1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * This library is free software; you can redistribute it and/or modify it under
5    * the terms of the GNU Lesser General Public License as published by the Free
6    * Software Foundation; either version 2.1 of the License, or (at your option)
7    * any later version.
8    *
9    * This library is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   * details.
13   */
14  
15  package com.liferay.portal.kernel.servlet;
16  
17  import com.liferay.portal.kernel.util.GetterUtil;
18  import com.liferay.portal.kernel.util.PropsKeys;
19  import com.liferay.portal.kernel.util.PropsUtil;
20  
21  import javax.servlet.Servlet;
22  import javax.servlet.ServletContext;
23  import javax.servlet.ServletRequest;
24  import javax.servlet.ServletResponse;
25  import javax.servlet.jsp.JspApplicationContext;
26  import javax.servlet.jsp.JspEngineInfo;
27  import javax.servlet.jsp.JspFactory;
28  import javax.servlet.jsp.PageContext;
29  
30  /**
31   * <a href="JspFactoryWrapper.java.html"><b><i>View Source</i></b></a>
32   *
33   * @author Shuyang Zhou
34   */
35  public class JspFactoryWrapper extends JspFactory {
36  
37      public JspFactoryWrapper(JspFactory jspFactory) {
38          _jspFactory = jspFactory;
39      }
40  
41      public JspEngineInfo getEngineInfo() {
42          return _jspFactory.getEngineInfo();
43      }
44  
45      public JspApplicationContext getJspApplicationContext(
46          ServletContext servletContext) {
47  
48          return _jspFactory.getJspApplicationContext(servletContext);
49      }
50  
51      public PageContext getPageContext(
52          Servlet servlet, ServletRequest servletRequest,
53          ServletResponse servletResponse, String errorPageURL,
54          boolean needsSession, int buffer, boolean autoflush) {
55  
56          PageContext pageContext = _jspFactory.getPageContext(
57              servlet, servletRequest, servletResponse, errorPageURL,
58              needsSession, _JSP_WRITER_BUFFER_SIZE, autoflush);
59  
60          return new PageContextWrapper(pageContext);
61      }
62  
63      public void releasePageContext(PageContext pageContext) {
64          if (pageContext instanceof PageContextWrapper) {
65              PageContextWrapper pageContextWrapper =
66                  (PageContextWrapper)pageContext;
67  
68              pageContext = pageContextWrapper.getWrappedPageContext();
69          }
70  
71          _jspFactory.releasePageContext(pageContext);
72      }
73  
74      private static final int _JSP_WRITER_BUFFER_SIZE = GetterUtil.getInteger(
75          PropsUtil.get(PropsKeys.JSP_WRITER_BUFFER_SIZE));
76  
77      private JspFactory _jspFactory;
78  
79  }