1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.taglib.portlet;
21  
22  import com.liferay.portal.kernel.log.Log;
23  import com.liferay.portal.kernel.log.LogFactoryUtil;
24  import com.liferay.portal.kernel.util.MethodInvoker;
25  import com.liferay.portal.kernel.util.MethodWrapper;
26  import com.liferay.portal.kernel.util.PortalClassLoaderUtil;
27  import com.liferay.portal.kernel.util.StringPool;
28  
29  import javax.servlet.jsp.JspException;
30  import javax.servlet.jsp.PageContext;
31  import javax.servlet.jsp.tagext.TagSupport;
32  
33  /**
34   * <a href="RenderURLParamsTag.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Brian Wing Shun Chan
37   *
38   */
39  public class RenderURLParamsTag extends TagSupport {
40  
41      public static String doTag(String varImpl, PageContext pageContext)
42          throws Exception {
43  
44          Object returnObj = null;
45  
46          Thread currentThread = Thread.currentThread();
47  
48          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
49  
50          try {
51              currentThread.setContextClassLoader(
52                  PortalClassLoaderUtil.getClassLoader());
53  
54              MethodWrapper methodWrapper = new MethodWrapper(
55                  _TAG_CLASS, _TAG_DO_END_METHOD,
56                  new Object[] {varImpl, pageContext});
57  
58              returnObj = MethodInvoker.invoke(methodWrapper);
59          }
60          catch (Exception e) {
61              _log.error(e, e);
62  
63              throw e;
64          }
65          finally {
66              currentThread.setContextClassLoader(contextClassLoader);
67          }
68  
69          if (returnObj != null) {
70              return returnObj.toString();
71          }
72          else {
73              return StringPool.BLANK;
74          }
75      }
76  
77      public int doEndTag() throws JspException {
78          try {
79              doTag(_varImpl, pageContext);
80          }
81          catch (Exception e) {
82              if (e instanceof JspException) {
83                  throw (JspException)e;
84              }
85              else {
86                  throw new JspException(e);
87              }
88          }
89  
90          return EVAL_PAGE;
91      }
92  
93      public void setVarImpl(String varImpl) {
94          _varImpl = varImpl;
95      }
96  
97      private static final String _TAG_CLASS =
98          "com.liferay.portal.servlet.taglib.portlet.RenderURLParamsTagUtil";
99  
100     private static final String _TAG_DO_END_METHOD = "doEndTag";
101 
102     private static Log _log = LogFactoryUtil.getLog(RenderURLParamsTag.class);
103 
104     private String _varImpl;
105 
106 }