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Java > Open Source Codes > test > compliance > server > support > MBeanServerWrapper


1 /*
2  * JBoss, the OpenSource J2EE webOS
3  *
4  * Distributable under LGPL license.
5  * See terms of license at gnu.org.
6  */
7
8 package test.compliance.server.support;
9
10 import java.lang.reflect.InvocationHandler;
11 import java.lang.reflect.Method;
12 import java.lang.reflect.Proxy;
13
14 import javax.management.MBeanServer;
15
16 /**
17  * A wrapper for an MBeanServer
18  *
19  * @author <a HREF="mailto:Adrian.Brock@HappeningTimes.com">Adrian Brock</a>.
20  * @version $Revision: 1.3 $
21  */
22 public class MBeanServerWrapper
23    implements InvocationHandler
24 {
25    public MBeanServer server;
26
27    public boolean invoked = false;
28
29    private static Method EQUALS;
30
31    static
32    {
33       try
34       {
35          EQUALS = Object.class.getClass().getMethod("equals", new Class[] { Object.class });
36       }
37       catch (Exception e)
38       {
39          throw new RuntimeException(e.toString());
40       }
41    }
42
43    public static MBeanServer getWrapper()
44    {
45       return (MBeanServer) Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(),
46                                                   new Class[] { MBeanServer.class },
47                                                   new MBeanServerWrapper());
48    }
49
50    public static MBeanServerWrapper getHandler(MBeanServer proxy)
51    {
52       return (MBeanServerWrapper) Proxy.getInvocationHandler(proxy);
53    }
54
55    public Object invoke(Object proxy, Method method, Object[] args)
56       throws Throwable
57    {
58       invoked = true;
59       if (method.equals(EQUALS))
60          return new Boolean(proxy == args[0]);
61       if (method.getName().equals("queryMBeans"))
62          throw new MBeanServerReplaced();
63       return method.invoke(server, args);
64    }
65 }
66
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