spring DerbyTableMetaDataProvider 源码
spring DerbyTableMetaDataProvider 代码
文件路径：/spring-jdbc/src/main/java/org/springframework/jdbc/core/metadata/DerbyTableMetaDataProvider.java
/*
* Copyright 2002-2018 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.jdbc.core.metadata;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;
/**
* The Derby specific implementation of {@link TableMetaDataProvider}.
* Overrides the Derby meta-data info regarding retrieving generated keys.
*
* @author Thomas Risberg
* @since 3.0
*/
public class DerbyTableMetaDataProvider extends GenericTableMetaDataProvider {
private boolean supportsGeneratedKeysOverride = false;
public DerbyTableMetaDataProvider(DatabaseMetaData databaseMetaData) throws SQLException {
super(databaseMetaData);
}
@Override
public void initializeWithMetaData(DatabaseMetaData databaseMetaData) throws SQLException {
super.initializeWithMetaData(databaseMetaData);
if (!databaseMetaData.supportsGetGeneratedKeys()) {
if (logger.isInfoEnabled()) {
logger.info("Overriding supportsGetGeneratedKeys from DatabaseMetaData to 'true'; it was reported as " +
"'false' by " + databaseMetaData.getDriverName() + " " + databaseMetaData.getDriverVersion());
}
this.supportsGeneratedKeysOverride = true;
}
}
@Override
public boolean isGetGeneratedKeysSupported() {
return (super.isGetGeneratedKeysSupported() || this.supportsGeneratedKeysOverride);
}
}
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