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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   * ClearCallback.java
    20   *
    21   */
    22
    23  package javax.jdo.listener;
    24
    25
    26  /**
    27   * This interface is used to notify instances of clear events.
    28   * @version 2.0
    29   * @since 2.0
    30   */
    31  public interface ClearCallback {
    32
    33      /**
    34       * Called before the values in the instance are cleared.
    35       *
    36       * <P>Transient fields should be cleared in this method.
    37       * Associations between this
    38       * instance and others in the runtime environment should be cleared.
    39       *
    40       * <P>This method is not modified by the enhancer.
    41       */
    42      void jdoPreClear();
    43  }