001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.servicemix.soap.api;
018    
019    import java.util.Set;
020    
021    
022    public interface Interceptor {
023        
024        /**
025         * Intercepts a message. 
026         * Interceptors need NOT invoke handleMessage or handleFault
027         * on the next interceptor - the interceptor chain will
028         * take care of this.
029         * 
030         * @param message
031         */
032        void handleMessage(Message message);
033        
034        /**
035         * Called for all interceptors (in reverse order) on which handleMessage
036         * had been successfully invoked, when normal execution of the chain was
037         * aborted for some reason.
038         * 
039         * @param message
040         */
041        void handleFault(Message message);
042        
043        /**
044         * A Set of IDs that this interceptor needs to run after.
045         * @return
046         */
047        Set<String> getAfter();
048    
049        /**
050         * A Set of IDs that this interceptor needs to run before.
051         * @return
052         */
053        Set<String> getBefore();
054    
055        /**
056         * The ID of the interceptor.
057         * @return
058         */
059        String getId();
060    
061    }