SessionContext


1   /*
2    * Copyright 2003-2006 the original author or authors.
3    * Licensed under the Apache License, Version 2.0 (the "License");
4    * you may not use this file except in compliance with the License.
5    * You may obtain a copy of the License at
6    *
7    * http://www.apache.org/licenses/LICENSE-2.0
8    *
9    * Unless required by applicable law or agreed to in writing, software
10   * distributed under the License is distributed on an "AS IS" BASIS,
11   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12   * See the License for the specific language governing permissions and
13   * limitations under the License.
14   * 
15   */
16  package com.jdon.container.visitor.data;
17  
18  import java.util.HashMap  ;
19  import java.util.Map  ;
20  
21  /**
22   * this class inlude those datas that read from the web container or others.
23   * these datas is stateful, and it's scope is one instance per client.
24   * usually they are saved in httpSession of the web container.
25   * 
26   * but these datas are different from the components that saved in httpsession.
27   * it is like the stateful components. it include state data.
28   * 
29   *  the way of visiting the SessionContext that saved in httpSession  
30   * 
31   *     targetMetaRequest.setVisitableName(ComponentKeys.SESSIONCONTEXT_FACTORY);        
32   *     SessionContext sessionContext = (SessionContext)cm.visit(targetMetaRequest);
33   * 
34  
35   * 
36   * @author <a HREF="mailto:banqiao@jdon.com">banq</a>
37   *
38   */
39  
40  public class SessionContext {
41      public final static String   NAME = SessionContext.class.getName();
42      
43      private Map   arrtibutes = new HashMap  ();
44      
45      public void setArrtibute(String   key, Object   object){
46          arrtibutes.put(key, object);
47      }
48      
49      public Object   getArrtibute(String   key){
50          return arrtibutes.get(key);
51      }
52      
53      public void remove(String   key){
54          arrtibutes.remove(key);
55      }
56      
57      public void removeAll(){
58          arrtibutes.clear();
59      }
60      
61      
62  }
63
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