KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > tapestry > annotations > BeanAnnotationWorker


1 // Copyright 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.tapestry.annotations;
16
17 import java.lang.reflect.Method JavaDoc;
18
19 import org.apache.hivemind.HiveMind;
20 import org.apache.hivemind.Location;
21 import org.apache.tapestry.bean.LightweightBeanInitializer;
22 import org.apache.tapestry.enhance.EnhancementOperation;
23 import org.apache.tapestry.spec.BeanSpecification;
24 import org.apache.tapestry.spec.IBeanSpecification;
25 import org.apache.tapestry.spec.IComponentSpecification;
26
27 /**
28  * Creates a {@link org.apache.tapestry.spec.IBeanSpecification} from the
29  * {@link org.apache.tapestry.annotations.Bean} annotation.
30  *
31  * @author Howard M. Lewis Ship
32  * @since 4.0
33  */
34 public class BeanAnnotationWorker implements MethodAnnotationEnhancementWorker
35 {
36     public void performEnhancement(EnhancementOperation op, IComponentSpecification spec,
37             Method JavaDoc method, Location location)
38     {
39         Bean bean = method.getAnnotation(Bean.class);
40         String JavaDoc propertyName = AnnotationUtils.getPropertyName(method);
41
42         Class JavaDoc beanClass = bean.value();
43         if (beanClass.equals(Object JavaDoc.class))
44             beanClass = op.getPropertyType(propertyName);
45
46         IBeanSpecification bs = new BeanSpecification();
47
48         // A shame to convert it to a string then back to
49 // a class later, but ...
50
51         bs.setClassName(beanClass.getName());
52         bs.setPropertyName(propertyName);
53         bs.setLocation(location);
54
55         // Starting to like enums!
56
57         bs.setLifecycle(bean.lifecycle().getBeanLifecycle());
58
59         String JavaDoc initializer = bean.initializer();
60
61         if (HiveMind.isNonBlank(initializer))
62             bs.addInitializer(new LightweightBeanInitializer(initializer));
63
64         spec.addBeanSpecification(propertyName, bs);
65     }
66
67 }
68
Popular Tags