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Java > Open Source Codes > javax > jdo > listener > ClearCallback


1 /*
2  * Copyright 2005 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 /*
18  * ClearCallback.java
19  *
20  */
21  
22 package javax.jdo.listener;
23
24
25 /**
26  * This interface is used to notify instances of clear events.
27  * @version 2.0
28  * @since 2.0
29  */
30 public interface ClearCallback {
31     
32     /**
33      * Called before the values in the instance are cleared.
34      *
35      * <P>Transient fields should be cleared in this method.
36      * Associations between this
37      * instance and others in the runtime environment should be cleared.
38      *
39      * <P>This method is not modified by the enhancer.
40      */
41     void jdoPreClear();
42 }
43
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