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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   * DeleteCallback.java
20   *
21   */
22   
23  package javax.jdo.listener;
24  
25  
26  /** 
27   * This interface is used to notify instances of delete events.
28   * @version 2.0
29   * @since 2.0
30   */
31  public interface DeleteCallback
32  {
33      /**
34       * Called before the instance is deleted.
35       * This method is called before the state transition to persistent-deleted 
36       * or persistent-new-deleted. Access to field values within this call 
37       * are valid. Access to field values after this call are disallowed. 
38       * <P>This method is modified by the enhancer so that fields referenced 
39       * can be used in the business logic of the method.
40       */
41      void jdoPreDelete();
42  }