/*
* Copyright 2002-2009 the original author or authors.
*
* Licensed 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.springframework.mock.web;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.springframework.util.Assert;
/**
* Implementation of the {@link javax.servlet.FilterConfig} interface which
* simply passes the call through to a given Filter/FilterChain combination
* (indicating the next Filter in the chain along with the FilterChain that it is
* supposed to work on) or to a given Servlet (indicating the end of the chain).
*
* @author Juergen Hoeller
* @since 2.0.3
* @see javax.servlet.Filter
* @see javax.servlet.Servlet
* @see MockFilterChain
*/
public class PassThroughFilterChain implements FilterChain {
private Filter filter;
private FilterChain nextFilterChain;
private Servlet servlet;
/**
* Create a new PassThroughFilterChain that delegates to the given Filter,
* calling it with the given FilterChain.
* @param filter the Filter to delegate to
* @param nextFilterChain the FilterChain to use for that next Filter
*/
public PassThroughFilterChain(Filter filter, FilterChain nextFilterChain) {
Assert.notNull(filter, "Filter must not be null");
Assert.notNull(nextFilterChain, "'FilterChain must not be null");
this.filter = filter;
this.nextFilterChain = nextFilterChain;
}
/**
* Create a new PassThroughFilterChain that delegates to the given Servlet.
* @param servlet the Servlet to delegate to
*/
public PassThroughFilterChain(Servlet servlet) {
Assert.notNull(servlet, "Servlet must not be null");
this.servlet = servlet;
}
/**
* Pass the call on to the Filter/Servlet.
*/
public void doFilter(ServletRequest request, ServletResponse response) throws ServletException, IOException {
if (this.filter != null) {
this.filter.doFilter(request, response, this.nextFilterChain);
}
else {
this.servlet.service(request, response);
}
}
}
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