001/* 002 * Copyright 2002-2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.jdbc.support.incrementer; 018 019import javax.sql.DataSource; 020 021/** 022 * {@link DataFieldMaxValueIncrementer} that retrieves the next value 023 * of a given PostgreSQL sequence. 024 * 025 * <p>Thanks to Tomislav Urban for the suggestion! 026 * 027 * @author Juergen Hoeller 028 * @since 4.3.15 029 */ 030public class PostgresSequenceMaxValueIncrementer extends AbstractSequenceMaxValueIncrementer { 031 032 /** 033 * Default constructor for bean property style usage. 034 * @see #setDataSource 035 * @see #setIncrementerName 036 */ 037 public PostgresSequenceMaxValueIncrementer() { 038 } 039 040 /** 041 * Convenience constructor. 042 * @param dataSource the DataSource to use 043 * @param incrementerName the name of the sequence/table to use 044 */ 045 public PostgresSequenceMaxValueIncrementer(DataSource dataSource, String incrementerName) { 046 super(dataSource, incrementerName); 047 } 048 049 050 @Override 051 protected String getSequenceQuery() { 052 return "select nextval('" + getIncrementerName() + "')"; 053 } 054 055}