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.ui;
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  import com.liferay.taglib.util.IncludeTag;
32  
33  import javax.servlet.jsp.JspException;
34  import javax.servlet.jsp.PageContext;
35  
36  /**
37   * <a href="WriteTag.java.html"><b><i>View Source</i></b></a>
38   *
39   * @author Brian Wing Shun Chan
40   *
41   */
42  public class WriteTag extends IncludeTag {
43  
44      public static String doTag(
45              Object bean, String property, PageContext pageContext)
46          throws Exception {
47  
48          return doTag(_PAGE, bean, property, pageContext);
49      }
50  
51      public static String doTag(
52              String page, Object bean, String property, PageContext pageContext)
53          throws Exception {
54  
55          Object returnObj = null;
56  
57          Thread currentThread = Thread.currentThread();
58  
59          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
60  
61          try {
62              currentThread.setContextClassLoader(
63                  PortalClassLoaderUtil.getClassLoader());
64  
65              MethodWrapper methodWrapper = new MethodWrapper(
66                  _TAG_CLASS, _TAG_DO_END_METHOD,
67                  new Object[] {page, bean, property, pageContext});
68  
69              returnObj = MethodInvoker.invoke(methodWrapper);
70          }
71          catch (Exception e) {
72              _log.error(e, e);
73          }
74          finally {
75              currentThread.setContextClassLoader(contextClassLoader);
76          }
77  
78          if (returnObj != null) {
79              return returnObj.toString();
80          }
81          else {
82              return StringPool.BLANK;
83          }
84      }
85  
86      public int doEndTag() throws JspException {
87          try {
88              doTag(getPage(), _bean, _property, pageContext);
89          }
90          catch (Exception e) {
91              if (e instanceof JspException) {
92                  throw (JspException)e;
93              }
94              else {
95                  throw new JspException(e);
96              }
97          }
98  
99          return EVAL_PAGE;
100     }
101 
102     public void setBean(Object bean) {
103         _bean = bean;
104     }
105 
106     public void setProperty(String property) {
107         _property = property;
108     }
109 
110     protected String getDefaultPage() {
111         return _PAGE;
112     }
113 
114     private static final String _TAG_CLASS =
115         "com.liferay.portal.servlet.taglib.ui.WriteTagUtil";
116 
117     private static final String _TAG_DO_END_METHOD = "doEndTag";
118 
119     private static final String _PAGE = "/html/taglib/ui/write/page.jsp";
120 
121     private static Log _log = LogFactoryUtil.getLog(WriteTag.class);
122 
123     private Object _bean;
124     private String _property;
125 
126 }