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.camel;
018    
019    
020    /**
021     * The callback interface for an {@link AsyncProcessor} so that it can
022     * notify you when an {@link Exchange} has completed. 
023     */
024    public interface AsyncCallback {
025        
026        /**
027         * This method is invoked once the Exchange is completed.  If an error 
028         * occurred while processing the exchange, the exception field of the 
029         * {@link Exchange} being processed will hold the error. 
030         *  
031         * @param doneSynchronously set to true if the processing of the exchange was completed synchronously thread.
032         */
033        void done(boolean doneSynchronously);    
034        
035    }