SessionHandlerImpl


1   /*
2    * Copyright 2005 The Apache Software Foundation.
3    * 
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    * 
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    * 
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.apache.cocoon.portal.wsrp.consumer;
17  
18  import java.util.Hashtable  ;
19  
20  import org.apache.avalon.framework.logger.AbstractLogEnabled;
21  import org.apache.wsrp4j.consumer.ConsumerEnvironment;
22  import org.apache.wsrp4j.consumer.SessionHandler;
23  import org.apache.wsrp4j.consumer.UserSession;
24  import org.apache.wsrp4j.consumer.UserSessionMgr;
25  import org.apache.wsrp4j.exception.WSRPException;
26  
27  /**
28   * Simple Session Handler<br/>
29   *
30   * @author <a HREF="mailto:cziegeler@s-und-n.de">Carsten Ziegeler</a>
31   * @author <a HREF="mailto:malessandrini@s-und-n.de">Michel Alessandrini</a>
32   *
33   * @version $Id: SessionHandlerImpl.java 264755 2005-08-30 10:29:21Z cziegeler $
34   **/
35  public class SessionHandlerImpl
36      extends AbstractLogEnabled
37      implements SessionHandler, RequiresConsumerEnvironment {
38  
39      /** Holds all user-sessions */
40      protected Hashtable   userSessions = new Hashtable  ();
41      
42      /** The consumerEnvironment */
43      protected ConsumerEnvironment consumerEnv;
44      
45      /**
46       * @see org.apache.cocoon.portal.wsrp.consumer.RequiresConsumerEnvironment#setConsumerEnvironment(org.apache.wsrp4j.consumer.ConsumerEnvironment)
47       */
48      public void setConsumerEnvironment(ConsumerEnvironment env) {
49          this.consumerEnv = env;
50      }
51  
52      /**
53       * Get the session manager of the user session with the given user ID and producer ID<br/>
54       * 
55       * @return The user session object representing a session between an end-user and
56       *         a producer.
57       **/
58      public UserSessionMgr getUserSession(String   producerID, String   userID)
59      throws WSRPException {
60          UserSessionMgr userSession = null;
61  
62          if (producerID != null && userID != null) {
63              String   key = createKey(userID, producerID);
64              userSession = (UserSessionMgr)this.userSessions.get(key);
65  
66              if (userSession == null) {
67                  String   url = consumerEnv.getProducerRegistry().getProducer(producerID).getMarkupInterfaceEndpoint();
68                  userSession = new UserSessionImpl(producerID, userID, url, this.getLogger());
69                  addUserSession(userSession);
70              }
71          }
72  
73          return userSession;
74      }
75  
76      /**
77       * Set the Session into the sessionHandler
78       * 
79       * @param userSession
80       */
81      private void addUserSession(UserSession userSession) {
82          if (userSession != null) {
83              this.userSessions.put(createKey(userSession.getUserID(), userSession.getProducerID()), userSession);
84          }
85      }
86  
87      /**
88       * Represents the values of the user and the producer in a nice form<br/>
89       * 
90       * @param userID
91       * @param producerID
92       * @return the string containing information of the user and the producer
93       */
94      private String   createKey(String   userID, String   producerID) {
95          return "user :" + userID + " producer:" + producerID;
96      }
97  }
98
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