01: /* ***** BEGIN LICENSE BLOCK *****
02: * Version: MPL 1.1
03: * The contents of this file are subject to the Mozilla Public License Version
04: * 1.1 (the "License"); you may not use this file except in compliance with
05: * the License. You may obtain a copy of the License at
06: * http://www.mozilla.org/MPL/
07: *
08: * Software distributed under the License is distributed on an "AS IS" basis,
09: * 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;
27: import java.util.Date;
28:
29: import org.riotfamily.common.web.util.ServletUtils;
30: import org.springframework.beans.factory.InitializingBean;
31:
32: /**
33: * Utility class that can be used to add a timestamp to a URL.
34: *
35: * @see CacheStampedResourcesFilter
36: * @see org.riotfamily.website.css.CssTemplateController
37: * @author Felix Gnass [fgnass at neteye dot de]
38: * @since 6.4
39: */
40: public class ResourceStamper implements InitializingBean {
41:
42: public static final String DFAULT_TIME_PATTERN = "ddHHmm";
43:
44: private String timePattern = DFAULT_TIME_PATTERN;
45:
46: private String time;
47:
48: public void setTimePattern(String timePattern) {
49: this .timePattern = timePattern;
50: }
51:
52: public void afterPropertiesSet() throws Exception {
53: SimpleDateFormat df = new SimpleDateFormat(timePattern);
54: time = df.format(new Date());
55: }
56:
57: public String stamp(String url) {
58: return ServletUtils.addParameter(url, time, null);
59: }
60:
61: }
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