https://commons.apache.org/dbcp/: Apache Commons DBCP software implements Database Connection Pooling (The Apache Software Foundation)
  • Todd Carmichael
  • Wayne Woodfield
  • Dain Sundstrom
  • Philippe Mouawad
  • Glenn L. Nielsen
  • James House
  • James Ring
  • Peter Wicks
  • Morgan Delagrange ()
  • Geir Magnusson ()
  • Craig McClanahan ()
  • John McNally ()
  • Martin Poeschl (tucana.at)
  • Rodney Waldhoff ()
  • David Weinrich ()
  • Dirk Verbeeck ()
  • Yoav Shapira (The Apache Software Foundation)
  • Jörg Schaible ()
  • Mark Thomas (The Apache Software Foundation)
  • Gary Gregory (The Apache Software Foundation)
  • Ignacio J. Ortega
  • Sean C. Sullivan 
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.dbcp2;

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.sql.RowIdLifetime;
import java.sql.SQLException;


 A base delegating implementation of DatabaseMetaData. 


 Methods that create ResultSet objects are wrapped to create DelegatingResultSet objects and the remaining methods simply call the corresponding method on the "delegate" provided in the constructor. 


Since:2.0
/**
 * <p>
 * A base delegating implementation of {@link DatabaseMetaData}.
 * </p>
 * <p>
 * Methods that create {@link ResultSet} objects are wrapped to create {@link DelegatingResultSet} objects and the
 * remaining methods simply call the corresponding method on the "delegate" provided in the constructor.
 * </p>
 *
 * @since 2.0
 */
public class DelegatingDatabaseMetaData implements DatabaseMetaData {

    
My delegate DatabaseMetaData 
/** My delegate {@link DatabaseMetaData} */
    private final DatabaseMetaData databaseMetaData;

    
The connection that created me. 
/** The connection that created me. **/
    private final DelegatingConnection<?> connection;

    
Constructs a new instance for the given delegating connection and database meta data.

Params:
  • connection – 
           the delegating connection
  • databaseMetaData – 
           the database meta data
/**
     * Constructs a new instance for the given delegating connection and database meta data.
     *
     * @param connection
     *            the delegating connection
     * @param databaseMetaData
     *            the database meta data
     */
    public DelegatingDatabaseMetaData(final DelegatingConnection<?> connection,
            final DatabaseMetaData databaseMetaData) {
        super();
        this.connection = connection;
        this.databaseMetaData = databaseMetaData;
    }

    @Override
    public boolean allProceduresAreCallable() throws SQLException {
        try {
            return databaseMetaData.allProceduresAreCallable();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean allTablesAreSelectable() throws SQLException {
        try {
            return databaseMetaData.allTablesAreSelectable();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean autoCommitFailureClosesAllResultSets() throws SQLException {
        try {
            return databaseMetaData.autoCommitFailureClosesAllResultSets();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean dataDefinitionCausesTransactionCommit() throws SQLException {
        try {
            return databaseMetaData.dataDefinitionCausesTransactionCommit();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean dataDefinitionIgnoredInTransactions() throws SQLException {
        try {
            return databaseMetaData.dataDefinitionIgnoredInTransactions();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean deletesAreDetected(final int type) throws SQLException {
        try {
            return databaseMetaData.deletesAreDetected(type);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean doesMaxRowSizeIncludeBlobs() throws SQLException {
        try {
            return databaseMetaData.doesMaxRowSizeIncludeBlobs();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean generatedKeyAlwaysReturned() throws SQLException {
        connection.checkOpen();
        try {
            return Jdbc41Bridge.generatedKeyAlwaysReturned(databaseMetaData);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public ResultSet getAttributes(final String catalog, final String schemaPattern, final String typeNamePattern,
            final String attributeNamePattern) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getAttributes(catalog, schemaPattern, typeNamePattern, attributeNamePattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getBestRowIdentifier(final String catalog, final String schema, final String table,
            final int scope, final boolean nullable) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getBestRowIdentifier(catalog, schema, table, scope, nullable));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getCatalogs() throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection, databaseMetaData.getCatalogs());
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getCatalogSeparator() throws SQLException {
        try {
            return databaseMetaData.getCatalogSeparator();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getCatalogTerm() throws SQLException {
        try {
            return databaseMetaData.getCatalogTerm();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getClientInfoProperties() throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection, databaseMetaData.getClientInfoProperties());
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getColumnPrivileges(final String catalog, final String schema, final String table,
            final String columnNamePattern) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getColumnPrivileges(catalog, schema, table, columnNamePattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getColumns(final String catalog, final String schemaPattern, final String tableNamePattern,
            final String columnNamePattern) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getColumns(catalog, schemaPattern, tableNamePattern, columnNamePattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public Connection getConnection() throws SQLException {
        return connection;
    }

    @Override
    public ResultSet getCrossReference(final String parentCatalog, final String parentSchema, final String parentTable,
            final String foreignCatalog, final String foreignSchema, final String foreignTable) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection, databaseMetaData.getCrossReference(parentCatalog,
                    parentSchema, parentTable, foreignCatalog, foreignSchema, foreignTable));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public int getDatabaseMajorVersion() throws SQLException {
        try {
            return databaseMetaData.getDatabaseMajorVersion();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getDatabaseMinorVersion() throws SQLException {
        try {
            return databaseMetaData.getDatabaseMinorVersion();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public String getDatabaseProductName() throws SQLException {
        try {
            return databaseMetaData.getDatabaseProductName();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getDatabaseProductVersion() throws SQLException {
        try {
            return databaseMetaData.getDatabaseProductVersion();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public int getDefaultTransactionIsolation() throws SQLException {
        try {
            return databaseMetaData.getDefaultTransactionIsolation();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    
Gets the underlying database meta data.

Returns:The underlying database meta data.
/**
     * Gets the underlying database meta data.
     *
     * @return The underlying database meta data.
     */
    public DatabaseMetaData getDelegate() {
        return databaseMetaData;
    }

    @Override
    public int getDriverMajorVersion() {
        return databaseMetaData.getDriverMajorVersion();
    }

    @Override
    public int getDriverMinorVersion() {
        return databaseMetaData.getDriverMinorVersion();
    }

    @Override
    public String getDriverName() throws SQLException {
        try {
            return databaseMetaData.getDriverName();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getDriverVersion() throws SQLException {
        try {
            return databaseMetaData.getDriverVersion();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getExportedKeys(final String catalog, final String schema, final String table)
            throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getExportedKeys(catalog, schema, table));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getExtraNameCharacters() throws SQLException {
        try {
            return databaseMetaData.getExtraNameCharacters();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getFunctionColumns(final String catalog, final String schemaPattern,
            final String functionNamePattern, final String columnNamePattern) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection, databaseMetaData.getFunctionColumns(catalog,
                    schemaPattern, functionNamePattern, columnNamePattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getFunctions(final String catalog, final String schemaPattern, final String functionNamePattern)
            throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getFunctions(catalog, schemaPattern, functionNamePattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getIdentifierQuoteString() throws SQLException {
        try {
            return databaseMetaData.getIdentifierQuoteString();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getImportedKeys(final String catalog, final String schema, final String table)
            throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getImportedKeys(catalog, schema, table));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getIndexInfo(final String catalog, final String schema, final String table, final boolean unique,
            final boolean approximate) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getIndexInfo(catalog, schema, table, unique, approximate));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    
If my underlying ResultSet is not a DelegatingResultSet, returns it, otherwise recursively invokes this method on my delegate. 
 Hence this method will return the first delegate that is not a DelegatingResultSet, or null when no non-DelegatingResultSet delegate can be found by traversing this chain. 


 This method is useful when you may have nested DelegatingResultSets, and you want to make sure to obtain a "genuine" ResultSet. 


Returns:the innermost database meta data.
/**
     * If my underlying {@link ResultSet} is not a {@code DelegatingResultSet}, returns it, otherwise recursively
     * invokes this method on my delegate.
     * <p>
     * Hence this method will return the first delegate that is not a {@code DelegatingResultSet}, or {@code null} when
     * no non-{@code DelegatingResultSet} delegate can be found by traversing this chain.
     * </p>
     * <p>
     * This method is useful when you may have nested {@code DelegatingResultSet}s, and you want to make sure to obtain
     * a "genuine" {@link ResultSet}.
     * </p>
     *
     * @return the innermost database meta data.
     */
    public DatabaseMetaData getInnermostDelegate() {
        DatabaseMetaData m = databaseMetaData;
        while (m != null && m instanceof DelegatingDatabaseMetaData) {
            m = ((DelegatingDatabaseMetaData) m).getDelegate();
            if (this == m) {
                return null;
            }
        }
        return m;
    }

    @Override
    public int getJDBCMajorVersion() throws SQLException {
        try {
            return databaseMetaData.getJDBCMajorVersion();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getJDBCMinorVersion() throws SQLException {
        try {
            return databaseMetaData.getJDBCMinorVersion();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxBinaryLiteralLength() throws SQLException {
        try {
            return databaseMetaData.getMaxBinaryLiteralLength();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxCatalogNameLength() throws SQLException {
        try {
            return databaseMetaData.getMaxCatalogNameLength();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxCharLiteralLength() throws SQLException {
        try {
            return databaseMetaData.getMaxCharLiteralLength();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxColumnNameLength() throws SQLException {
        try {
            return databaseMetaData.getMaxColumnNameLength();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxColumnsInGroupBy() throws SQLException {
        try {
            return databaseMetaData.getMaxColumnsInGroupBy();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxColumnsInIndex() throws SQLException {
        try {
            return databaseMetaData.getMaxColumnsInIndex();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxColumnsInOrderBy() throws SQLException {
        try {
            return databaseMetaData.getMaxColumnsInOrderBy();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxColumnsInSelect() throws SQLException {
        try {
            return databaseMetaData.getMaxColumnsInSelect();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxColumnsInTable() throws SQLException {
        try {
            return databaseMetaData.getMaxColumnsInTable();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxConnections() throws SQLException {
        try {
            return databaseMetaData.getMaxConnections();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxCursorNameLength() throws SQLException {
        try {
            return databaseMetaData.getMaxCursorNameLength();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxIndexLength() throws SQLException {
        try {
            return databaseMetaData.getMaxIndexLength();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    
Since:2.5.0
/**
     * @since 2.5.0
     */
    @Override
    public long getMaxLogicalLobSize() throws SQLException {
        try {
            return databaseMetaData.getMaxLogicalLobSize();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxProcedureNameLength() throws SQLException {
        try {
            return databaseMetaData.getMaxProcedureNameLength();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxRowSize() throws SQLException {
        try {
            return databaseMetaData.getMaxRowSize();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxSchemaNameLength() throws SQLException {
        try {
            return databaseMetaData.getMaxSchemaNameLength();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxStatementLength() throws SQLException {
        try {
            return databaseMetaData.getMaxStatementLength();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxStatements() throws SQLException {
        try {
            return databaseMetaData.getMaxStatements();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxTableNameLength() throws SQLException {
        try {
            return databaseMetaData.getMaxTableNameLength();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxTablesInSelect() throws SQLException {
        try {
            return databaseMetaData.getMaxTablesInSelect();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public int getMaxUserNameLength() throws SQLException {
        try {
            return databaseMetaData.getMaxUserNameLength();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public String getNumericFunctions() throws SQLException {
        try {
            return databaseMetaData.getNumericFunctions();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getPrimaryKeys(final String catalog, final String schema, final String table) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getPrimaryKeys(catalog, schema, table));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getProcedureColumns(final String catalog, final String schemaPattern,
            final String procedureNamePattern, final String columnNamePattern) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection, databaseMetaData.getProcedureColumns(catalog,
                    schemaPattern, procedureNamePattern, columnNamePattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getProcedures(final String catalog, final String schemaPattern, final String procedureNamePattern)
            throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getProcedures(catalog, schemaPattern, procedureNamePattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getProcedureTerm() throws SQLException {
        try {
            return databaseMetaData.getProcedureTerm();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getPseudoColumns(final String catalog, final String schemaPattern, final String tableNamePattern,
            final String columnNamePattern) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection, Jdbc41Bridge.getPseudoColumns(databaseMetaData,
                    catalog, schemaPattern, tableNamePattern, columnNamePattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public int getResultSetHoldability() throws SQLException {
        try {
            return databaseMetaData.getResultSetHoldability();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public RowIdLifetime getRowIdLifetime() throws SQLException {
        try {
            return databaseMetaData.getRowIdLifetime();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getSchemas() throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection, databaseMetaData.getSchemas());
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getSchemas(final String catalog, final String schemaPattern) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection, databaseMetaData.getSchemas(catalog, schemaPattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getSchemaTerm() throws SQLException {
        try {
            return databaseMetaData.getSchemaTerm();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getSearchStringEscape() throws SQLException {
        try {
            return databaseMetaData.getSearchStringEscape();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getSQLKeywords() throws SQLException {
        try {
            return databaseMetaData.getSQLKeywords();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public int getSQLStateType() throws SQLException {
        try {
            return databaseMetaData.getSQLStateType();
        } catch (final SQLException e) {
            handleException(e);
            return 0;
        }
    }

    @Override
    public String getStringFunctions() throws SQLException {
        try {
            return databaseMetaData.getStringFunctions();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getSuperTables(final String catalog, final String schemaPattern, final String tableNamePattern)
            throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getSuperTables(catalog, schemaPattern, tableNamePattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getSuperTypes(final String catalog, final String schemaPattern, final String typeNamePattern)
            throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getSuperTypes(catalog, schemaPattern, typeNamePattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getSystemFunctions() throws SQLException {
        try {
            return databaseMetaData.getSystemFunctions();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getTablePrivileges(final String catalog, final String schemaPattern, final String tableNamePattern)
            throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getTablePrivileges(catalog, schemaPattern, tableNamePattern));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getTables(final String catalog, final String schemaPattern, final String tableNamePattern,
            final String[] types) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getTables(catalog, schemaPattern, tableNamePattern, types));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getTableTypes() throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection, databaseMetaData.getTableTypes());
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getTimeDateFunctions() throws SQLException {
        try {
            return databaseMetaData.getTimeDateFunctions();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getTypeInfo() throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection, databaseMetaData.getTypeInfo());
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getUDTs(final String catalog, final String schemaPattern, final String typeNamePattern,
            final int[] types) throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getUDTs(catalog, schemaPattern, typeNamePattern, types));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getURL() throws SQLException {
        try {
            return databaseMetaData.getURL();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public String getUserName() throws SQLException {
        try {
            return databaseMetaData.getUserName();
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    @Override
    public ResultSet getVersionColumns(final String catalog, final String schema, final String table)
            throws SQLException {
        connection.checkOpen();
        try {
            return DelegatingResultSet.wrapResultSet(connection,
                    databaseMetaData.getVersionColumns(catalog, schema, table));
        } catch (final SQLException e) {
            handleException(e);
            throw new AssertionError();
        }
    }

    protected void handleException(final SQLException e) throws SQLException {
        if (connection != null) {
            connection.handleException(e);
        } else {
            throw e;
        }
    }

    @Override
    public boolean insertsAreDetected(final int type) throws SQLException {
        try {
            return databaseMetaData.insertsAreDetected(type);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean isCatalogAtStart() throws SQLException {
        try {
            return databaseMetaData.isCatalogAtStart();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean isReadOnly() throws SQLException {
        try {
            return databaseMetaData.isReadOnly();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean isWrapperFor(final Class<?> iface) throws SQLException {
        if (iface.isAssignableFrom(getClass())) {
            return true;
        } else if (iface.isAssignableFrom(databaseMetaData.getClass())) {
            return true;
        } else {
            return databaseMetaData.isWrapperFor(iface);
        }
    }

    @Override
    public boolean locatorsUpdateCopy() throws SQLException {
        try {
            return databaseMetaData.locatorsUpdateCopy();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean nullPlusNonNullIsNull() throws SQLException {
        try {
            return databaseMetaData.nullPlusNonNullIsNull();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean nullsAreSortedAtEnd() throws SQLException {
        try {
            return databaseMetaData.nullsAreSortedAtEnd();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean nullsAreSortedAtStart() throws SQLException {
        try {
            return databaseMetaData.nullsAreSortedAtStart();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean nullsAreSortedHigh() throws SQLException {
        try {
            return databaseMetaData.nullsAreSortedHigh();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean nullsAreSortedLow() throws SQLException {
        try {
            return databaseMetaData.nullsAreSortedLow();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean othersDeletesAreVisible(final int type) throws SQLException {
        try {
            return databaseMetaData.othersDeletesAreVisible(type);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean othersInsertsAreVisible(final int type) throws SQLException {
        try {
            return databaseMetaData.othersInsertsAreVisible(type);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean othersUpdatesAreVisible(final int type) throws SQLException {
        try {
            return databaseMetaData.othersUpdatesAreVisible(type);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean ownDeletesAreVisible(final int type) throws SQLException {
        try {
            return databaseMetaData.ownDeletesAreVisible(type);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean ownInsertsAreVisible(final int type) throws SQLException {
        try {
            return databaseMetaData.ownInsertsAreVisible(type);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean ownUpdatesAreVisible(final int type) throws SQLException {
        try {
            return databaseMetaData.ownUpdatesAreVisible(type);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean storesLowerCaseIdentifiers() throws SQLException {
        try {
            return databaseMetaData.storesLowerCaseIdentifiers();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean storesLowerCaseQuotedIdentifiers() throws SQLException {
        try {
            return databaseMetaData.storesLowerCaseQuotedIdentifiers();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean storesMixedCaseIdentifiers() throws SQLException {
        try {
            return databaseMetaData.storesMixedCaseIdentifiers();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean storesMixedCaseQuotedIdentifiers() throws SQLException {
        try {
            return databaseMetaData.storesMixedCaseQuotedIdentifiers();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean storesUpperCaseIdentifiers() throws SQLException {
        try {
            return databaseMetaData.storesUpperCaseIdentifiers();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean storesUpperCaseQuotedIdentifiers() throws SQLException {
        try {
            return databaseMetaData.storesUpperCaseQuotedIdentifiers();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsAlterTableWithAddColumn() throws SQLException {
        try {
            return databaseMetaData.supportsAlterTableWithAddColumn();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsAlterTableWithDropColumn() throws SQLException {
        try {
            return databaseMetaData.supportsAlterTableWithDropColumn();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsANSI92EntryLevelSQL() throws SQLException {
        try {
            return databaseMetaData.supportsANSI92EntryLevelSQL();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsANSI92FullSQL() throws SQLException {
        try {
            return databaseMetaData.supportsANSI92FullSQL();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsANSI92IntermediateSQL() throws SQLException {
        try {
            return databaseMetaData.supportsANSI92IntermediateSQL();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsBatchUpdates() throws SQLException {
        try {
            return databaseMetaData.supportsBatchUpdates();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsCatalogsInDataManipulation() throws SQLException {
        try {
            return databaseMetaData.supportsCatalogsInDataManipulation();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsCatalogsInIndexDefinitions() throws SQLException {
        try {
            return databaseMetaData.supportsCatalogsInIndexDefinitions();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException {
        try {
            return databaseMetaData.supportsCatalogsInPrivilegeDefinitions();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsCatalogsInProcedureCalls() throws SQLException {
        try {
            return databaseMetaData.supportsCatalogsInProcedureCalls();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsCatalogsInTableDefinitions() throws SQLException {
        try {
            return databaseMetaData.supportsCatalogsInTableDefinitions();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsColumnAliasing() throws SQLException {
        try {
            return databaseMetaData.supportsColumnAliasing();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsConvert() throws SQLException {
        try {
            return databaseMetaData.supportsConvert();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsConvert(final int fromType, final int toType) throws SQLException {
        try {
            return databaseMetaData.supportsConvert(fromType, toType);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsCoreSQLGrammar() throws SQLException {
        try {
            return databaseMetaData.supportsCoreSQLGrammar();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsCorrelatedSubqueries() throws SQLException {
        try {
            return databaseMetaData.supportsCorrelatedSubqueries();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException {
        try {
            return databaseMetaData.supportsDataDefinitionAndDataManipulationTransactions();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsDataManipulationTransactionsOnly() throws SQLException {
        try {
            return databaseMetaData.supportsDataManipulationTransactionsOnly();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsDifferentTableCorrelationNames() throws SQLException {
        try {
            return databaseMetaData.supportsDifferentTableCorrelationNames();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsExpressionsInOrderBy() throws SQLException {
        try {
            return databaseMetaData.supportsExpressionsInOrderBy();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsExtendedSQLGrammar() throws SQLException {
        try {
            return databaseMetaData.supportsExtendedSQLGrammar();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsFullOuterJoins() throws SQLException {
        try {
            return databaseMetaData.supportsFullOuterJoins();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsGetGeneratedKeys() throws SQLException {
        try {
            return databaseMetaData.supportsGetGeneratedKeys();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsGroupBy() throws SQLException {
        try {
            return databaseMetaData.supportsGroupBy();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsGroupByBeyondSelect() throws SQLException {
        try {
            return databaseMetaData.supportsGroupByBeyondSelect();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsGroupByUnrelated() throws SQLException {
        try {
            return databaseMetaData.supportsGroupByUnrelated();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsIntegrityEnhancementFacility() throws SQLException {
        try {
            return databaseMetaData.supportsIntegrityEnhancementFacility();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsLikeEscapeClause() throws SQLException {
        try {
            return databaseMetaData.supportsLikeEscapeClause();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsLimitedOuterJoins() throws SQLException {
        try {
            return databaseMetaData.supportsLimitedOuterJoins();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsMinimumSQLGrammar() throws SQLException {
        try {
            return databaseMetaData.supportsMinimumSQLGrammar();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsMixedCaseIdentifiers() throws SQLException {
        try {
            return databaseMetaData.supportsMixedCaseIdentifiers();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException {
        try {
            return databaseMetaData.supportsMixedCaseQuotedIdentifiers();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsMultipleOpenResults() throws SQLException {
        try {
            return databaseMetaData.supportsMultipleOpenResults();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsMultipleResultSets() throws SQLException {
        try {
            return databaseMetaData.supportsMultipleResultSets();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsMultipleTransactions() throws SQLException {
        try {
            return databaseMetaData.supportsMultipleTransactions();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsNamedParameters() throws SQLException {
        try {
            return databaseMetaData.supportsNamedParameters();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsNonNullableColumns() throws SQLException {
        try {
            return databaseMetaData.supportsNonNullableColumns();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsOpenCursorsAcrossCommit() throws SQLException {
        try {
            return databaseMetaData.supportsOpenCursorsAcrossCommit();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsOpenCursorsAcrossRollback() throws SQLException {
        try {
            return databaseMetaData.supportsOpenCursorsAcrossRollback();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsOpenStatementsAcrossCommit() throws SQLException {
        try {
            return databaseMetaData.supportsOpenStatementsAcrossCommit();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsOpenStatementsAcrossRollback() throws SQLException {
        try {
            return databaseMetaData.supportsOpenStatementsAcrossRollback();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsOrderByUnrelated() throws SQLException {
        try {
            return databaseMetaData.supportsOrderByUnrelated();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsOuterJoins() throws SQLException {
        try {
            return databaseMetaData.supportsOuterJoins();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsPositionedDelete() throws SQLException {
        try {
            return databaseMetaData.supportsPositionedDelete();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsPositionedUpdate() throws SQLException {
        try {
            return databaseMetaData.supportsPositionedUpdate();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    
Since:2.5.0
/**
     * @since 2.5.0
     */
    @Override
    public boolean supportsRefCursors() throws SQLException {
        try {
            return databaseMetaData.supportsRefCursors();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsResultSetConcurrency(final int type, final int concurrency) throws SQLException {
        try {
            return databaseMetaData.supportsResultSetConcurrency(type, concurrency);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsResultSetHoldability(final int holdability) throws SQLException {
        try {
            return databaseMetaData.supportsResultSetHoldability(holdability);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsResultSetType(final int type) throws SQLException {
        try {
            return databaseMetaData.supportsResultSetType(type);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsSavepoints() throws SQLException {
        try {
            return databaseMetaData.supportsSavepoints();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsSchemasInDataManipulation() throws SQLException {
        try {
            return databaseMetaData.supportsSchemasInDataManipulation();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsSchemasInIndexDefinitions() throws SQLException {
        try {
            return databaseMetaData.supportsSchemasInIndexDefinitions();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException {
        try {
            return databaseMetaData.supportsSchemasInPrivilegeDefinitions();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsSchemasInProcedureCalls() throws SQLException {
        try {
            return databaseMetaData.supportsSchemasInProcedureCalls();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsSchemasInTableDefinitions() throws SQLException {
        try {
            return databaseMetaData.supportsSchemasInTableDefinitions();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsSelectForUpdate() throws SQLException {
        try {
            return databaseMetaData.supportsSelectForUpdate();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsStatementPooling() throws SQLException {
        try {
            return databaseMetaData.supportsStatementPooling();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException {
        try {
            return databaseMetaData.supportsStoredFunctionsUsingCallSyntax();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsStoredProcedures() throws SQLException {
        try {
            return databaseMetaData.supportsStoredProcedures();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    /* JDBC_4_ANT_KEY_BEGIN */

    @Override
    public boolean supportsSubqueriesInComparisons() throws SQLException {
        try {
            return databaseMetaData.supportsSubqueriesInComparisons();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsSubqueriesInExists() throws SQLException {
        try {
            return databaseMetaData.supportsSubqueriesInExists();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsSubqueriesInIns() throws SQLException {
        try {
            return databaseMetaData.supportsSubqueriesInIns();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsSubqueriesInQuantifieds() throws SQLException {
        try {
            return databaseMetaData.supportsSubqueriesInQuantifieds();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsTableCorrelationNames() throws SQLException {
        try {
            return databaseMetaData.supportsTableCorrelationNames();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsTransactionIsolationLevel(final int level) throws SQLException {
        try {
            return databaseMetaData.supportsTransactionIsolationLevel(level);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsTransactions() throws SQLException {
        try {
            return databaseMetaData.supportsTransactions();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsUnion() throws SQLException {
        try {
            return databaseMetaData.supportsUnion();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean supportsUnionAll() throws SQLException {
        try {
            return databaseMetaData.supportsUnionAll();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    /* JDBC_4_ANT_KEY_END */

    @Override
    public <T> T unwrap(final Class<T> iface) throws SQLException {
        if (iface.isAssignableFrom(getClass())) {
            return iface.cast(this);
        } else if (iface.isAssignableFrom(databaseMetaData.getClass())) {
            return iface.cast(databaseMetaData);
        } else {
            return databaseMetaData.unwrap(iface);
        }
    }

    @Override
    public boolean updatesAreDetected(final int type) throws SQLException {
        try {
            return databaseMetaData.updatesAreDetected(type);
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean usesLocalFilePerTable() throws SQLException {
        try {
            return databaseMetaData.usesLocalFilePerTable();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }

    @Override
    public boolean usesLocalFiles() throws SQLException {
        try {
            return databaseMetaData.usesLocalFiles();
        } catch (final SQLException e) {
            handleException(e);
            return false;
        }
    }
}