    001// Copyright 2015 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 java.lang.reflect.Method;
    018import java.util.HashMap;
    019import java.util.Map;
    020
    021import javax.persistence.EntityManager;
    022import javax.persistence.PersistenceContext;
    023
    024import org.apache.tapestry5.ioc.MethodAdviceReceiver;
    025import org.apache.tapestry5.jpa.EntityManagerManager;
    026import org.apache.tapestry5.jpa.EntityTransactionManager;
    027import org.apache.tapestry5.jpa.JpaTransactionAdvisor;
    028import org.apache.tapestry5.jpa.annotations.CommitAfter;
    029import org.apache.tapestry5.plastic.MethodAdvice;
    030
    031public class JpaTransactionAdvisorImpl implements JpaTransactionAdvisor
    032{
    033    private final Map<String, MethodAdvice> methodAdvices;
    034
    035    public JpaTransactionAdvisorImpl(EntityManagerManager manager,
    036            EntityTransactionManager transactionManager)
    037    {
    038        methodAdvices = new HashMap<>(manager.getEntityManagers().size());
    039        for (Map.Entry<String, EntityManager> entry : manager.getEntityManagers().entrySet())
    040            methodAdvices.put(entry.getKey(),
    041                    new CommitAfterMethodAdvice(transactionManager, entry.getKey()));
    042        methodAdvices.put(null, new CommitAfterMethodAdvice(transactionManager, null));
    043    }
    044
    045    @Override
    046    public void addTransactionCommitAdvice(MethodAdviceReceiver receiver)
    047    {
    048        for (final Method m : receiver.getInterface().getMethods())
    049        {
    050            if (m.getAnnotation(CommitAfter.class) != null)
    051            {
    052                PersistenceContext annotation = receiver.getMethodAnnotation(m,
    053                        PersistenceContext.class);
    054
    055                receiver.adviseMethod(m,
    056                        methodAdvices.get(annotation == null ? null : annotation.unitName()));
    057            }
    058        }
    059    }
    060
    061}