1 /*
2 * Copyright (c) 2003, Henri Yandell
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or
6 * without modification, are permitted provided that the
7 * following conditions are met:
8 *
9 * + Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 *
12 * + Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * + Neither the name of Genjava-Core nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32 package com.generationjava.random;
33
34 import java.lang.reflect.InvocationHandler;
35 import java.lang.reflect.InvocationTargetException;
36 import java.lang.reflect.Method;
37 import java.lang.reflect.Proxy;
38
39 public class RandomBeanProxy implements InvocationHandler {
40
41 public static Object newInstance(Class intfce) {
42 RandomBeanProxy handler = new RandomBeanProxy();
43 Class proxyClass = Proxy.getProxyClass(
44 intfce.getClassLoader(),
45 new Class[] { intfce }
46 );
47 try {
48 return proxyClass.getConstructor( new Class[] { InvocationHandler.class }
49 ).newInstance(new Object[] { handler });
50 } catch(NoSuchMethodException nsme) {
51 nsme.printStackTrace();
52 } catch(SecurityException se) {
53 se.printStackTrace();
54 } catch(InstantiationException ie) {
55 ie.printStackTrace();
56 } catch(IllegalAccessException iae) {
57 iae.printStackTrace();
58 } catch(InvocationTargetException ite) {
59 ite.printStackTrace();
60 }
61 return null;
62 }
63
64 private RandomBeanProxy() {
65 }
66
67 public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
68 // we have to come up with a random reply to any method.
69 // we can try to be cute and handle set and get properly....
70 // but it's probably not worth it. maybe.
71
72 // proxy should be this...
73 Class returnType = method.getReturnType();
74 if(returnType == Void.TYPE) {
75 return null;
76 }
77 String name = method.getName();
78 if("toString".equals(name)) {
79 return ToString.beanToString(proxy);
80 }
81 RandomObject rndObj = new RandomObject();
82 return rndObj.makeInstance(returnType);
83 }
84
85 }