001// Copyright 2011 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry5.internal.jpa; 016 017import org.apache.tapestry5.ioc.MethodAdviceReceiver; 018import org.apache.tapestry5.jpa.EntityManagerManager; 019import org.apache.tapestry5.jpa.JpaTransactionAdvisor; 020import org.apache.tapestry5.jpa.annotations.CommitAfter; 021import org.apache.tapestry5.plastic.MethodAdvice; 022 023import javax.persistence.PersistenceContext; 024import java.lang.reflect.Method; 025 026public class JpaTransactionAdvisorImpl implements JpaTransactionAdvisor 027{ 028 private final EntityManagerManager manager; 029 030 private final MethodAdvice shared; 031 032 033 public JpaTransactionAdvisorImpl(EntityManagerManager manager) 034 { 035 this.manager = manager; 036 037 shared = new CommitAfterMethodAdvice(manager, null); 038 } 039 040 public void addTransactionCommitAdvice(final MethodAdviceReceiver receiver) 041 { 042 for (final Method m : receiver.getInterface().getMethods()) 043 { 044 if (m.getAnnotation(CommitAfter.class) != null) 045 { 046 PersistenceContext annotation = receiver.getMethodAnnotation(m, PersistenceContext.class); 047 048 MethodAdvice advice = 049 annotation == null ? shared : new CommitAfterMethodAdvice(manager, annotation); 050 051 receiver.adviseMethod(m, advice); 052 } 053 } 054 055 } 056 057}