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Java > Open Source Codes > org > codehaus > aspectwerkz > extension > hotswap > Foo


1 /**************************************************************************************
2  * Copyright (c) Jonas BonŽr, Alexandre Vasseur. All rights reserved. *
3  * http://aspectwerkz.codehaus.org *
4  * ---------------------------------------------------------------------------------- *
5  * The software in this package is published under the terms of the BSD-style license *
6  * a copy of which has been included with this distribution in the license.txt file. *
7  **************************************************************************************/
8 package org.codehaus.aspectwerkz.extension.hotswap;
9
10 /**
11  * A simple class to test the in process HotSwap
12  *
13  * @author <a HREF="mailto:alex@gnilux.com">Alexandre Vasseur </a>
14  */
15 public class Foo {
16
17     public void sayHello() {
18         System.out.println("Hello - I am " + this + " class " + this.getClass().hashCode());
19     }
20
21     public static void main(String JavaDoc a[]) throws Throwable JavaDoc {
22         // System.out.println("start");
23 // HotSwapClient client = new HotSwapClient();
24 // System.out.println("created hotswap client");
25 // Foo aFoo = new Foo();
26 // aFoo.sayHello();
27 // ClassPool cp = ClassPool.getDefault();
28 // CtClass newFoo = cp.get("org.codehaus.aspectwerkz.extension.hotswap.Foo");
29 // CtMethod m = newFoo.getDeclaredMethod("sayHello");
30 // m.insertBefore("{System.out.println(\"\thotswapped talks:\");}");
31 // byte[] newFooB = cp.write("org.codehaus.aspectwerkz.extension.hotswap.Foo");
32 // HotSwapClient.hotswap(Foo.class, newFooB);
33 //
34 // // same instance is hotswapped
35 // aFoo.sayHello();
36 //
37 // // other instance is hotswapped
38 // Foo bFoo = new Foo();
39 // bFoo.sayHello();
40 // ClassPool cp2 = new ClassPool(null);
41 // cp2.appendClassPath(new LoaderClassPath(Foo.class.getClassLoader()));
42 // try {
43 // // swap java.lang.ClassLoader with itself
44 // cp2.writeFile("java.lang.ClassLoader", "_dump");
45 // //byte[] bytecode =
46 // ClassLoaderPatcher.getPatchedClassLoader("org.codehaus.aspectwerkz.hook.impl.ClassLoaderPreProcessorImpl");
47 // HotSwapClient.hotswap(ClassLoader.class, cp2.get("java.lang.ClassLoader").toBytecode());
48 // } catch (Throwable e) {
49 // e.printStackTrace();
50 // }
51 //
52 // // swap java.lang.String with itself
53 // cp2.writeFile("java.lang.String", "_dump");
54 // //byte[] bytecode =
55 // ClassLoaderPatcher.getPatchedClassLoader("org.codehaus.aspectwerkz.hook.impl.ClassLoaderPreProcessorImpl");
56 // HotSwapClient.hotswap(String.class, cp2.get("java.lang.String").toBytecode());
57 }
58 }
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