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1   
2   
3   /*
4    * The contents of this file are subject to the terms
5    * of the Common Development and Distribution License
6    * (the "License").  You may not use this file except
7    * in compliance with the License.
8    *
9    * You can obtain a copy of the license at
10   * glassfish/bootstrap/legal/CDDLv1.0.txt or
11   * https://glassfish.dev.java.net/public/CDDLv1.0.html.
12   * See the License for the specific language governing
13   * permissions and limitations under the License.
14   *
15   * When distributing Covered Code, include this CDDL
16   * HEADER in each file and include the License file at
17   * glassfish/bootstrap/legal/CDDLv1.0.txt.  If applicable,
18   * add the following below this CDDL HEADER, with the
19   * fields enclosed by brackets "[]" replaced with your
20   * own identifying information: Portions Copyright [yyyy]
21   * [name of copyright owner]
22   *
23   * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24   *
25   * Portions Copyright Apache Software Foundation.
26   */
27  
28  package javax.servlet;
29  
30  import java.io.IOException;
31  
32      /**
33      * A FilterChain is an object provided by the servlet container to the developer
34      * giving a view into the invocation chain of a filtered request for a resource. Filters
35      * use the FilterChain to invoke the next filter in the chain, or if the calling filter
36      * is the last filter in the chain, to invoke the resource at the end of the chain.
37      *
38      * @see Filter
39      * @since Servlet 2.3
40      **/
41  
42  public interface FilterChain {
43  	
44  	/**
45  	* Causes the next filter in the chain to be invoked, or if the calling filter is the last filter
46  	* in the chain, causes the resource at the end of the chain to be invoked.
47  	*
48  	* @param request the request to pass along the chain.
49  	* @param response the response to pass along the chain.
50  	*
51  	* @since 2.3
52  	*/
53  	
54      public void doFilter ( ServletRequest request, ServletResponse response ) throws IOException, ServletException;
55  
56  }
57