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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.afterinvocation;

import org.acegisecurity.AccessDeniedException;
import org.acegisecurity.Authentication;
import org.acegisecurity.ConfigAttribute;
import org.acegisecurity.ConfigAttributeDefinition;


/**
 * Indicates a class is responsible for participating in an {@link
 * AfterInvocationProviderManager} decision.
 *
 * @author Ben Alex
 * @version $Id: AfterInvocationProvider.java,v 1.2 2005/11/17 00:55:56 benalex Exp $
 */
public interface AfterInvocationProvider {
    //~ Methods ================================================================

    public Object decide(Authentication authentication, Object object,
        ConfigAttributeDefinition config, Object returnedObject)
        throws AccessDeniedException;

    /**
     * Indicates whether this AfterInvocationProvider is able to
     * participate in a decision involving the passed
     * ConfigAttribute.
     * 
     * 
     * This allows the AbstractSecurityInterceptor to check every
     * configuration attribute can be consumed by the configured
     * AccessDecisionManager and/or RunAsManager
     * and/or AccessDecisionManager.
     * 
     *
     * @param attribute a configuration attribute that has been configured
     *        against the AbstractSecurityInterceptor
     *
     * @return true if this AfterInvocationProvider can support
     *         the passed configuration attribute
     */
    public boolean supports(ConfigAttribute attribute);

    /**
     * Indicates whether the AfterInvocationProvider is able to
     * provide "after invocation" processing for the indicated secured object
     * type.
     *
     * @param clazz the class of secure object that is being queried
     *
     * @return true if the implementation can process the indicated class
     */
    public boolean supports(Class clazz);
}