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1 package dynaop;
2
3 import java.lang.reflect.Member  ;
4 import java.lang.reflect.Method ;
5 import java.lang.reflect.Modifier ;
6 import java.util.ArrayList ;
7 import java.util.Arrays ;
8 import java.util.List ;
9
10 import dynaop.util.Classes;
11 import dynaop.util.NestedException;
12
13 import net.sf.cglib.Enhancer;
14 import net.sf.cglib.Factory;
15 import net.sf.cglib.MethodFilter;
16 import net.sf.cglib.MethodInterceptor;
17
18
23 class ClassProxyCreator {
24
25 static final MethodFilter METHOD_FILTER = new MethodFilter() {
26 public boolean accept(Member m) {
27 Method method = (Method ) m;
28 int modifiers = method.getModifiers();
29
30 if (!Modifier.isPublic(modifiers))
32 return false;
33
34 if (method.getDeclaringClass().equals(Object .class) &&
36 !Classes.OBJECT_METHODS_SET.contains(method))
37 return false;
38
39 return true;
40 }
41 };
42
43 ProxyType proxyType;
44 Class proxyClass;
45
46 ClassProxyCreator(ProxyType proxyType, Class parentClass) {
47 this.proxyType = proxyType;
48
49 Class [] interfaces = proxyType.getInterfaces();
50 List interfaceList = new ArrayList (interfaces.length + 1);
51
52 interfaceList.add(Proxy.class);
53 interfaceList.add(WriteReplace.class);
54
55 interfaceList.addAll(Arrays.asList(interfaces));
56 interfaces = (Class []) interfaceList.toArray(
57 new Class [interfaceList.size()]);
58
59 interfaceList.add(parentClass);
60
61 this.proxyClass = Enhancer.enhanceClass(parentClass, interfaces,
63 Classes.commonLoader(interfaceList), METHOD_FILTER);
64 }
65
66 ProxyType getProxyType() {
67 return proxyType;
68 }
69
70 Proxy createProxy(MethodInterceptor handler) {
71 try {
72 Proxy proxy = (Proxy) this.proxyClass.newInstance();
73 ((Factory) proxy).interceptor(handler);
74 return proxy;
75 }
76 catch (Exception e) {
77 throw NestedException.wrap(e);
78 }
79 }
80
81 public interface WriteReplace {
82 public Object writeReplace();
83 }
84 }
85 |
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