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1
7 package org.jboss.aop.annotation;
8
9 import java.lang.reflect.InvocationHandler  ;
10 import java.lang.reflect.Method ;
11 import java.lang.reflect.Proxy ;
12 import java.util.Map ;
13
14
20 public class AnnotationProxy implements InvocationHandler
21 {
22 Map map;
23
24 public AnnotationProxy(Map valueMap)
25 {
26 map = valueMap;
27 }
28
29 public Object invoke(Object proxy, Method method, Object [] args)
30 throws Throwable
31 {
32 if (method.getName().equals("equals"))
33 {
34 return doEquals(proxy, args[0]);
35 }
36 else if (method.getName().equals("hashCode"))
37 {
38 return doHashCode();
39 }
40 else if (method.getName().equals("toString"))
41 {
42 return map.toString();
43 }
44
52 return map.get(method.getName());
53 }
54
55 private Object doEquals(Object proxy, Object obj)
56 {
57 if (obj == proxy) return Boolean.TRUE;
58 if (obj == null) return Boolean.FALSE;
59
60 Class [] intfs = proxy.getClass().getInterfaces();
61 if (!intfs[0].isAssignableFrom(obj.getClass()))
62 {
63 return Boolean.FALSE;
64 }
65 try
66 {
67 Proxy.getInvocationHandler(obj);
68 }
69 catch (Exception ex)
70 {
71 return Boolean.FALSE;
72 }
73 return Boolean.TRUE;
74 }
75
76 private Object doHashCode()
77 {
78 return new Integer (map.hashCode());
79 }
80
81 public static Object createProxy(javassist.bytecode.annotation.Annotation info) throws Exception
82 {
83 Class annotation = Thread.currentThread().getContextClassLoader().loadClass(info.getTypeName());
84 return createProxy(info, annotation);
85 }
86
87 public static Object createProxy(javassist.bytecode.annotation.Annotation info, Class annotation) throws Exception
88 {
89 Map map = ProxyMapCreator.createProxyMap(annotation, info);
90 AnnotationProxy proxyHandler = new AnnotationProxy(map);
91 return java.lang.reflect.Proxy.newProxyInstance(annotation.getClassLoader(), new Class []{annotation}, proxyHandler);
92 }
93
94 public static Object createProxy(Map map, Class annotation) throws Exception
95 {
96 AnnotationProxy proxyHandler = new AnnotationProxy(map);
97 return java.lang.reflect.Proxy.newProxyInstance(annotation.getClassLoader(), new Class []{annotation}, proxyHandler);
98 }
99 }
100 |
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