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 }