/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.felix.http.base.internal.dispatch;
import java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;
import org.apache.felix.http.base.internal.handler.FilterHandler;
public final class FilterPipeline
{
private static class FilterRequestWrapper extends HttpServletRequestWrapper
{
public FilterRequestWrapper(HttpServletRequest req)
{
super(req);
}
@Override
public RequestDispatcher getRequestDispatcher(String path)
{
RequestDispatcherProvider provider = (RequestDispatcherProvider) getAttribute(Dispatcher.REQUEST_DISPATCHER_PROVIDER);
RequestDispatcher dispatcher = null;
if (provider != null)
{
dispatcher = provider.getRequestDispatcher(path);
}
return (dispatcher != null) ? dispatcher : super.getRequestDispatcher(path);
}
@Override
public String toString()
{
return getClass().getSimpleName() + "->" + super.getRequest();
}
}
private final FilterHandler[] handlers;
private final ServletPipeline servletPipeline;
public FilterPipeline(FilterHandler[] handlers, ServletPipeline servletPipeline)
{
this.handlers = handlers;
this.servletPipeline = servletPipeline;
}
public void dispatch(HttpServletRequest req, HttpServletResponse res, FilterChain proceedingChain) throws ServletException, IOException
{
FilterChain chain = new InvocationFilterChain(this.handlers, this.servletPipeline, proceedingChain);
if (this.servletPipeline.hasServletsMapped())
{
req = new FilterRequestWrapper(req);
}
chain.doFilter(req, res);
}
}