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The Java Portlet API version 3.0 developed by the Java Community Process JSR-362 Expert Group.
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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.
*/
/*
* This source code implements specifications defined by the Java
* Community Process. In order to remain compliant with the specification
* DO NOT add / change / or delete method signatures!
*/
package javax.portlet.filter;
import java.io.IOException;
import javax.portlet.PortletException;
import javax.portlet.HeaderRequest;
import javax.portlet.HeaderResponse;
/**
*
* A HeaderFilterChain
object is provided by the portlet container
* to give a view into the invocation chain of a
* filtered header request for a portlet. Filters use the HeaderFilterChain
* to invoke the next filter in the chain, or if the calling filter is the
* last filter in the chain, to invoke the portlet at the end of the chain.
*
*
* @since 3.0
*/
public interface HeaderFilterChain {
/**
*
* Causes the next filter in the chain to be invoked,
* or if the calling filter is the last filter in the chain,
* causes the portlet at the end of the chain to be invoked.
*
*
* @param request the current header request.
* @param response the current header response.
*
* @throws IOException if an IO error occurred in the filter processing
* @throws PortletException if a portlet exception occurred in the filter processing
*/
public void doFilter(HeaderRequest request, HeaderResponse response)
throws IOException, PortletException;
}