/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.deltaspike.jpa.impl.transaction;
import org.apache.deltaspike.jpa.api.transaction.Transactional;
import org.apache.deltaspike.jpa.spi.transaction.TransactionStrategy;
import javax.inject.Inject;
import javax.interceptor.AroundInvoke;
import javax.interceptor.Interceptor;
import javax.interceptor.InvocationContext;
import java.io.Serializable;
/**
* Interceptor for wrapping transactional database requests.
* This interceptor itself doesn't contain any functionality.
* Instead the 'real' work is done inside a pluggable
* {@link org.apache.deltaspike.jpa.spi.transaction.TransactionStrategy}.
*/
@Interceptor
@Transactional
public class TransactionalInterceptor implements Serializable
{
private static final long serialVersionUID = 8787285444722371172L;
@Inject
private TransactionStrategy transactionStrategy;
/**
* Creates a transaction before the intercepted method gets called and commits or reverts it after the invocation.
* A {@link org.apache.deltaspike.jpa.spi.transaction.TransactionStrategy}
* is allowed to begin the transaction lazily but it has to support nested interceptor calls.
*
* @param invocationContext current invocation-context
* @return result of the intercepted method
* @throws Exception exception which might be thrown by the intercepted method
*/
@AroundInvoke
public Object executeInTransaction(InvocationContext invocationContext) throws Exception
{
return transactionStrategy.execute(invocationContext);
}
}