    001// Copyright 2011, 2014 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.util.HashMap;
    018import java.util.Map;
    019
    020import javax.persistence.EntityManager;
    021import javax.persistence.PersistenceContext;
    022
    023import org.apache.tapestry5.jpa.EntityManagerManager;
    024import org.apache.tapestry5.jpa.EntityTransactionManager;
    025import org.apache.tapestry5.jpa.annotations.CommitAfter;
    026import org.apache.tapestry5.model.MutableComponentModel;
    027import org.apache.tapestry5.plastic.MethodAdvice;
    028import org.apache.tapestry5.plastic.PlasticClass;
    029import org.apache.tapestry5.plastic.PlasticMethod;
    030import org.apache.tapestry5.services.transform.ComponentClassTransformWorker2;
    031import org.apache.tapestry5.services.transform.TransformationSupport;
    032
    033public class CommitAfterWorker implements ComponentClassTransformWorker2
    034{
    035    private final Map<String, MethodAdvice> methodAdvices;
    036
    037    public CommitAfterWorker(EntityManagerManager manager,
    038            EntityTransactionManager transactionManager)
    039    {
    040        methodAdvices = new HashMap<>(manager.getEntityManagers().size());
    041        for (Map.Entry<String, EntityManager> entry : manager.getEntityManagers().entrySet())
    042            methodAdvices.put(entry.getKey(),
    043                    new CommitAfterMethodAdvice(transactionManager, entry.getKey()));
    044        methodAdvices.put(null, new CommitAfterMethodAdvice(transactionManager, null));
    045    }
    046
    047    @Override
    048    public void transform(PlasticClass plasticClass, TransformationSupport support,
    049            MutableComponentModel model)
    050    {
    051        for (final PlasticMethod method : plasticClass.getMethodsWithAnnotation(CommitAfter.class))
    052        {
    053            PersistenceContext annotation = method.getAnnotation(PersistenceContext.class);
    054
    055            method.addAdvice(methodAdvices.get(annotation == null ? null : annotation.unitName()));
    056        }
    057    }
    058}