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Java > Open Source Codes > org > riotfamily > common > web > resource > PropertyResourceFilter


1 /* ***** BEGIN LICENSE BLOCK *****
2  * Version: MPL 1.1
3  * The contents of this file are subject to the Mozilla Public License Version
4  * 1.1 (the "License"); you may not use this file except in compliance with
5  * the License. You may obtain a copy of the License at
6  * http://www.mozilla.org/MPL/
7  *
8  * Software distributed under the License is distributed on an "AS IS" basis,
9  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
10  * for the specific language governing rights and limitations under the
11  * License.
12  *
13  * The Original Code is Riot.
14  *
15  * The Initial Developer of the Original Code is
16  * Neteye GmbH.
17  * Portions created by the Initial Developer are Copyright (C) 2006
18  * the Initial Developer. All Rights Reserved.
19  *
20  * Contributor(s):
21  * Felix Gnass [fgnass at neteye dot de]
22  *
23  * ***** END LICENSE BLOCK ***** */
24 package org.riotfamily.common.web.resource;
25
26 import java.io.FilterReader JavaDoc;
27 import java.io.Reader JavaDoc;
28 import java.util.Iterator JavaDoc;
29 import java.util.Map JavaDoc;
30 import java.util.Properties JavaDoc;
31
32 import javax.servlet.http.HttpServletRequest JavaDoc;
33
34 import org.riotfamily.common.io.PropertyFilterReader;
35 import org.springframework.util.Assert;
36 import org.springframework.web.servlet.support.RequestContextUtils;
37
38 public class PropertyResourceFilter extends AbstractPathMatchingResourceFilter {
39
40     public static final String JavaDoc CONTEXT_PATH_PROPERTY = "contextPath";
41
42     public static final String JavaDoc LANGUAGE_PROPERTY = "language";
43
44     private Properties JavaDoc properties;
45     
46     private boolean exposeContextPath = true;
47     
48     private boolean exposeLanguage = true;
49     
50     public void setProperties(Properties JavaDoc properties) {
51         this.properties = properties;
52     }
53     
54     public void setPropertiesMap(Map JavaDoc map) {
55         properties = new Properties JavaDoc();
56         Iterator JavaDoc it = map.entrySet().iterator();
57         while (it.hasNext()) {
58             Map.Entry JavaDoc entry = (Map.Entry JavaDoc) it.next();
59             Assert.isInstanceOf(String JavaDoc.class, entry.getKey(),
60                     "Map must only contain String keys.");
61             
62             Assert.isInstanceOf(String JavaDoc.class, entry.getValue(),
63                     "Map must only contain String values.");
64             
65             String JavaDoc key = (String JavaDoc) entry.getKey();
66             String JavaDoc value = (String JavaDoc) entry.getValue();
67             properties.setProperty(key, value);
68         }
69     }
70     
71     public void setExposeContextPath(boolean exposeContextPath) {
72         this.exposeContextPath = exposeContextPath;
73     }
74     
75     public void setExposeLanguage(boolean exposeLanguage) {
76         this.exposeLanguage = exposeLanguage;
77     }
78
79     public FilterReader JavaDoc createFilterReader(Reader JavaDoc in, HttpServletRequest JavaDoc request) {
80         Properties JavaDoc props = new Properties JavaDoc(properties);
81         if (exposeContextPath) {
82             props.setProperty(CONTEXT_PATH_PROPERTY, request.getContextPath());
83         }
84         if (exposeLanguage) {
85             props.setProperty(LANGUAGE_PROPERTY,
86                     RequestContextUtils.getLocale(request).getLanguage().toLowerCase());
87         }
88         return new PropertyFilterReader(in, props);
89     }
90
91 }
92
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