001/*
002 * Copyright 2002-2018 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.jdbc.core.metadata;
018
019import java.sql.DatabaseMetaData;
020import java.sql.SQLException;
021
022/**
023 * The Derby specific implementation of {@link TableMetaDataProvider}.
024 * Overrides the Derby meta-data info regarding retrieving generated keys.
025 *
026 * @author Thomas Risberg
027 * @since 3.0
028 */
029public class DerbyTableMetaDataProvider extends GenericTableMetaDataProvider {
030
031        private boolean supportsGeneratedKeysOverride = false;
032
033
034        public DerbyTableMetaDataProvider(DatabaseMetaData databaseMetaData) throws SQLException {
035                super(databaseMetaData);
036        }
037
038
039        @Override
040        public void initializeWithMetaData(DatabaseMetaData databaseMetaData) throws SQLException {
041                super.initializeWithMetaData(databaseMetaData);
042                if (!databaseMetaData.supportsGetGeneratedKeys()) {
043                        if (logger.isWarnEnabled()) {
044                                logger.warn("Overriding supportsGetGeneratedKeys from DatabaseMetaData to 'true'; it was reported as " +
045                                                "'false' by " + databaseMetaData.getDriverName() + " " + databaseMetaData.getDriverVersion());
046                        }
047                        this.supportsGeneratedKeysOverride = true;
048                }
049        }
050
051        @Override
052        public boolean isGetGeneratedKeysSupported() {
053                return (super.isGetGeneratedKeysSupported() || this.supportsGeneratedKeysOverride);
054        }
055
056}