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1   /*
2    * $Id: WebappPropertyResourcesFactory.java 354539 2005-12-06 20:40:16Z niallp $
3    * $Revision: 354539 $
4    * $Date: 2005-12-06 20:40:16 +0000 (Tue, 06 Dec 2005) $
5    *
6    * ====================================================================
7    *
8    *  Copyright 2003-2005 The Apache Software Foundation
9    *
10   *  Licensed under the Apache License, Version 2.0 (the "License");
11   *  you may not use this file except in compliance with the License.
12   *  You may obtain a copy of the License at
13   *
14   *      http://www.apache.org/licenses/LICENSE-2.0
15   *
16   *  Unless required by applicable law or agreed to in writing, software
17   *  distributed under the License is distributed on an "AS IS" BASIS,
18   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19   *  See the License for the specific language governing permissions and
20   *  limitations under the License.
21   *
22   */
23  
24  package org.apache.commons.resources.impl;
25  
26  import org.apache.commons.resources.Resources;
27  import org.apache.commons.resources.ResourcesException;
28  
29  /**
30   * <p>Concrete implementation of {@link org.apache.commons.resources.ResourcesFactory} that creates
31   * {@link org.apache.commons.resources.Resources} instances that wrap a family (one per Locale) of
32   * property files that share a base context-relative path for
33   * servlet context resources, and have name suffixes reflecting
34   * the Locale for which the file's messages apply.  Resources are
35   * looked up in a hierarchy of files in a manner identical to that
36   * performed by <code>java.util.ResourceBundle.getBundle()</code>.</p>
37   *
38   * <p>The configuration variable passed to the <code>createResources()</code>
39   * method must be the context-relative base name of the properties file family,
40   * and must begin with a slash ('/') character.
41   * For example, if the configuration URL is passed as
42   * <code>/WEB-INF/resources/MyResources</code>, the resources for the
43   * <code>en_US</code> Locale would be stored under context resource
44   * <code>/WEB-INF/resources/MyReesources_en_US.properties</code>, and the
45   * default resources would be stored in
46   * <code>/WEB-INF/resources/MyResources.properties</code>.</p>
47   */
48  public class WebappPropertyResourcesFactory extends WebappResourcesFactoryBase {
49  
50  
51      /**
52       * <p>Create and return a new {@link org.apache.commons.resources.Resources} instance with the
53       * specified logical name, after calling its <code>init()</code>
54       * method and delegating the relevant properties.</p>
55       *
56       * @param name Logical name of the {@link org.apache.commons.resources.Resources} instance to create
57       * @param config Configuration string for this resource (if any)
58       * @return The new Resources instance.
59       *
60       * @exception ResourcesException if a {@link org.apache.commons.resources.Resources} instance
61       *  of the specified logical name cannot be created.
62       */
63      protected Resources createResources(String name, String config) {
64  
65          Resources res =
66              new WebappPropertyResources(name, config, getServletContext());
67          res.setReturnNull(isReturnNull());
68          res.init();
69          return (res);
70  
71      }
72  
73  
74  }