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 }