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Java > Open Source Codes > org > apache > geronimo > proxy > ProxyContainer


1 /**
2  *
3  * Copyright 2003-2004 The Apache Software Foundation
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 package org.apache.geronimo.proxy;
19
20 import java.lang.reflect.InvocationHandler JavaDoc;
21 import java.lang.reflect.Method JavaDoc;
22 import java.lang.reflect.Proxy JavaDoc;
23
24 import org.apache.geronimo.core.service.Invocation;
25 import org.apache.geronimo.core.service.InvocationResult;
26 import org.apache.geronimo.core.service.Interceptor;
27
28 /**
29  * A local container that is a proxy for some other "real" container.
30  * This container is itself fairly unintelligent; you need to add some
31  * interceptors to get the desired behavior (i.e. contacting the real
32  * server on every request). For example, see
33  * {@link org.apache.geronimo.remoting.jmx.RemoteMBeanServerFactory}
34  *
35  * @version $Rev: 46019 $ $Date: 2004-09-14 02:56:06 -0700 (Tue, 14 Sep 2004) $
36  */
37 public class ProxyContainer extends SimpleRPCContainer implements InvocationHandler JavaDoc {
38
39     public ProxyContainer(Interceptor firstInterceptor) {
40         super(firstInterceptor);
41     }
42
43     /**
44      * @see java.lang.reflect.InvocationHandler#invoke(java.lang.Object, java.lang.reflect.Method, java.lang.Object[])
45      */
46     public Object JavaDoc invoke(Object JavaDoc proxy, Method JavaDoc method, Object JavaDoc[] args) throws Throwable JavaDoc {
47         Invocation invocation = new ProxyInvocation();
48         ProxyInvocation.putMethod(invocation, method);
49         ProxyInvocation.putArguments(invocation, args);
50         ProxyInvocation.putProxy(invocation, proxy);
51         InvocationResult result = this.invoke(invocation);
52         if( result.isException() )
53             throw result.getException();
54         return result.getResult();
55     }
56
57     public Object JavaDoc createProxy(ClassLoader JavaDoc cl, Class JavaDoc[] interfaces) {
58         return Proxy.newProxyInstance(cl, interfaces, this);
59     }
60
61     public static ProxyContainer getContainer(Object JavaDoc proxy) {
62         if (Proxy.isProxyClass(proxy.getClass()))
63             throw new IllegalArgumentException JavaDoc("Not a proxy.");
64         return (ProxyContainer) Proxy.getInvocationHandler(proxy);
65     }
66
67 }
68
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