table这些对象的标识符，在存储时是否采用大小写混合、并带引号的模式
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 {
// null + non-null != null
return false;
}
public boolean supportsConvert() throws SQLException {
// 是否支持转换函数convert
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 true;
}
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 Connection.TRANSACTION_NONE;
}
public boolean supportsTransactions() throws SQLException {
return false;
}
public boolean supportsTransactionIsolationLevel(int level) throws SQLException {
if (level == Connection.TRANSACTION_NONE)
return true;
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 {
return null;
}
public ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern,
String columnNamePattern) throws SQLException {
return null;
}
/**
* @Param catalog : database名称，"" 表示不属于任何database的table，null表示不使用database来缩小范围
* @Param schemaPattern : schema名称，""表示
@ -641,10 +155,6 @@ public class TSDBDatabaseMetaData implements java.sql.DatabaseMetaData {
}
}
public ResultSet getSchemas() throws SQLException {
return getEmptyResultSet();
}
public ResultSet getCatalogs() throws SQLException {
if (conn == null || conn.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
@ -837,79 +347,6 @@ public class TSDBDatabaseMetaData implements java.sql.DatabaseMetaData {
return null;
}
private int getNullable(int index, String typeName) {
if (index == 0 && "TIMESTAMP".equals(typeName))
return DatabaseMetaData.columnNoNulls;
return DatabaseMetaData.columnNullable;
}
private int getColumnSize(String typeName, int length) {
switch (typeName) {
case "TIMESTAMP":
return 23;
default:
return 0;
}
}
private int getDecimalDigits(String typeName) {
switch (typeName) {
case "FLOAT":
return 5;
case "DOUBLE":
return 9;
default:
return 0;
}
}
private 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 {
if (conn == null || conn.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
@ -989,105 +426,6 @@ public class TSDBDatabaseMetaData implements java.sql.DatabaseMetaData {
}
}
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 this.conn;
}
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 {
@ -1152,89 +490,4 @@ public class TSDBDatabaseMetaData implements java.sql.DatabaseMetaData {
}
}
public ResultSet getAttributes(String catalog, String schemaPattern, String typeNamePattern,
String attributeNamePattern) throws SQLException {
return getEmptyResultSet();
}
public boolean supportsResultSetHoldability(int holdability) throws SQLException {
if (holdability == ResultSet.HOLD_CURSORS_OVER_COMMIT)
return true;
return false;
}
public int getResultSetHoldability() throws SQLException {
return ResultSet.HOLD_CURSORS_OVER_COMMIT;
}
public int getDatabaseMajorVersion() throws SQLException {
return 2;
}
public int getDatabaseMinorVersion() throws SQLException {
return 0;
}
public int getJDBCMajorVersion() throws SQLException {
return 2;
}
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();
}
}

477
src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDatabaseMetaData.java
View File

@ -29,141 +29,256 @@ public class RestfulDatabaseMetaData extends AbstractDatabaseMetaData {
}
@Override
public String getSchemaTerm() throws SQLException {
return null;
}
@Override
public String getProcedureTerm() throws SQLException {
return null;
}
@Override
public String getCatalogTerm() throws SQLException {
return null;
}
@Override
public boolean isCatalogAtStart() throws SQLException {
return false;
public String getDriverName() throws SQLException {
return RestfulDriver.class.getName();
}
@Override
public ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types) throws SQLException {
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 {
if (connection == null || connection.isClosed()) {
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
}
try (Statement stmt = connection.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(2);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(3);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(4);
col4.setColName("TABLE_TYPE");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(5);
col5.setColName("REMARKS");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col5);
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(6);
col6.setColName("TYPE_CAT");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
ColumnMetaData col7 = new ColumnMetaData();
col7.setColIndex(7);
col7.setColName("TYPE_SCHEM");
col7.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col7);
ColumnMetaData col8 = new ColumnMetaData();
col8.setColIndex(8);
col8.setColName("TYPE_NAME");
col8.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col8);
ColumnMetaData col9 = new ColumnMetaData();
col9.setColIndex(9);
col9.setColName("SELF_REFERENCING_COL_NAME");
col9.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col9);
ColumnMetaData col10 = new ColumnMetaData();
col10.setColIndex(10);
col10.setColName("REF_GENERATION");
col10.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col10);
resultSet.setColumnMetaDataList(columnMetaDataList);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet tables = stmt.executeQuery("show tables");
while (tables.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(10);
rowData.setString(0, dbname);
rowData.setString(2, tables.getString("table_name"));
rowData.setString(3, "TABLE");
rowData.setString(4, "");
rowDataList.add(rowData);
}
ResultSet stables = stmt.executeQuery("show stables");
while (stables.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(10);
rowData.setString(0, dbname);
rowData.setString(2, stables.getString("name"));
rowData.setString(3, "TABLE");
rowData.setString(4, "STABLE");
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
}
}
@Override
public ResultSet getCatalogs() throws SQLException {
if (connection != null && !connection.isClosed()) {
Statement stmt = connection.createStatement();
ResultSet resultSet0 = stmt.executeQuery("show databases");
CatalogResultSet resultSet = new CatalogResultSet(resultSet0);
if (connection == null || connection.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = connection.createStatement()) {
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>(24);
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
resultSet.setColumnMetaDataList(columnMetaDataList);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet rs = stmt.executeQuery("show databases");
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(1);
rowData.setString(0, rs.getString("name"));
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
} else {
return new EmptyResultSet();
}
}
@Override
public ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
Statement stmt = null;
if (null != connection && !connection.isClosed()) {
stmt = connection.createStatement();
if (catalog == null || catalog.length() < 1) {
catalog = connection.getCatalog();
}
stmt.execute("use " + catalog);
if (connection == null || connection.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = connection.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>(24);
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(2);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(3);
col3.setColName("TABLE_NAME");
col3.setColSize(193);
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// COLUMN_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(4);
col4.setColName("COLUMN_NAME");
col4.setColSize(65);
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
// DATA_TYPE
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(5);
col5.setColName("DATA_TYPE");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col5);
// TYPE_NAME
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(6);
col6.setColName("TYPE_NAME");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
// COLUMN_SIZE
ColumnMetaData col7 = new ColumnMetaData();
col7.setColIndex(7);
col7.setColName("COLUMN_SIZE");
col7.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col7);
// BUFFER_LENGTH ,not used
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);
// DECIMAL_DIGITS
ColumnMetaData col9 = new ColumnMetaData();
col9.setColIndex(9);
col9.setColName("DECIMAL_DIGITS");
col9.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col9);
// 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);
ColumnMetaData col10 = new ColumnMetaData();
col10.setColIndex(10);
col10.setColName("NUM_PREC_RADIX");
col10.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col10);
// NULLABLE
ColumnMetaData col11 = new ColumnMetaData();
col11.setColIndex(11);
col11.setColName("NULLABLE");
col11.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col11);
// REMARKS
ColumnMetaData col12 = new ColumnMetaData();
col12.setColIndex(12);
col12.setColName("REMARKS");
col12.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col12);
resultSet.setColumnMetaDataList(columnMetaDataList);
// set up rowDataList
ResultSet resultSet0 = stmt.executeQuery("describe " + tableNamePattern);
ResultSet rs = stmt.executeQuery("describe " + dbname + "." + tableNamePattern);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
int index = 0;
while (resultSet0.next()) {
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(24);
// set TABLE_CAT
rowData.setString(0, dbname);
// set TABLE_NAME
rowData.setString(2, tableNamePattern);
// set COLUMN_NAME
rowData.setString(3, resultSet0.getString(1));
rowData.setString(3, rs.getString("Field"));
// set DATA_TYPE
String typeName = resultSet0.getString(2);
String typeName = rs.getString("Type");
rowData.setInt(4, getDataType(typeName));
// set TYPE_NAME
rowData.setString(5, typeName);
// set COLUMN_SIZE
int length = resultSet0.getInt(3);
int length = rs.getInt("Length");
rowData.setInt(6, getColumnSize(typeName, length));
// set DECIMAL_DIGITS
rowData.setInt(8, getDecimalDigits(typeName));
@ -171,35 +286,161 @@ public class RestfulDatabaseMetaData extends AbstractDatabaseMetaData {
rowData.setInt(9, 10);
// set NULLABLE
rowData.setInt(10, getNullable(index, typeName));
// set REMARKS
rowData.setString(11, rs.getString("Note"));
rowDataList.add(rowData);
index++;
}
resultSet.setRowDataList(rowDataList);
return resultSet;
} else {
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
}
}
@Override
public long getMaxLogicalLobSize() throws SQLException {
return 0;
} catch (SQLException e) {
e.printStackTrace();
}
@Override
public boolean supportsRefCursors() throws SQLException {
return false;
}
@Override
public <T> T unwrap(Class<T> iface) throws SQLException {
return null;
}
@Override
public boolean isWrapperFor(Class<?> iface) throws SQLException {
return false;
public ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException {
if (connection == null || connection.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = connection.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(0);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(1);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(2);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// COLUMN_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(3);
col4.setColName("COLUMN_NAME");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
// KEY_SEQ
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(4);
col5.setColName("KEY_SEQ");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col5);
// PK_NAME
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(5);
col6.setColName("PK_NAME");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
resultSet.setColumnMetaDataList(columnMetaDataList);
// set rowData
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet rs = stmt.executeQuery("describe " + dbname + "." + table);
rs.next();
TSDBResultSetRowData rowData = new TSDBResultSetRowData(6);
rowData.setString(0, null);
rowData.setString(1, null);
rowData.setString(2, table);
String pkName = rs.getString(1);
rowData.setString(3, pkName);
rowData.setInt(4, 1);
rowData.setString(5, pkName);
rowDataList.add(rowData);
resultSet.setRowDataList(rowDataList);
return resultSet;
}
}
@Override
public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
if (connection == null || connection.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = connection.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(0);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(1);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(2);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// SUPERTABLE_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(3);
col4.setColName("SUPERTABLE_NAME");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
resultSet.setColumnMetaDataList(columnMetaDataList);
ResultSet rs = stmt.executeQuery("show tables like '" + tableNamePattern + "'");
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(4);
rowData.setString(2, rs.getString(1));
rowData.setString(3, rs.getString(4));
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
}
}
}