/*
* $Header: /home/cvspublic/jakarta-tomcat/src/share/org/apache/jasper/runtime/JspFactoryImpl.java,v 1.14 2001/10/20 02:53:39 larryi Exp $
* $Revision: 1.14 $
* $Date: 2001/10/20 02:53:39 $
*
* ====================================================================
*
* 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 apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
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*
* 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
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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.jasper.runtime;
import javax.servlet.Servlet;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.jsp.JspFactory;
import javax.servlet.jsp.JspEngineInfo;
import javax.servlet.jsp.PageContext;
import org.apache.tomcat.util.collections.SimplePool;
import org.apache.tomcat.util.log.*;
/**
* Implementation of JspFactory from the spec. Helps create
* PageContext and other animals.
*
* @author Anil K. Vijendran
*/
public class JspFactoryImpl extends JspFactory {
public static final int DEFAULT_POOL_SIZE=100;
private SimplePool pool;
private boolean usePool=true;
static String lineSeparator;
static {
try {
lineSeparator = System.getProperty("line.separator");
} catch( RuntimeException ex ) {
lineSeparator="\r\n";
}
// This whole things allows us to set the writer line
// separator when we init jasper, i.e. in priv. mode -
// without it we would need a priviledged action.
JspWriterImpl.lineSeparator=lineSeparator;
}
public JspFactoryImpl() {
pool=new SimplePool( DEFAULT_POOL_SIZE );
usePool=true;
}
public JspFactoryImpl( int size ) {
if( size==0 ) {
pool=null;
usePool=false;
} else {
pool=new SimplePool( size );
}
}
Log loghelper = Log.getLog("JASPER_LOG", "JspFactoryImpl");
public PageContext getPageContext(Servlet servlet, ServletRequest request,
ServletResponse response,
String errorPageURL,
boolean needsSession, int bufferSize,
boolean autoflush)
{
try {
PageContext pc;
if( usePool ) {
pc=(PageContext)pool.get();
if( pc == null ) pc= new PageContextImpl(this);
} else {
pc = new PageContextImpl(this);
}
// System.out.println("JspFactoryImpl.getPC" + pc);
pc.initialize(servlet, request, response, errorPageURL,
needsSession, bufferSize, autoflush);
return pc;
} catch (Throwable ex) {
/* FIXME: need to do something reasonable here!! */
loghelper.log("Exception initializing page context", ex);
return null;
}
}
public void releasePageContext(PageContext pc) {
if( pc==null ) return;
pc.release();
if( usePool) {
pool.put( pc );
}
}
static class SunJspEngineInfo extends JspEngineInfo {
public String getSpecificationVersion() {
return "1.1";
}
}
static JspEngineInfo info = new SunJspEngineInfo();
public JspEngineInfo getEngineInfo() {
return info;
}
}