    001// Copyright 2009, 2010, 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.transform;
    016
    017import org.apache.tapestry5.commons.ObjectLocator;
    018import org.apache.tapestry5.internal.services.ComponentClassCache;
    019import org.apache.tapestry5.ioc.annotations.InjectService;
    020import org.apache.tapestry5.model.MutableComponentModel;
    021import org.apache.tapestry5.plastic.PlasticClass;
    022import org.apache.tapestry5.plastic.PlasticField;
    023import org.apache.tapestry5.services.transform.ComponentClassTransformWorker2;
    024import org.apache.tapestry5.services.transform.TransformationSupport;
    025
    026/**
    027 * Processes the {@link org.apache.tapestry5.ioc.annotations.InjectService} annotation.
    028 *
    029 * @since 5.1.0.0
    030 */
    031public class InjectServiceWorker implements ComponentClassTransformWorker2
    032{
    033    private final ObjectLocator locator;
    034
    035    private final ComponentClassCache cache;
    036
    037    public InjectServiceWorker(ObjectLocator locator, ComponentClassCache cache)
    038    {
    039        this.locator = locator;
    040        this.cache = cache;
    041    }
    042
    043    public void transform(PlasticClass plasticClass, TransformationSupport support, MutableComponentModel model)
    044    {
    045        for (PlasticField field : plasticClass.getFieldsWithAnnotation(InjectService.class))
    046        {
    047            InjectService annotation = field.getAnnotation(InjectService.class);
    048
    049            field.claim(annotation);
    050
    051            Class fieldType = cache.forName(field.getTypeName());
    052
    053            Object service = locator.getService(annotation.value(), fieldType);
    054
    055            field.inject(service);
    056        }
    057    }
    058}