001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020 // 021 // This source code implements specifications defined by the Java 022 // Community Process. In order to remain compliant with the specification 023 // DO NOT add / change / or delete method signatures! 024 // 025 026 package javax.servlet; 027 028 import java.io.IOException; 029 030 /** 031 * A FilterChain is an object provided by the servlet container to the developer 032 * giving a view into the invocation chain of a filtered request for a resource. Filters 033 * use the FilterChain to invoke the next filter in the chain, or if the calling filter 034 * is the last filter in the chain, to invoke the rosource at the end of the chain. 035 * 036 * @see Filter 037 * @since Servlet 2.3 038 * 039 * @version $Rev: 467553 $ $Date: 2006-10-25 06:01:51 +0200 (Mi, 25. Okt 2006) $ 040 */ 041 public interface FilterChain { 042 /** 043 * Causes the next filter in the chain to be invoked, or if the calling filter is the last filter 044 * in the chain, causes the resource at the end of the chain to be invoked. 045 * 046 * @param request the request to pass along the chain. 047 * @param response the response to pass along the chain. 048 * 049 * @since Servlet 2.3 050 */ 051 public void doFilter(ServletRequest request, ServletResponse response) throws IOException, ServletException; 052 } 053