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 org.apache.tapestry5.jpa.EntityManagerManager;
018import org.apache.tapestry5.jpa.annotations.CommitAfter;
019import org.apache.tapestry5.model.MutableComponentModel;
020import org.apache.tapestry5.plastic.MethodAdvice;
021import org.apache.tapestry5.plastic.PlasticClass;
022import org.apache.tapestry5.plastic.PlasticMethod;
023import org.apache.tapestry5.services.transform.ComponentClassTransformWorker2;
024import org.apache.tapestry5.services.transform.TransformationSupport;
025
026import javax.persistence.PersistenceContext;
027
028public class CommitAfterWorker implements ComponentClassTransformWorker2
029{
030
031    private final MethodAdvice shared;
032
033    private final EntityManagerManager manager;
034
035    public CommitAfterWorker(EntityManagerManager manager)
036    {
037        this.manager = manager;
038
039        shared = new CommitAfterMethodAdvice(manager);
040    }
041
042    @Override
043    public void transform(PlasticClass plasticClass, TransformationSupport support, MutableComponentModel model)
044    {
045        for (final PlasticMethod method : plasticClass
046                .getMethodsWithAnnotation(CommitAfter.class))
047        {
048            PersistenceContext annotation = method.getAnnotation(PersistenceContext.class);
049
050            MethodAdvice advice = annotation == null ? shared : new CommitAfterMethodAdvice(manager);
051
052            method.addAdvice(advice);
053        }
054    }
055}