001    package org.apache.archiva.transaction;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information
007     * regarding copyright ownership.  The ASF licenses this file
008     * to you under the Apache License, Version 2.0 (the
009     * "License"); you may not use this file except in compliance
010     * with the License.  You may obtain a copy of the License at
011     *
012     *   http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing,
015     * software distributed under the License is distributed on an
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017     * KIND, either express or implied.  See the License for the
018     * specific language governing permissions and limitations
019     * under the License.
020     */
021    
022    import java.io.IOException;
023    
024    /**
025     * Interface for individual events in a transaction.
026     *
027     */
028    public interface TransactionEvent
029    {
030        /**
031         * Commit this event.
032         *
033         * @throws IOException if an error occurred committing the change
034         */
035        void commit()
036            throws IOException;
037    
038        /**
039         * Rollback the even already committed.
040         *
041         * @throws IOException if an error occurred reverting the change
042         */
043        void rollback()
044            throws IOException;
045    }