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Java > Open Source Codes > org > springframework > dao > IncorrectUpdateSemanticsDataAccessException


1 /*
2  * Copyright 2002-2006 the original author or authors.
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 package org.springframework.dao;
18
19 /**
20  * Data access exception thrown when something unintended appears to have
21  * happened with an update, but the transaction hasn't already been rolled back.
22  * Thrown, for example, when we wanted to update 1 row in an RDBMS but actually
23  * updated 3.
24  *
25  * @author Rod Johnson
26  */
27 public class IncorrectUpdateSemanticsDataAccessException extends InvalidDataAccessResourceUsageException {
28
29     /**
30      * Constructor for IncorrectUpdateSemanticsDataAccessException.
31      * @param msg the detail message
32      */
33     public IncorrectUpdateSemanticsDataAccessException(String JavaDoc msg) {
34         super(msg);
35     }
36
37     /**
38      * Constructor for IncorrectUpdateSemanticsDataAccessException.
39      * @param msg the detail message
40      * @param cause the root cause from the underlying API, such as JDBC
41      */
42     public IncorrectUpdateSemanticsDataAccessException(String JavaDoc msg, Throwable JavaDoc cause) {
43         super(msg, cause);
44     }
45     
46     /**
47      * Return whether data was updated.
48      * If this method returns false, there's nothing to roll back.
49      * <p>The default implementation always returns true.
50      * This can be overridden in subclasses.
51      */
52     public boolean wasDataUpdated() {
53         return true;
54     }
55
56 }
57
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