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Java > Open Source Codes > org > riotfamily > common > web > filter > ResourceStamper


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.filter;
25
26 import java.text.SimpleDateFormat JavaDoc;
27 import java.util.Date JavaDoc;
28
29 import org.springframework.beans.factory.InitializingBean;
30
31 /**
32  * Utility class that can be used to add a timestamp to a URL.
33  *
34  * @see CacheStampedResourcesFilter
35  * @see org.riotfamily.website.css.CssTemplateController
36  * @author Felix Gnass [fgnass at neteye dot de]
37  * @since 6.4
38  */

39 public class ResourceStamper implements InitializingBean {
40     
41     public static final String JavaDoc DFAULT_TIME_PATTERN = "ddHHmm";
42
43     private String JavaDoc timePattern = DFAULT_TIME_PATTERN;
44     
45     private String JavaDoc time;
46     
47     public void setTimePattern(String JavaDoc timePattern) {
48         this.timePattern = timePattern;
49     }
50     
51     public void afterPropertiesSet() throws Exception JavaDoc {
52         SimpleDateFormat JavaDoc df = new SimpleDateFormat JavaDoc(timePattern);
53         time = "?" + df.format(new Date JavaDoc());
54     }
55     
56     public String JavaDoc stamp(String JavaDoc url) {
57         if (url.indexOf('?') == -1) {
58             url += time;
59         }
60         return url;
61     }
62
63 }
64
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