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}