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    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  }