From c332ce99f385b1bf8a58587549539e81022e6ed8 Mon Sep 17 00:00:00 2001 From: zyyang Date: Thu, 21 Jan 2021 14:07:47 +0800 Subject: [PATCH] [TD-2271]feature: support Connection and Statement count statistics in JMX --- .../jdbc/AbstractDatabaseMetaData.java | 73 +- .../com/taosdata/jdbc/CatalogResultSet.java | 67 -- .../com/taosdata/jdbc/GetTablesResultSet.java | 53 -- .../taosdata/jdbc/TSDBDatabaseMetaData.java | 757 +----------------- .../jdbc/rs/RestfulDatabaseMetaData.java | 479 ++++++++--- 5 files changed, 401 insertions(+), 1028 deletions(-) delete mode 100644 src/connector/jdbc/src/main/java/com/taosdata/jdbc/CatalogResultSet.java delete mode 100644 src/connector/jdbc/src/main/java/com/taosdata/jdbc/GetTablesResultSet.java diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractDatabaseMetaData.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractDatabaseMetaData.java index 8ab0e4429a..27c68e54c5 100644 --- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractDatabaseMetaData.java +++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractDatabaseMetaData.java @@ -1,28 +1,13 @@ -/*************************************************************************** - * Copyright (c) 2019 TAOS Data, Inc. - * - * 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 . - *****************************************************************************/ 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 columnMetaDataList = new ArrayList(1); + List 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 rowDataList = new ArrayList(2); - TSDBResultSetRowData rowData = new TSDBResultSetRowData(); + List 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 unwrap(Class 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); + } } \ No newline at end of file diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/CatalogResultSet.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/CatalogResultSet.java deleted file mode 100644 index 3d7e6034dd..0000000000 --- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/CatalogResultSet.java +++ /dev/null @@ -1,67 +0,0 @@ -/*************************************************************************** - * Copyright (c) 2019 TAOS Data, Inc. - * - * 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 . - *****************************************************************************/ -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; - } - } - -} diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/GetTablesResultSet.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/GetTablesResultSet.java deleted file mode 100644 index e28f6e3c9a..0000000000 --- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/GetTablesResultSet.java +++ /dev/null @@ -1,53 +0,0 @@ -/*************************************************************************** - * Copyright (c) 2019 TAOS Data, Inc. - * - * 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 . - *****************************************************************************/ -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; - } - } - -} diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDatabaseMetaData.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDatabaseMetaData.java index 53f3714555..7124154682 100644 --- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDatabaseMetaData.java +++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDatabaseMetaData.java @@ -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 unwrap(Class 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(); - } } \ No newline at end of file diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDatabaseMetaData.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDatabaseMetaData.java index 3c372cc503..f9d66978c2 100644 --- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDatabaseMetaData.java +++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDatabaseMetaData.java @@ -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 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 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 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 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 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 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)); + + } catch (SQLException e) { + e.printStackTrace(); } - } - - @Override - public long getMaxLogicalLobSize() throws SQLException { - return 0; - } - - @Override - public boolean supportsRefCursors() throws SQLException { - return false; - } - - - @Override - public T unwrap(Class 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 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 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 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 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; + } + } + }