costin 01/06/16 14:02:35
Added: jasper34/liaison/org/apache/jasper34/servlet
JspServletWrapper.java
Log:
Split JspServletWrapper out of JspServlet, cleaned up a bit.
JspServlet acts as a servlet container for the generated JSPs, since the container
might not expose the needed API.
( if it does - it's better to implement the Liaison and use the JspIntereptor model)
This needs more testing and merging of fixes from the real container.
Revision Changes Path
1.1
jakarta-tomcat-jasper/jasper34/liaison/org/apache/jasper34/servlet/JspServletWrapper.java
Index: JspServletWrapper.java
===================================================================
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.jasper34.servlet;
import javax.servlet.Servlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.SingleThreadModel;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.HttpJspPage;
import javax.servlet.jsp.JspFactory;
import java.util.Hashtable;
import java.util.Enumeration;
import java.io.File;
import java.io.PrintWriter;
import java.io.IOException;
import java.io.FileNotFoundException;
import org.apache.jasper34.runtime.*;
import org.apache.jasper34.core.*;
import org.apache.jasper34.generator.*;
import org.apache.jasper34.jsptree.*;
import org.apache.jasper34.liaison.*;
import org.apache.jasper34.core.Compiler;
import org.apache.tomcat.util.log.Log;
/** Stores extra informations about the generated servlet.
*/
public class JspServletWrapper {
Servlet theServlet;
String jspUri;
boolean isErrorPage;
// ServletWrapper will set this
Class servletClass;
ContainerLiaison containerL;
Mangler mangler;
JspPageInfo pageInfo;
JspServletWrapper(String jspUri, boolean isErrorPage) {
this.jspUri = jspUri;
this.isErrorPage = isErrorPage;
this.theServlet = null;
}
void load(ServletConfig config) throws JasperException, ServletException {
try {
String className=pageInfo.getMangler().getServletClassName();
// XXX Implement Glenn's one class loader / jsp
ClassLoader loader=containerL.getClassLoader();
servletClass =loader.loadClass(className);
// Class servletClass = (Class) loadedJSPs.get(jspUri);
// This is to maintain the original protocol.
destroy();
theServlet = (Servlet) servletClass.newInstance();
} catch (Exception ex) {
throw new JasperException(ex);
}
theServlet.init(config);
// if (theServlet instanceof HttpJspBase) {
// HttpJspBase h = (HttpJspBase) theServlet;
// h.setClassLoader(JspServlet.this.parentClassLoader);
// }
}
void initWrapper( ServletContext context, Options options,
HttpServletRequest req, HttpServletResponse res)
{
if( containerL == null )
containerL=new JspEngineContext( options.getClassPath(),
context, jspUri,
isErrorPage, options, req, res);
if( mangler==null )
mangler=new Mangler33(containerL.getOutputDir(),
containerL.getRealPath("/"), jspUri);
// if( pageInfo==null ) {
pageInfo=new JspPageInfo( containerL, options, mangler );
pageInfo.setJspFile( jspUri );
pageInfo.setErrorPage( isErrorPage );
// }
}
/**
* Determines whether the current JSP class is older than the JSP file
* from whence it came
*/
boolean isOutDated()
{
// XXX remember if the compilation was attempted and failed -
// and return the old message
boolean outDated=false;
File jsp=new File( jspUri );
File jspReal = null;
if( theServlet==null ) return true;
if( servletClass==null ) return true;
String realPath = containerL.getRealPath(jsp.getPath());
if (realPath == null) {
System.out.println("JspServletWrapper Special case:"
+ " realPath == null " +
jsp.getPath());
return true;
}
jspReal = new File(realPath);
if(!jspReal.exists()){
System.out.println("JspServletWrapper Special case:"
+ " jspReal doesn't exist " +
jsp.getPath());
return true;
}
File classFile = new File(mangler.getClassFileName());
if (classFile.exists()) {
outDated = classFile.lastModified() < jspReal.lastModified();
} else {
outDated = true;
}
return outDated;
}
public void service(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
{
if (theServlet instanceof SingleThreadModel) {
// sync on the wrapper so that the freshness
// of the page is determined right before servicing
synchronized (this) {
theServlet.service(request, response);
}
} else {
theServlet.service(request, response);
}
return;
}
public void destroy() {
if (theServlet != null)
theServlet.destroy();
}
}
