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1 package dynaop;
2
3 import java.lang.reflect.Method  ;
4
5 import net.sf.cglib.MethodProxy;
6
7 import dynaop.util.ArrayObject;
8 import dynaop.util.Classes;
9
10
14 class InvocationImpl implements Invocation {
15
16 Method method;
17 Object [] arguments;
18 Proxy proxy;
19 Object target;
20 Interceptor[] interceptors;
21 int interceptorCount;
22 int index = -1;
23 boolean classProxy;
24
25 public Object proceed() throws Throwable {
26 try {
27 this.index++;
28
29 if (index < interceptorCount)
31 return interceptors[index].intercept(this);
32
33 if (index > interceptorCount)
35 throw new IllegalStateException ("Proceeded too far.");
36
37 return invokeTarget(proxy, target, method, arguments, classProxy);
38 }
39 finally {
40 this.index--;
41 }
42 }
43
44 static Object invokeTarget(Object proxy, Object target, Method method,
45 Object [] arguments, boolean classProxy) throws Throwable {
46 if (classProxy)
47 return ((MethodProxy) target).invokeSuper(proxy, arguments);
48
49 return Classes.invoke(target, method, arguments);
51 }
52
53 public Object [] getArguments() {
54 return arguments;
55 }
56
57 public Method getMethod() {
58 return method;
59 }
60
61 public Object getTarget() {
62 return target;
63 }
64
65 public Proxy getProxy() {
66 return this.proxy;
67 }
68
69 void setProxy(Proxy proxy) {
70 this.proxy = proxy;
71 }
72
73 void setArguments(Object [] objects) {
74 arguments = objects;
75 }
76
77 void setMethod(Method method) {
78 this.method = method;
79 }
80
81 void setTarget(Object object) {
82 target = object;
83 }
84
85 void setInterceptors(Interceptor[] interceptors) {
86 this.interceptors = interceptors;
87 this.interceptorCount = this.interceptors.length;
88 }
89
90 void clearInterceptors() {
91 this.interceptors = null;
92 }
93
94 public String toString() {
95 StringBuffer buffer = new StringBuffer ();
96
97 buffer.append("dynaop.Invocation@");
98 buffer.append(Integer.toHexString(System.identityHashCode(this)));
99 buffer.append("[");
100
101 buffer.append("target: ");
102 buffer.append(target);
103 buffer.append(", ");
104
105 buffer.append("method: ");
106 buffer.append(method);
107 buffer.append(", ");
108
109 buffer.append("arguments: ");
110 buffer.append((arguments == null) ? null :
111 new ArrayObject(arguments));
112 buffer.append(", ");
113
114 buffer.append("interceptors: ");
115 buffer.append((interceptors == null) ? null :
116 new ArrayObject(interceptors));
117 buffer.append(", ");
118
119 buffer.append("index: ");
120 buffer.append(index);
121 buffer.append(", ");
122
123 buffer.append("]");
124
125 return buffer.toString();
126 }
127
128 void setClassProxy(boolean isClassProxy) {
129 this.classProxy = isClassProxy;
130 }
131 }
132 |
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