001// Copyright 2005 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.tapestry.annotations;
016
017import java.lang.reflect.Method;
018
019import org.apache.hivemind.Location;
020import org.apache.tapestry.enhance.EnhancementOperation;
021import org.apache.tapestry.enhance.InjectComponentWorker;
022import org.apache.tapestry.spec.IComponentSpecification;
023
024/**
025 * Injects a reference to a compent.
026 * 
027 * @author Howard M. Lewis Ship
028 * @since 4.0
029 * @see org.apache.tapestry.annotations.InjectComponent
030 * @see org.apache.tapestry.enhance.InjectComponentWorker
031 */
032public class InjectComponentAnnotationWorker implements MethodAnnotationEnhancementWorker
033{
034    final InjectComponentWorker _delegate;
035
036    InjectComponentAnnotationWorker(InjectComponentWorker delegate)
037    {
038        _delegate = delegate;
039    }
040
041    public InjectComponentAnnotationWorker()
042    {
043        this(new InjectComponentWorker());
044    }
045
046    public void performEnhancement(EnhancementOperation op, IComponentSpecification spec,
047            Method method, Location location)
048    {
049        InjectComponent ic = method.getAnnotation(InjectComponent.class);
050        String propertyName = AnnotationUtils.getPropertyName(method);
051
052        _delegate.injectComponent(op, ic.value(), propertyName, location);
053    }
054
055}