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}