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Java > Open Source Codes > org > apache > geronimo > naming > java > ComponentContextInterceptor


1 /**
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. 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.naming.java;
19
20 import javax.naming.Context JavaDoc;
21
22 import org.apache.geronimo.interceptor.Interceptor;
23 import org.apache.geronimo.interceptor.Invocation;
24 import org.apache.geronimo.interceptor.InvocationResult;
25
26 /**
27  * An interceptor that pushes the current component's java:comp context into
28  * the java: JNDI namespace
29  *
30  * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
31  */
32 public class ComponentContextInterceptor implements Interceptor {
33     private final Interceptor next;
34     private final Context JavaDoc compContext;
35
36     /**
37      * Constructor specifying the components JNDI Context (java:comp)
38      * @param compContext the component's JNDI Context
39      */
40     public ComponentContextInterceptor(Interceptor next, Context JavaDoc compContext) {
41         assert next != null;
42         assert compContext != null;
43         this.next = next;
44         this.compContext = compContext;
45     }
46
47     public InvocationResult invoke(Invocation invocation) throws Throwable JavaDoc {
48         Context JavaDoc oldContext = RootContext.getComponentContext();
49         try {
50             RootContext.setComponentContext(compContext);
51             return next.invoke(invocation);
52         } finally {
53             RootContext.setComponentContext(oldContext);
54         }
55     }
56 }
57
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