org.sca4j.jpa.runtime.EmfInterceptor Maven / Gradle / Ivy
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* SCA4J
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*
* http://www.opensource.org/licenses/apache2.0.php
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* specific language governing permissions and limitations under the License.
*
* This project contains code licensed from the Apache Software Foundation under
* the Apache License, Version 2.0 and original code from project contributors.
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* Copyright (c) 2007 - 2008 fabric3 project contributors
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* Licensed to you under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. A copy of the license
* is included in this distrubtion or you may obtain a copy at
*
* http://www.opensource.org/licenses/apache2.0.php
*
* 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.
*
* This project contains code licensed from the Apache Software Foundation under
* the Apache License, Version 2.0 and original code from project contributors.
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package org.sca4j.jpa.runtime;
import javax.persistence.EntityManagerFactory;
import org.sca4j.spi.wire.Interceptor;
import org.sca4j.spi.invocation.Message;
import org.sca4j.spi.invocation.MessageImpl;
/**
* Target interceptor for entity manager factory.
*
* @version $Revision$ $Date$
*/
public class EmfInterceptor implements Interceptor {
private Interceptor next;
private String opName;
private EntityManagerFactory entityManagerFactory;
public EmfInterceptor(String opName, EntityManagerFactory entityManagerFactory) {
this.opName = opName;
this.entityManagerFactory = entityManagerFactory;
}
public Interceptor getNext() {
return next;
}
public Message invoke(Message msg) {
Object ret = null;
// TODO cater for the overloaded createEntityManager method
if ("createEntityManager".equals(opName)) {
ret = entityManagerFactory.createEntityManager();
} else if ("close".equals(opName)) {
entityManagerFactory.close();
} else if ("isOpen".equals(opName)) {
ret = entityManagerFactory.isOpen();
}
Message result = new MessageImpl();
result.setBody(ret);
return result;
}
public void setNext(Interceptor next) {
this.next = next;
}
}