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 HSQL sequence. 024 * 025 * <p>Thanks to Guillaume Bilodeau for the suggestion! 026 * 027 * <p><b>NOTE:</b> This is an alternative to using a regular table to support 028 * generating unique keys that was necessary in previous versions of HSQL. 029 * 030 * @author Thomas Risberg 031 * @since 2.5 032 * @see HsqlMaxValueIncrementer 033 */ 034public class HsqlSequenceMaxValueIncrementer extends AbstractSequenceMaxValueIncrementer { 035 036 /** 037 * Default constructor for bean property style usage. 038 * @see #setDataSource 039 * @see #setIncrementerName 040 */ 041 public HsqlSequenceMaxValueIncrementer() { 042 } 043 044 /** 045 * Convenience constructor. 046 * @param dataSource the DataSource to use 047 * @param incrementerName the name of the sequence/table to use 048 */ 049 public HsqlSequenceMaxValueIncrementer(DataSource dataSource, String incrementerName) { 050 super(dataSource, incrementerName); 051 } 052 053 054 @Override 055 protected String getSequenceQuery() { 056 return "call next value for " + getIncrementerName(); 057 } 058 059}