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/*
* 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 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 error occurs during the processing of the
* request
* @throws ServletException if the processing fails for any other reason
* @since 2.3
*/
public void doFilter(ServletRequest request, ServletResponse response)
throws IOException, ServletException;
}
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