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/*
* Copyright (c) 1997-2018 Oracle and/or its affiliates. All rights reserved.
* Copyright 2004 The Apache Software Foundation
*
* 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 javax.servlet;
import java.io.IOException;
/**
* A FilterChain is an object provided by the servlet container to the developer
* giving a view into the invocation chain of a filtered request for a resource. Filters
* use the FilterChain to invoke the next filter in the chain, or if the calling filter
* is the last filter in the chain, to invoke the resource at the end of the chain.
*
* @see Filter
* @since Servlet 2.3
*/
public interface FilterChain {
/**
* Causes the next filter in the chain to be invoked, or if the calling filter is the last filter
* in the chain, causes the resource at the end of the chain to be invoked.
*
* @param request the request to pass along the chain.
* @param response the response to pass along the chain.
* @throws IOException if an I/O related error has occurred during the processing
* @throws ServletException if an exception has occurred that interferes with the
* filterChain's normal operation
*/
public void doFilter(ServletRequest request, ServletResponse response) throws IOException, ServletException;
}