| RenderURLParamsTag.java |
1 /**
2 * Copyright (c) 2000-2009 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.log.Log;
26 import com.liferay.portal.kernel.log.LogFactoryUtil;
27 import com.liferay.portal.kernel.util.MethodInvoker;
28 import com.liferay.portal.kernel.util.MethodWrapper;
29 import com.liferay.portal.kernel.util.PortalClassLoaderUtil;
30 import com.liferay.portal.kernel.util.StringPool;
31
32 import javax.servlet.jsp.JspException;
33 import javax.servlet.jsp.PageContext;
34 import javax.servlet.jsp.tagext.TagSupport;
35
36 /**
37 * <a href="RenderURLParamsTag.java.html"><b><i>View Source</i></b></a>
38 *
39 * @author Brian Wing Shun Chan
40 *
41 */
42 public class RenderURLParamsTag extends TagSupport {
43
44 public static String doTag(String varImpl, PageContext pageContext)
45 throws Exception {
46
47 Object returnObj = null;
48
49 Thread currentThread = Thread.currentThread();
50
51 ClassLoader contextClassLoader = currentThread.getContextClassLoader();
52
53 try {
54 currentThread.setContextClassLoader(
55 PortalClassLoaderUtil.getClassLoader());
56
57 MethodWrapper methodWrapper = new MethodWrapper(
58 _TAG_CLASS, _TAG_DO_END_METHOD,
59 new Object[] {varImpl, pageContext});
60
61 returnObj = MethodInvoker.invoke(methodWrapper);
62 }
63 catch (Exception e) {
64 _log.error(e, e);
65
66 throw e;
67 }
68 finally {
69 currentThread.setContextClassLoader(contextClassLoader);
70 }
71
72 if (returnObj != null) {
73 return returnObj.toString();
74 }
75 else {
76 return StringPool.BLANK;
77 }
78 }
79
80 public int doEndTag() throws JspException {
81 try {
82 doTag(_varImpl, pageContext);
83 }
84 catch (Exception e) {
85 if (e instanceof JspException) {
86 throw (JspException)e;
87 }
88 else {
89 throw new JspException(e);
90 }
91 }
92
93 return EVAL_PAGE;
94 }
95
96 public void setVarImpl(String varImpl) {
97 _varImpl = varImpl;
98 }
99
100 private static final String _TAG_CLASS =
101 "com.liferay.portal.servlet.taglib.portlet.RenderURLParamsTagUtil";
102
103 private static final String _TAG_DO_END_METHOD = "doEndTag";
104
105 private static Log _log = LogFactoryUtil.getLog(RenderURLParamsTag.class);
106
107 private String _varImpl;
108
109 }