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1   /*
2    * Copyright 2000-2001,2004 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.om.registry.base;
18  
19  import org.apache.jetspeed.om.registry.RegistryEntry;
20  import org.apache.jetspeed.om.registry.InvalidEntryException;
21  import org.apache.jetspeed.om.registry.RegistryException;
22  import org.apache.jetspeed.services.Registry;
23  import org.apache.jetspeed.services.logging.JetspeedLogFactoryService;
24  import org.apache.jetspeed.services.logging.JetspeedLogger;
25  
26  /***
27   * Extends BaseRegistry implementation to override object creation
28   * method and ensure Registry object is synchronized with its
29   * persistence backend by delegating actual addition/deletion of objects
30   * to the registry service.
31   * <p>To avoid loops, a RegistryService implementation using this class
32   * nees to call the addLocalEntry/removeLocalEntry methods to modify
33   * the in memory state of this Registry</p>
34   *
35   * @author <a href="mailto:raphael@apache.org">Raphaël Luta</a>
36   * @version $Id: BasePortletControllerRegistry.java,v 1.4 2004/02/23 03:08:26 jford Exp $
37   */
38  public class BasePortletControllerRegistry extends BaseRegistry
39  {
40      
41      /***
42       * Static initialization of the logger for this class
43       */    
44      private static final JetspeedLogger logger = JetspeedLogFactoryService.getLogger(BasePortletControllerRegistry.class.getName());    
45      
46      /***
47      @see Registry#setEntry
48      */
49      public void setEntry( RegistryEntry entry ) throws InvalidEntryException
50      {
51  		// Delegate to the RegistryService to ensure correct handling of
52  		// persistence if using file fragments
53  
54  		try
55  		{
56  			Registry.addEntry(Registry.PORTLET_CONTROLLER, entry);
57  		}
58  		catch (RegistryException e)
59  		{
60  			logger.error("Exception", e);
61  		}
62      }
63  
64      /***
65      @see Registry#addEntry
66      */
67      public void addEntry( RegistryEntry entry ) throws InvalidEntryException
68      {
69  		// Delegate to the RegistryService to ensure correct handling of
70  		// persistence if using file fragments
71  
72  		try
73  		{
74  			Registry.addEntry(Registry.PORTLET_CONTROLLER, entry);
75  		}
76  		catch (RegistryException e)
77  		{
78  			logger.error("Exception", e);
79  		}
80      }
81  
82      /***
83      @see Registry#removeEntry
84      */
85      public void removeEntry( String name )
86      {
87  		// Delegate to the RegistryService to ensure correct handling of
88  		// persistence if using file fragments
89  
90  		Registry.removeEntry(Registry.PORTLET_CONTROLLER, name);
91      }
92  
93      /***
94      @see Registry#removeEntry
95      */
96      public void removeEntry( RegistryEntry entry )
97      {
98  		// Delegate to the RegistryService to ensure correct handling of
99  		// persistence if using file fragments
100 
101 		if (entry != null)
102 		{
103 			Registry.removeEntry(Registry.PORTLET_CONTROLLER, entry.getName());
104 		}
105     }
106 
107     /***
108      * Creates a new RegistryEntry instance compatible with the current
109      * Registry instance implementation
110      *
111      * @return the newly created RegistryEntry
112      */
113     public RegistryEntry createEntry()
114     {
115 		return new BasePortletControllerEntry();
116 	}
117 }