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Java > Open Source Codes > org > apache > geronimo > tomcat > valve > InstanceContextValve


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 package org.apache.geronimo.tomcat.valve;
18
19 import java.io.IOException JavaDoc;
20 import java.util.Set JavaDoc;
21
22 import javax.resource.ResourceException JavaDoc;
23 import javax.servlet.ServletException JavaDoc;
24
25 import org.apache.catalina.connector.Request;
26 import org.apache.catalina.connector.Response;
27 import org.apache.catalina.valves.ValveBase;
28 import org.apache.geronimo.transaction.DefaultInstanceContext;
29 import org.apache.geronimo.transaction.InstanceContext;
30 import org.apache.geronimo.transaction.TrackedConnectionAssociator;
31
32 /**
33  * @version $Rev: $ $Date: $
34  */
35 public class InstanceContextValve extends ValveBase {
36
37     private final Set JavaDoc unshareableResources;
38
39     private final Set JavaDoc applicationManagedSecurityResources;
40
41     private final TrackedConnectionAssociator trackedConnectionAssociator;
42
43     public InstanceContextValve(Set JavaDoc unshareableResources,
44             Set JavaDoc applicationManagedSecurityResources,
45             TrackedConnectionAssociator trackedConnectionAssociator) {
46         this.unshareableResources = unshareableResources;
47         this.applicationManagedSecurityResources = applicationManagedSecurityResources;
48         this.trackedConnectionAssociator = trackedConnectionAssociator;
49     }
50
51     public void invoke(Request request, Response response) throws IOException JavaDoc,
52             ServletException JavaDoc {
53
54         try {
55             InstanceContext oldContext = trackedConnectionAssociator
56                     .enter(new DefaultInstanceContext(unshareableResources,
57                             applicationManagedSecurityResources));
58
59             // Pass this request on to the next valve in our pipeline
60 getNext().invoke(request, response);
61
62             // Set the old one back
63 trackedConnectionAssociator.exit((InstanceContext) oldContext);
64         } catch (ResourceException JavaDoc e) {
65             throw new RuntimeException JavaDoc(e);
66         }
67     }
68 }
69
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