| RenderURLParamsTag.java |
1 /**
2 * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.taglib.portlet;
24
25 import com.liferay.portal.kernel.util.MethodInvoker;
26 import com.liferay.portal.kernel.util.MethodWrapper;
27 import com.liferay.portal.kernel.util.PortalClassLoaderUtil;
28 import com.liferay.portal.kernel.util.StringPool;
29
30 import javax.servlet.jsp.JspException;
31 import javax.servlet.jsp.PageContext;
32 import javax.servlet.jsp.tagext.TagSupport;
33
34 import org.apache.commons.logging.Log;
35 import org.apache.commons.logging.LogFactory;
36
37 /**
38 * <a href="RenderURLParamsTag.java.html"><b><i>View Source</i></b></a>
39 *
40 * @author Brian Wing Shun Chan
41 *
42 */
43 public class RenderURLParamsTag extends TagSupport {
44
45 public static String doTag(String varImpl, PageContext pageContext)
46 throws Exception {
47
48 Object returnObj = null;
49
50 Thread currentThread = Thread.currentThread();
51
52 ClassLoader contextClassLoader = currentThread.getContextClassLoader();
53
54 try {
55 currentThread.setContextClassLoader(
56 PortalClassLoaderUtil.getClassLoader());
57
58 MethodWrapper methodWrapper = new MethodWrapper(
59 _TAG_CLASS, _TAG_DO_END_METHOD,
60 new Object[] {varImpl, pageContext});
61
62 returnObj = MethodInvoker.invoke(methodWrapper);
63 }
64 catch (Exception e) {
65 _log.error(e, e);
66
67 throw e;
68 }
69 finally {
70 currentThread.setContextClassLoader(contextClassLoader);
71 }
72
73 if (returnObj != null) {
74 return returnObj.toString();
75 }
76 else {
77 return StringPool.BLANK;
78 }
79 }
80
81 public int doEndTag() throws JspException {
82 try {
83 doTag(_varImpl, pageContext);
84 }
85 catch (Exception e) {
86 if (e instanceof JspException) {
87 throw (JspException)e;
88 }
89 else {
90 throw new JspException(e);
91 }
92 }
93
94 return EVAL_PAGE;
95 }
96
97 public void setVarImpl(String varImpl) {
98 _varImpl = varImpl;
99 }
100
101 private static final String _TAG_CLASS =
102 "com.liferay.portal.servlet.taglib.portlet.RenderURLParamsTagUtil";
103
104 private static final String _TAG_DO_END_METHOD = "doEndTag";
105
106 private static Log _log = LogFactory.getLog(RenderURLParamsTag.class);
107
108 private String _varImpl;
109
110 }