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1 package com.tirsen.nanning.samples.prevayler;
2
3 import java.io.Serializable  ;
4 import java.lang.reflect.InvocationTargetException ;
5 import java.lang.reflect.Method ;
6
7 import com.tirsen.nanning.Invocation;
8
9 public class Call implements Serializable {
10 static final long serialVersionUID = -3336463259251779539L;
11
12 protected Object target;
13 protected Object [] args;
14 private Object classIdentifier;
15 private Class interfaceClass;
16 private Class [] parameterTypes;
17 private String methodName;
18
19 public Call(Invocation invocation) throws Exception {
20 setInvocation(invocation);
21 }
22
23 public Call() {
24 }
25
26 protected void setInvocation(Invocation invocation) throws Exception {
27 classIdentifier = invocation.getAspectInstance().getClassIdentifier();
28 interfaceClass = invocation.getTargetInterface();
29 methodName = invocation.getMethod().getName();
30 parameterTypes = invocation.getMethod().getParameterTypes();
31 target = invocation.getProxy();
32 args = invocation.getArgs();
33 }
34
35 public Method getMethod() {
36 try {
37 return interfaceClass.getMethod(methodName, parameterTypes);
38 } catch (Exception e) {
39 throw new RuntimeException ("did not find method " + methodName + " returning null", e);
40 }
41 }
42
43 public Class getInterfaceClass() {
44 return interfaceClass;
45 }
46
47 public Object getClassIdentifier() {
48 return classIdentifier;
49 }
50
51 public Object [] getArgs() {
52 return args;
53 }
54
55 public Object getTarget() {
56 return target;
57 }
58
59 public Object invoke() throws Exception {
60 final Method method = getMethod();
61 final Object target = getTarget();
62 final Object [] args = getArgs();
63
64 try {
65 return method.invoke(target, args);
66 } catch (InvocationTargetException e) {
67 if (e.getTargetException() instanceof Exception ) {
68 throw (Exception ) e.getTargetException();
69 } else if (e.getTargetException() instanceof Error ) {
70 throw (Error ) e.getTargetException();
71 } else {
72 throw e;
73 }
74 }
75 }
76 }
77 |
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