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ExpireFactory xref
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1   /*
2    * Copyright 2000-2004 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  
17  package org.apache.jetspeed.portal.expire;
18  
19  //jetspeed stuff
20  import org.apache.jetspeed.portal.Portlet;
21  import org.apache.jetspeed.services.logging.JetspeedLogFactoryService;
22  import org.apache.jetspeed.services.logging.JetspeedLogger;
23  import org.apache.jetspeed.util.JetspeedException;
24  
25  /***
26  Handles content expiration
27  
28  @author <a href="mailto:burton@apache.org">Kevin A. Burton</a>
29  @version $Id: ExpireFactory.java,v 1.6 2004/02/23 03:24:40 jford Exp $
30  */
31  public class ExpireFactory 
32  {
33  
34      /***
35       * Static initialization of the logger for this class
36       */    
37      private static final JetspeedLogger logger = JetspeedLogFactoryService.getLogger(ExpireFactory.class.getName());
38      
39      public static final String FILE_WATCH_EXPIRE 
40          = "org.apache.jetspeed.portal.expire.FileWatchExpire";
41  
42      public static final String NO_EXPIRE 
43          = "org.apache.jetspeed.portal.expire.NoExpire";    
44  
45      
46      /***
47      Since this object essentially does nothing.  Only use one instance for
48      performance
49      */
50      public static Expire noExpire = new NoExpire();
51          
52      
53      /***
54      Create a new Expire object with the specified Portlet and classname.
55  
56      @author <a href="mailto:burton@apache.org">Kevin A. Burton</a>
57      @version $Id: ExpireFactory.java,v 1.6 2004/02/23 03:24:40 jford Exp $
58      */
59      public static Expire getExpire( Portlet portlet,
60                                      String classname ) throws JetspeedException {
61          
62          if ( classname.equals( NO_EXPIRE ) ) {
63              return noExpire;
64          }
65          
66          try {
67              Expire expire = (Expire)Class.forName( classname ).newInstance();
68              expire.init();
69              expire.setPortlet( portlet );
70              expire.setExpired( false );
71  
72              return expire;
73          } catch ( Throwable t ) {
74              logger.error("Throwable",  t );
75              throw new JetspeedException( t.getMessage() );
76          }
77      }
78      
79  }
80