/*
    * 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;
  import java.util.Objects;
  
  /**
   * <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 {@link DatabaseMetaData} */
      private final DatabaseMetaData databaseMetaData;
  
      /** The connection that created me. **/
      private final DelegatingConnection<?> connection;
  
      /**
       * 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) {
          this.connection = Objects.requireNonNull(connection, "connection");
          this.databaseMetaData = Objects.requireNonNull(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.
      *
      * @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 {@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 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
      */
     @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) {
             throw e;
         }
         connection.handleException(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;
         }
         if (iface.isAssignableFrom(databaseMetaData.getClass())) {
             return true;
         }
         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
      */
     @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;
         }
     }
 
     @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;
         }
     }
 
     @Override
     public <T> T unwrap(final Class<T> iface) throws SQLException {
         if (iface.isAssignableFrom(getClass())) {
             return iface.cast(this);
         }
         if (iface.isAssignableFrom(databaseMetaData.getClass())) {
             return iface.cast(databaseMetaData);
         }
         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;
         }
     }
 }