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Java > Open Source Codes > com > caucho > portal > generic > ResourceBundleFactory


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  * Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  * notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in
15  * the documentation and/or other materials provided with the
16  * distribution.
17  *
18  * 3. The end-user documentation included with the redistribution, if
19  * any, must include the following acknowlegement:
20  * "This product includes software developed by the
21  * Caucho Technology (http://www.caucho.com/)."
22  * Alternately, this acknowlegement may appear in the software itself,
23  * if and wherever such third-party acknowlegements normally appear.
24  *
25  * 4. The names "Hessian", "Resin", and "Caucho" must not be used to
26  * endorse or promote products derived from this software without prior
27  * written permission. For written permission, please contact
28  * info@caucho.com.
29  *
30  * 5. Products derived from this software may not be called "Resin"
31  * nor may "Resin" appear in their names without prior written
32  * permission of Caucho Technology.
33  *
34  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
35  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
36  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
37  * DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
38  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
39  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
40  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
41  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
42  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
43  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
44  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45  *
46  * @author Sam
47  */

48
49 package com.caucho.portal.generic;
50
51 import java.util.*;
52
53 public class ResourceBundleFactory
54 {
55   private String JavaDoc _name;
56   private Map<String JavaDoc,Object JavaDoc> _defaultMap;
57   private Map<Locale, PortletResourceBundle> _bundleMap
58     = new HashMap<Locale, PortletResourceBundle>();
59
60   public ResourceBundleFactory()
61   {
62     _defaultMap = new LinkedHashMap<String JavaDoc, Object JavaDoc>();
63     addDefault("javax.portlet.title", "");
64     addDefault("javax.portlet.short-title", "");
65     addDefault("javax.portlet.keywords", "");
66   }
67
68   /**
69    * Set a name for the parent resoruce bundle. The name
70    * is used for a call to ResourceBundle.getBundle()
71    * for each locale.
72    */

73   public void setName(String JavaDoc name)
74   {
75     _name = name;
76     _bundleMap.clear();
77   }
78
79   /**
80    * Typical keys for defaults with portlets are:
81    *
82    * addDefault("javax.portlet.title", getPortletInfoTitle());
83    * addDefault("javax.portlet.short-title", getPortletInfoShortTitle());
84    * addDefault("javax.portlet.keywords", getPortletInfoKeywords());
85    */

86   public void addDefault(String JavaDoc key, String JavaDoc value)
87   {
88     _defaultMap.put(key, value);
89   }
90
91   public void addDefault(NameValuePair nameValuePair)
92   {
93     addDefault(nameValuePair.getName(), nameValuePair.getValue());
94   }
95
96   public ResourceBundle getResourceBundle(Locale locale)
97   {
98     PortletResourceBundle bundle = _bundleMap.get(locale);
99
100     if (bundle == null) {
101       bundle = new PortletResourceBundle(_name, locale, _defaultMap);
102       _bundleMap.put(locale, bundle);
103     }
104
105     return bundle;
106   }
107
108   static class PortletResourceBundle extends ResourceBundle
109   {
110     private Locale _locale;
111     private Map<String JavaDoc, Object JavaDoc> _defaultMap;
112     private ResourceBundle _parent;
113
114     public PortletResourceBundle( String JavaDoc name,
115                                   Locale locale,
116                                   Map<String JavaDoc, Object JavaDoc> defaultMap )
117     {
118       _locale = locale;
119       _defaultMap = defaultMap;
120
121       if (name != null) {
122         ClassLoader JavaDoc loader = Thread.currentThread().getContextClassLoader();
123
124         _parent = ResourceBundle.getBundle(name, _locale, loader);
125
126         super.setParent(_parent);
127       }
128     }
129
130     public Locale getLocale()
131     {
132       return _parent == null ? _locale : _parent.getLocale();
133     }
134
135     public Object JavaDoc handleGetObject(String JavaDoc key)
136     {
137       if (_parent == null) {
138         if (_defaultMap != null)
139           return _defaultMap.get(key);
140         else
141           return null;
142       }
143
144       try {
145         return _parent.getObject(key);
146       }
147       catch (MissingResourceException ex) {
148         if (_defaultMap != null)
149           return _defaultMap.get(key);
150         else
151           return null;
152       }
153     }
154
155     public Enumeration getKeys()
156     {
157       if (_defaultMap != null)
158         return Collections.enumeration(_defaultMap.keySet());
159       else
160         return Collections.enumeration(Collections.EMPTY_LIST);
161     }
162   }
163 }
164
165
166
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