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.HiveMind; 020import org.apache.hivemind.Location; 021import org.apache.tapestry.bean.LightweightBeanInitializer; 022import org.apache.tapestry.enhance.EnhancementOperation; 023import org.apache.tapestry.spec.BeanSpecification; 024import org.apache.tapestry.spec.IBeanSpecification; 025import org.apache.tapestry.spec.IComponentSpecification; 026 027/** 028 * Creates a {@link org.apache.tapestry.spec.IBeanSpecification} from the 029 * {@link org.apache.tapestry.annotations.Bean} annotation. 030 * 031 * @author Howard M. Lewis Ship 032 * @since 4.0 033 */ 034public class BeanAnnotationWorker implements MethodAnnotationEnhancementWorker 035{ 036 public void performEnhancement(EnhancementOperation op, IComponentSpecification spec, 037 Method method, Location location) 038 { 039 Bean bean = method.getAnnotation(Bean.class); 040 String propertyName = AnnotationUtils.getPropertyName(method); 041 042 Class beanClass = bean.value(); 043 if (beanClass.equals(Object.class)) 044 beanClass = op.getPropertyType(propertyName); 045 046 IBeanSpecification bs = new BeanSpecification(); 047 048 // A shame to convert it to a string then back to 049 // a class later, but ... 050 051 bs.setClassName(beanClass.getName()); 052 bs.setPropertyName(propertyName); 053 bs.setLocation(location); 054 055 // Starting to like enums! 056 057 bs.setLifecycle(bean.lifecycle().getBeanLifecycle()); 058 059 String initializer = bean.initializer(); 060 061 if (HiveMind.isNonBlank(initializer)) 062 bs.addInitializer(new LightweightBeanInitializer(initializer)); 063 064 spec.addBeanSpecification(propertyName, bs); 065 } 066 067}