org.springframework.jdbc.support.lob.SpringLobCreatorSynchronization Maven / Gradle / Ivy
/*
* Copyright 2002-2006 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
*
* 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.springframework.jdbc.support.lob;
import org.springframework.jdbc.datasource.DataSourceUtils;
import org.springframework.transaction.support.TransactionSynchronizationAdapter;
import org.springframework.util.Assert;
/**
* Callback for resource cleanup at the end of a Spring transaction.
* Invokes LobCreator.close() to clean up temporary LOBs
* that might have been created.
*
* @author Juergen Hoeller
* @since 2.0
* @see org.springframework.jdbc.support.lob.LobCreator#close()
*/
public class SpringLobCreatorSynchronization extends TransactionSynchronizationAdapter {
/**
* Order value for TransactionSynchronization objects that clean up LobCreators.
* Return CONNECTION_SYNCHRONIZATION_ORDER - 200 to execute LobCreator cleanup
* before Hibernate Session (- 100) and JDBC Connection cleanup, if any.
* @see org.springframework.jdbc.datasource.DataSourceUtils#CONNECTION_SYNCHRONIZATION_ORDER
*/
public static final int LOB_CREATOR_SYNCHRONIZATION_ORDER =
DataSourceUtils.CONNECTION_SYNCHRONIZATION_ORDER - 200;
private final LobCreator lobCreator;
private boolean beforeCompletionCalled = false;
/**
* Create a SpringLobCreatorSynchronization for the given LobCreator.
* @param lobCreator the LobCreator to close after transaction completion
*/
public SpringLobCreatorSynchronization(LobCreator lobCreator) {
Assert.notNull(lobCreator, "LobCreator must not be null");
this.lobCreator = lobCreator;
}
public int getOrder() {
return LOB_CREATOR_SYNCHRONIZATION_ORDER;
}
public void beforeCompletion() {
// Close the LobCreator early if possible, to avoid issues with strict JTA
// implementations that issue warnings when doing JDBC operations after
// transaction completion.
this.beforeCompletionCalled = true;
this.lobCreator.close();
}
public void afterCompletion(int status) {
if (!this.beforeCompletionCalled) {
// beforeCompletion not called before (probably because of flushing on commit
// in the transaction manager, after the chain of beforeCompletion calls).
// Close the LobCreator here.
this.lobCreator.close();
}
}
}