001 /**
002 *
003 * Copyright 2004 Protique Ltd
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * 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 **/
018 package org.activemq.util;
019
020 /**
021 * A simple callback object used by the
022 * {@link org.activemq.util.TransactionTemplate}
023 * and {@link org.activemq.util.ExceptionTemplate}
024 objects to provide automatic transactional or exception handling blocks.
025 *
026 * @version $Revision: 1.1.1.1 $
027 */
028 public interface Callback {
029
030 /**
031 * Executes some piece of code within a transaction
032 * performing a commit if there is no exception thrown
033 * else a rollback is performed
034 *
035 * @throws Throwable
036 */
037 public void execute() throws Throwable;
038 }