1 /*** 2 * 3 * Copyright 2004 Protique Ltd 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 **/ 18 package org.codehaus.activemq.util; 19 20 /*** 21 * A simple callback object used by the 22 * {@link org.codehaus.activemq.util.TransactionTemplate} 23 * and {@link org.codehaus.activemq.util.ExceptionTemplate} 24 objects to provide automatic transactional or exception handling blocks. 25 * 26 * @version $Revision: 1.1 $ 27 */ 28 public interface Callback { 29 30 /*** 31 * Executes some piece of code within a transaction 32 * performing a commit if there is no exception thrown 33 * else a rollback is performed 34 * 35 * @throws Throwable 36 */ 37 public void execute() throws Throwable; 38 }