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Java > Open Source Codes > org > apache > jetspeed > om > registry > base > BasePortletControlRegistry


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 /**
28  * Extends BaseRegistry implementation to override object creation
29  * method and ensure Registry object is synchronized with its
30  * persistence backend by delegating actual addition/deletion of objects
31  * to the registry service.
32  * <p>To avoid loops, a RegistryService implementation using this class
33  * nees to call the addLocalEntry/removeLocalEntry methods to modify
34  * the in memory state of this Registry</p>
35  *
36  * @author <a HREF="mailto:raphael@apache.org">Raphaël Luta</a>
37  * @version $Id: BasePortletControlRegistry.java,v 1.4 2004/02/23 03:08:26 jford Exp $
38  */
39 public class BasePortletControlRegistry extends BaseRegistry
40 {
41
42     /**
43      * Static initialization of the logger for this class
44      */
45     private static final JetspeedLogger logger = JetspeedLogFactoryService.getLogger(BasePortletControlRegistry.class.getName());
46     
47     /**
48     @see Registry#setEntry
49     */
50     public void setEntry( RegistryEntry entry ) throws InvalidEntryException
51     {
52         // Delegate to the RegistryService to ensure correct handling of
53 // persistence if using file fragments
54
55         try
56         {
57             Registry.addEntry(Registry.PORTLET_CONTROL, entry);
58         }
59         catch (RegistryException e)
60         {
61             logger.error("Exception", e);
62         }
63     }
64
65     /**
66     @see Registry#addEntry
67     */
68     public void addEntry( RegistryEntry entry ) throws InvalidEntryException
69     {
70         // Delegate to the RegistryService to ensure correct handling of
71 // persistence if using file fragments
72
73         try
74         {
75             Registry.addEntry(Registry.PORTLET_CONTROL, entry);
76         }
77         catch (RegistryException e)
78         {
79             logger.error("Exception", e);
80         }
81     }
82
83     /**
84     @see Registry#removeEntry
85     */
86     public void removeEntry( String JavaDoc name )
87     {
88         // Delegate to the RegistryService to ensure correct handling of
89 // persistence if using file fragments
90
91         Registry.removeEntry(Registry.PORTLET_CONTROL, name);
92     }
93
94     /**
95     @see Registry#removeEntry
96     */
97     public void removeEntry( RegistryEntry entry )
98     {
99         // Delegate to the RegistryService to ensure correct handling of
100 // persistence if using file fragments
101
102         if (entry != null)
103         {
104             Registry.removeEntry(Registry.PORTLET_CONTROL, entry.getName());
105         }
106     }
107
108     /**
109      * Creates a new RegistryEntry instance compatible with the current
110      * Registry instance implementation
111      *
112      * @return the newly created RegistryEntry
113      */
114     public RegistryEntry createEntry()
115     {
116         return new BasePortletControlEntry();
117     }
118 }
119
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