/*
* Copyright 2006-2007 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.batch.support.transaction;
import java.util.Stack;
import org.springframework.transaction.TransactionDefinition;
import org.springframework.transaction.TransactionException;
import org.springframework.transaction.support.AbstractPlatformTransactionManager;
import org.springframework.transaction.support.DefaultTransactionStatus;
import org.springframework.transaction.support.TransactionSynchronizationManager;
@SuppressWarnings("serial")
public class ResourcelessTransactionManager extends AbstractPlatformTransactionManager {
@Override
protected void doBegin(Object transaction, TransactionDefinition definition) throws TransactionException {
((ResourcelessTransaction) transaction).begin();
}
@Override
protected void doCommit(DefaultTransactionStatus status) throws TransactionException {
if (logger.isDebugEnabled()) {
logger.debug("Committing resourceless transaction on [" + status.getTransaction() + "]");
}
}
@Override
protected Object doGetTransaction() throws TransactionException {
Object transaction = new ResourcelessTransaction();
Stack<Object> resources;
if (!TransactionSynchronizationManager.hasResource(this)) {
resources = new Stack<Object>();
TransactionSynchronizationManager.bindResource(this, resources);
}
else {
@SuppressWarnings("unchecked")
Stack<Object> stack = (Stack<Object>) TransactionSynchronizationManager.getResource(this);
resources = stack;
}
resources.push(transaction);
return transaction;
}
@Override
protected void doRollback(DefaultTransactionStatus status) throws TransactionException {
if (logger.isDebugEnabled()) {
logger.debug("Rolling back resourceless transaction on [" + status.getTransaction() + "]");
}
}
@Override
protected boolean isExistingTransaction(Object transaction) throws TransactionException {
if (TransactionSynchronizationManager.hasResource(this)) {
@SuppressWarnings("unchecked")
Stack<Object> stack = (Stack<Object>) TransactionSynchronizationManager.getResource(this);
return stack.size() > 1;
}
return ((ResourcelessTransaction) transaction).isActive();
}
@Override
protected void doSetRollbackOnly(DefaultTransactionStatus status) throws TransactionException {
}
@Override
protected void doCleanupAfterCompletion(Object transaction) {
@SuppressWarnings("unchecked")
Stack<Object> list = (Stack<Object>) TransactionSynchronizationManager.getResource(this);
Stack<Object> resources = list;
resources.clear();
TransactionSynchronizationManager.unbindResource(this);
((ResourcelessTransaction) transaction).clear();
}
private static class ResourcelessTransaction {
private boolean active = false;
public boolean isActive() {
return active;
}
public void begin() {
active = true;
}
public void clear() {
active = false;
}
}
}