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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  package org.apache.jetspeed.decoration.caches;
18  
19  import java.util.HashMap;
20  import java.util.Map;
21  
22  import javax.servlet.http.HttpSession;
23  
24  import org.apache.jetspeed.PortalReservedParameters;
25  import org.apache.jetspeed.decoration.PathResolverCache;
26  
27  /***
28   * Extends the 
29   * 
30   * @author <href a="mailto:weaver@apache.org">Scott T. Weaver</a>
31   *
32   */
33  public class SessionPathResolverCache extends HashMapPathResolverCache implements PathResolverCache
34  {
35      public SessionPathResolverCache(HttpSession session)
36      {
37          cache = (Map) session.getAttribute(PortalReservedParameters.RESOVLER_CACHE_ATTR);
38          
39          if(cache == null)
40          {
41              cache = new HashMap();
42              session.setAttribute(PortalReservedParameters.RESOVLER_CACHE_ATTR, cache);
43          }
44      }
45      
46      public void clear()
47      {
48          cache.clear();
49      }
50  }