org.springframework.orm.hibernate3.LocalTransactionManagerLookup Maven / Gradle / Ivy
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/*
* Copyright 2002-2012 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.orm.hibernate3;
import java.util.Properties;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import org.hibernate.transaction.TransactionManagerLookup;
/**
* Implementation of Hibernate's {@link TransactionManagerLookup} interface
* that returns a Spring-managed JTA {@link TransactionManager}, determined
* by LocalSessionFactoryBean's "jtaTransactionManager" property.
*
* The main advantage of this TransactionManagerLookup is that it avoids
* double configuration of JTA specifics. A single TransactionManager bean can
* be used for both JtaTransactionManager and LocalSessionFactoryBean, with no
* JTA setup in Hibernate configuration.
*
*
Alternatively, use Hibernate's own TransactionManagerLookup implementations:
* Spring's JtaTransactionManager only requires a TransactionManager for suspending
* and resuming transactions, so you might not need to apply such special Spring
* configuration at all.
*
* @author Juergen Hoeller
* @since 1.2
* @see LocalSessionFactoryBean#setJtaTransactionManager
* @see org.springframework.transaction.jta.JtaTransactionManager#setTransactionManager
*/
public class LocalTransactionManagerLookup implements TransactionManagerLookup {
private final TransactionManager transactionManager;
public LocalTransactionManagerLookup() {
TransactionManager tm = LocalSessionFactoryBean.getConfigTimeTransactionManager();
// absolutely needs thread-bound TransactionManager to initialize
if (tm == null) {
throw new IllegalStateException("No JTA TransactionManager found - " +
"'jtaTransactionManager' property must be set on LocalSessionFactoryBean");
}
this.transactionManager = tm;
}
public TransactionManager getTransactionManager(Properties props) {
return this.transactionManager;
}
public String getUserTransactionName() {
return null;
}
public Object getTransactionIdentifier(Transaction transaction) {
return transaction;
}
}