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/* Copyright 2004 Acegi Technology Pty Limited
 *
 * 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 org.acegisecurity.securechannel;

import org.acegisecurity.ConfigAttribute;
import org.acegisecurity.ConfigAttributeDefinition;
import org.acegisecurity.intercept.web.FilterInvocation;

import java.io.IOException;

import javax.servlet.ServletException;


/**
 * Decides whether a web channel meets a specific security condition.
 * 
 * 

* ChannelProcessor implementations are iterated by the {@link * ChannelDecisionManagerImpl}. *

* *

* If an implementation has an issue with the channel security, they should * take action themselves. The callers of the implementation do not take any * action. *

* * @author Ben Alex * @version $Id: ChannelProcessor.java,v 1.2 2005/11/17 00:55:50 benalex Exp $ */ public interface ChannelProcessor { //~ Methods ================================================================ /** * Decided whether the presented {@link FilterInvocation} provides the * appropriate level of channel security based on the requested {@link * ConfigAttributeDefinition}. */ public void decide(FilterInvocation invocation, ConfigAttributeDefinition config) throws IOException, ServletException; /** * Indicates whether this ChannelProcessor is able to process * the passed ConfigAttribute. * *

* This allows the ChannelProcessingFilter to check every * configuration attribute can be consumed by the configured * ChannelDecisionManager. *

* * @param attribute a configuration attribute that has been configured * against the ChannelProcessingFilter * * @return true if this ChannelProcessor can support the * passed configuration attribute */ public boolean supports(ConfigAttribute attribute); }




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