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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.
 */

package org.apache.cxf.interceptor;

import org.apache.cxf.message.Message;

/**
 * Base interface for all interceptors.
 */
public interface Interceptor {
    /**
     * Intercepts a message. 
     * Interceptors should NOT invoke handleMessage or handleFault
     * on the next interceptor - the interceptor chain will
     * take care of this.
     * 
     * @param message
     */
    void handleMessage(T message) throws Fault;
    
    /**
     * Called for all interceptors (in reverse order) on which handleMessage
     * had been successfully invoked, when normal execution of the chain was
     * aborted for some reason.
     * 
     * @param message
     */
    void handleFault(T message);

}