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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  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  /*
    19   * StoreCallback.java
    20   *
    21   */
    22
    23  package javax.jdo.listener;
    24
    25  /**
    26   * This interface is used to notify instances of store events.
    27   * @version 2.0
    28   * @since 2.0
    29   */
    30  public interface StoreCallback {
    31
    32      /**
    33       * Called before the values are stored from this instance to the
    34       * data store.
    35       *
    36       * <P>Data store fields that might have been affected by modified
    37       * non-persistent fields should be updated in this method.
    38       *
    39       * <P>This method is modified by the enhancer so that changes to
    40       * persistent fields will be reflected in the data store.
    41       * The context in which this call is made allows access to the
    42       * <code>PersistenceManager</code> and other persistent JDO instances.
    43       */
    44      void jdoPreStore();
    45  }