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1
5 package net.sourceforge.jwebunit.util.reflect;
6
7 import java.lang.reflect.InvocationTargetException  ;
8 import java.lang.reflect.Method ;
9
10
15 public class MethodInvoker {
16 private Object receiver;
17 private String methodName;
18 private Class [] argTypes;
19 private Class receiverType;
20 private Object [] args;
21
22 public MethodInvoker(Object receiver, String methodName) {
23 this(receiver, methodName, new Object [0]);
24 }
25
26 public MethodInvoker(Object receiver, String methodName, Object arg) {
27 this(receiver, methodName, new Object []{arg});
28 }
29
30 public MethodInvoker(Object receiver, String methodName, Object [] args) {
31 this.receiver = receiver;
32 receiverType = receiver.getClass();
33 this.methodName = methodName;
34 this.args = args;
35 argTypes = new Class [args.length];
36 for (int i = 0; i < args.length; i++) {
37 argTypes[i] = args[i].getClass();
38 }
39 }
40
41 public Method getMethod() throws NoSuchMethodException {
42 try {
43 return receiverType.getMethod(methodName, argTypes);
44 } catch (NoSuchMethodException e) {
45 convertToPrimitives();
46 try {
47 return receiverType.getMethod(methodName, argTypes);
48 } catch (NoSuchMethodException e1) {
49 String classes = "(";
50 for (int i = 0; i < argTypes.length; i++) {
51 Class argType = argTypes[i];
52 classes += " " + argType.getName();
53 if (i != argTypes.length - 1) {
54 classes += ",";
55 }
56 }
57 classes += ")";
58 throw new NoSuchMethodException (methodName + classes);
59 }
60
61 }
62 }
63
64 private void convertToPrimitives() {
65 Class [] newArgTypes = new Class [argTypes.length];
66 for (int i = 0; i < argTypes.length; i++) {
67 Class argType = argTypes[i];
68 if (argType.equals(Boolean .class)) {
69 newArgTypes[i] = Boolean.TYPE;
70 } else if (argType.equals(Byte .class)) {
71 newArgTypes[i] = Byte.TYPE;
72 } else if (argType.equals(Character .class)) {
73 newArgTypes[i] = Character.TYPE;
74 } else if (argType.equals(Double .class)) {
75 newArgTypes[i] = Double.TYPE;
76 } else if (argType.equals(Float .class)) {
77 newArgTypes[i] = Float.TYPE;
78 } else if (argType.equals(Integer .class)) {
79 newArgTypes[i] = Integer.TYPE;
80 } else if (argType.equals(Long .class)) {
81 newArgTypes[i] = Long.TYPE;
82 } else if (argType.equals(Short .class)) {
83 newArgTypes[i] = Short.TYPE;
84 } else {
85 newArgTypes[i] = argType;
86 }
87 }
88 argTypes = newArgTypes;
89 }
90
91 public Object invoke() throws NoSuchMethodException , IllegalAccessException ,
92 IllegalArgumentException , InvocationTargetException {
93 return getMethod().invoke(receiver, args);
94 }
95 }
96 |
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