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Java > Open Source Codes > org > springframework > jdbc > support > incrementer > PostgreSQLSequenceMaxValueIncrementer


1 /*
2  * Copyright 2002-2005 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.jdbc.support.incrementer;
18
19 import javax.sql.DataSource JavaDoc;
20
21 /**
22  * Class to retrieve the next value of a given PostgreSQL Sequence.
23  *
24  * @author Tomislav Urban
25  * @author Juergen Hoeller
26  */
27 public class PostgreSQLSequenceMaxValueIncrementer extends AbstractSequenceMaxValueIncrementer {
28
29     /**
30      * Default constructor.
31      **/
32     public PostgreSQLSequenceMaxValueIncrementer() {
33     }
34
35     /**
36      * Convenience constructor.
37      * @param ds the DataSource to use
38      * @param incrementerName the name of the sequence/table to use
39      */
40     public PostgreSQLSequenceMaxValueIncrementer(DataSource JavaDoc ds, String JavaDoc incrementerName) {
41         setDataSource(ds);
42         setIncrementerName(incrementerName);
43         afterPropertiesSet();
44     }
45
46     protected String JavaDoc getSequenceQuery() {
47         return "select nextval('" + getIncrementerName() + "')";
48     }
49
50 }
51
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