/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.server.webapp;
import com.caucho.server.http.CauchoResponse;
import com.caucho.server.http.RequestAdapter;
import com.caucho.util.L10N;
import javax.servlet.FilterChain;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.ServletRequestWrapper;
import javax.servlet.ServletResponseWrapper;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
class NamedDispatcherImpl implements RequestDispatcher {
private static final L10N L = new L10N(NamedDispatcherImpl.class);
private WebApp _webApp;
private FilterChain _includeFilterChain;
private FilterChain _forwardFilterChain;
private String _queryString;
NamedDispatcherImpl(FilterChain includeFilterChain,
FilterChain forwardFilterChain,
String queryString, WebApp webApp)
{
_includeFilterChain = includeFilterChain;
_forwardFilterChain = forwardFilterChain;
_queryString = queryString;
_webApp = webApp;
}
public void include(ServletRequest topRequest, ServletResponse topResponse)
throws IOException, ServletException
{
HttpServletRequest parentReq;
ServletRequestWrapper reqWrapper = null;
if (topRequest instanceof ServletRequestWrapper) {
ServletRequest request = topRequest;
while (request instanceof ServletRequestWrapper) {
reqWrapper = (ServletRequestWrapper) request;
request = ((ServletRequestWrapper) request).getRequest();
}
parentReq = (HttpServletRequest) request;
} else if (topRequest instanceof HttpServletRequest) {
parentReq = (HttpServletRequest) topRequest;
} else {
throw new IllegalStateException(L.l(
"expected instance of ServletRequestWrapper at `{0}'", topResponse));
}
HttpServletResponse parentRes;
ServletResponseWrapper resWrapper = null;
if (topResponse instanceof ServletResponseWrapper) {
ServletResponse response = topResponse;
while (response instanceof ServletResponseWrapper) {
resWrapper = (ServletResponseWrapper) response;
response = ((ServletResponseWrapper) response).getResponse();
}
parentRes = (HttpServletResponse) response;
} else if (topResponse instanceof HttpServletResponse) {
parentRes = (HttpServletResponse) topResponse;
} else {
throw new IllegalStateException(L.l(
"expected instance of ServletResponse at `{0}'", topResponse));
}
RequestAdapter subRequest = RequestAdapter.create();
subRequest.init(parentReq, parentRes, _webApp);
DispatchResponse subResponse = new DispatchResponse();
subResponse.init(parentRes);
if (reqWrapper != null) {
reqWrapper.setRequest(subRequest);
} else {
topRequest = subRequest;
}
if (resWrapper != null) {
resWrapper.setResponse(subResponse);
} else {
topResponse = subResponse;
}
try {
_includeFilterChain.doFilter(topRequest, topResponse);
} finally {
subResponse.finish();
RequestAdapter.free(subRequest);
if (reqWrapper != null)
reqWrapper.setRequest(parentReq);
if (resWrapper != null)
resWrapper.setResponse(parentRes);
}
//_includeFilterChain.doFilter(req, new DispatchResponse(res));
//AbstractResponseStream s = res.getResponseStream();
// s.setDisableClose(true);
/* XXX:
DispatchResponse subResponse = DispatchResponse.createDispatch();
// XXX: subResponse.init(req);
subResponse.setNextResponse(res);
// subResponse.init(req, s);
subResponse.startRequest(null);
try {
_includeFilterChain.doFilter(req, subResponse);
} finally {
subResponse.finishInvocation();
subResponse.finishRequest();
}
if (reqAdapt != null)
RequestAdapter.free(reqAdapt);
DispatchResponse.free(subResponse);
*/
}
/**
* Forward the request to the named servlet.
*/
@Override
public void forward(ServletRequest req, ServletResponse res)
throws ServletException, IOException
{
res.resetBuffer();
res.setContentLength(-1);
_forwardFilterChain.doFilter(req, res);
// this is not in a finally block so we can return a real error message
// if it's not handled.
// server/1328, server/125i
if (res instanceof CauchoResponse) {
CauchoResponse cRes = (CauchoResponse) res;
cRes.close();
}
else {
try {
OutputStream os = res.getOutputStream();
if (os != null)
os.close();
} catch (IllegalStateException e) {
}
try {
PrintWriter out = res.getWriter();
if (out != null)
out.close();
} catch (IllegalStateException e1) {
}
}
/*
ServletResponse ptr = res;
while (ptr instanceof HttpServletResponseWrapper) {
ptr = ((HttpServletResponseWrapper) ptr).getResponse();
if (ptr instanceof AbstractHttpResponse)
((AbstractHttpResponse) ptr).finish();
}
*/
/*
if (res instanceof AbstractHttpResponse)
((AbstractHttpResponse) res).finish(true);
if (res instanceof Response)
((Response) res).finish(true);
*/
}
public String toString()
{
return getClass().getSimpleName() + "[" + _includeFilterChain + "]";
}
}