1 /*
2 * Copyright (c) 2001 - 2005 ivata limited.
3 * All rights reserved.
4 * ---------------------------------------------------------
5 * ivata masks may be redistributed under the GNU General Public
6 * License as published by the Free Software Foundation;
7 * version 2 of the License.
8 *
9 * These programs are free software; you can redistribute them and/or
10 * modify them under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; version 2 of the License.
12 *
13 * These programs are distributed in the hope that they will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16 *
17 * See the GNU General Public License in the file LICENSE.txt for more
18 * details.
19 *
20 * If you would like a copy of the GNU General Public License write to
21 *
22 * Free Software Foundation, Inc.
23 * 59 Temple Place - Suite 330
24 * Boston, MA 02111-1307, USA.
25 *
26 *
27 * To arrange commercial support and licensing, contact ivata at
28 * http://www.ivata.com/contact.jsp
29 * ---------------------------------------------------------
30 * $Log: RewriteTag.java,v $
31 * Revision 1.2 2005/04/28 18:23:35 colinmacleod
32 * Added server/contextPath rewriting.
33 *
34 * Revision 1.1 2005/04/11 14:56:37 colinmacleod
35 * Added base tag, link tag and rewrite tag to
36 * change the host name via environment entries.
37 * Added errors tag to handle errors even when
38 * the message is not found in the application
39 * resources.
40 *
41 * ---------------------------------------------------------
42 */
43 package com.ivata.mask.web.tag.html;
44
45 import org.apache.log4j.Logger;
46
47 import java.net.MalformedURLException;
48 import java.util.Map;
49
50 import javax.servlet.http.HttpServletRequest;
51 import javax.servlet.jsp.JspException;
52
53 import org.apache.struts.taglib.TagUtils;
54
55 import com.ivata.mask.web.RewriteHandling;
56
57 /***
58 * <p>
59 * Overridden from <strong>Struts</strong> to let you specify a server and
60 * context as environment entries.
61 * </p>
62 *
63 * @since ivata masks 0.6 (2005-04-09)
64 * @author Colin MacLeod <colin.macleod@ivata.com>
65 * @version $Revision: 1.2 $
66 */
67
68 public class RewriteTag extends org.apache.struts.taglib.html.RewriteTag {
69 /***
70 * Logger for this class.
71 */
72 private static final Logger logger = Logger.getLogger(RewriteTag.class);
73
74 /***
75 * Refer to {@link org.apache.struts.taglib.html.RewriteTag#doStartTag}.
76 * @return
77 * Refer to {@link org.apache.struts.taglib.html.RewriteTag#doStartTag}.
78 * @throws JspException
79 * Refer to {@link org.apache.struts.taglib.html.RewriteTag#doStartTag}.
80 */
81 public int doStartTag() throws JspException {
82 TagUtils tagUtils = TagUtils.getInstance();
83 Map params = tagUtils.computeParameters
84 (pageContext, paramId, paramName, paramProperty, paramScope,
85 name, property, scope, transaction);
86 String url = null;
87 try {
88 url = tagUtils.computeURL(pageContext, forward, href,
89 page, action, module, params,
90 anchor, false, false);
91 } catch (MalformedURLException e) {
92 throw new JspException
93 (messages.getMessage("rewrite.url", e.toString()));
94 }
95 HttpServletRequest request = (HttpServletRequest)
96 pageContext.getRequest();
97 url = RewriteHandling.rewriteURL(url, request.getContextPath());
98 tagUtils.write(pageContext, url);
99
100 // Skip the body of this tag
101 return (SKIP_BODY);
102 }
103 }