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.spec.IComponentSpecification;
022import org.apache.tapestry.spec.InjectSpecification;
023import org.apache.tapestry.spec.InjectSpecificationImpl;
024
025/**
026 * Injects an Application State Object.
027 * 
028 * @author Howard M. Lewis Ship
029 * @since 4.0
030 * @see org.apache.tapestry.annotations.InjectState
031 * @see org.apache.tapestry.enhance.InjectStateWorker
032 */
033public class InjectStateAnnotationWorker implements MethodAnnotationEnhancementWorker
034{
035    public void performEnhancement(EnhancementOperation op, IComponentSpecification spec,
036            Method method, Location location)
037    {
038        InjectState is = method.getAnnotation(InjectState.class);
039
040        String propertyName = AnnotationUtils.getPropertyName(method);
041
042        InjectSpecification inject = new InjectSpecificationImpl();
043
044        inject.setType("state");
045        inject.setProperty(propertyName);
046        inject.setObject(is.value());
047        inject.setLocation(location);
048
049        spec.addInjectSpecification(inject);
050    }
051}