[3009] Add DSL.dateAdd(Field<Date>, Field<? extends Number>, DatePart) and timestampAdd(Field<Timestamp>, Field<? extends Number>, DatePart) for better cross-database datetime arithmetic
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Lukas Eder
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db23122bc8
225
jOOQ/src/main/java/org/jooq/impl/DateAdd.java
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jOOQ/src/main/java/org/jooq/impl/DateAdd.java
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/**
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* Copyright (c) 2009-2014, Data Geekery GmbH (http://www.datageekery.com)
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* All rights reserved.
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*
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* This work is dual-licensed
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* - under the Apache Software License 2.0 (the "ASL")
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* - under the jOOQ License and Maintenance Agreement (the "jOOQ License")
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* =============================================================================
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* You may choose which license applies to you:
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*
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* - If you're using this work with Open Source databases, you may choose
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* either ASL or jOOQ License.
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* - If you're using this work with at least one commercial database, you must
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* choose jOOQ License
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*
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* For more information, please visit http://www.jooq.org/licenses
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*
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* Apache Software License 2.0:
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* -----------------------------------------------------------------------------
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* jOOQ License and Maintenance Agreement:
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* -----------------------------------------------------------------------------
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* Data Geekery grants the Customer the non-exclusive, timely limited and
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* non-transferable license to install and use the Software under the terms of
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* the jOOQ License and Maintenance Agreement.
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*
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* This library is distributed with a LIMITED WARRANTY. See the jOOQ License
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* and Maintenance Agreement for more details: http://www.jooq.org/licensing
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*/
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package org.jooq.impl;
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import static org.jooq.impl.DSL.field;
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import static org.jooq.impl.DSL.inline;
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import static org.jooq.impl.DSL.keyword;
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import org.jooq.Configuration;
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import org.jooq.DatePart;
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import org.jooq.Field;
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import org.jooq.QueryPart;
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import org.jooq.exception.SQLDialectNotSupportedException;
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/**
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* @author Lukas Eder
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*/
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class DateAdd<T extends java.util.Date> extends AbstractFunction<T> {
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/**
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* Generated UID
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*/
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private static final long serialVersionUID = -19593015886723235L;
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private final Field<T> date;
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private final Field<? extends Number> interval;
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private final DatePart datePart;
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DateAdd(Field<T> date, Field<? extends Number> interval, DatePart datePart) {
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super("dateadd", date.getDataType());
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this.date = date;
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this.interval = interval;
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this.datePart = datePart;
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}
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@Override
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final QueryPart getFunction0(Configuration configuration) {
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String keyword = null;
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String function = null;
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switch (configuration.dialect().family()) {
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case CUBRID:
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case MARIADB:
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case MYSQL: {
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switch (datePart) {
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case YEAR: keyword = "year"; break;
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case MONTH: keyword = "month"; break;
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case DAY: keyword = "day"; break;
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case HOUR: keyword = "hour"; break;
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case MINUTE: keyword = "minute"; break;
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case SECOND: keyword = "second"; break;
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default: throwUnsupported();
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}
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return field("{date_add}({0}, {interval} {1} {2})", getDataType(), date, interval, keyword(keyword));
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}
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case DERBY:
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case HSQLDB: {
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switch (datePart) {
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case YEAR: keyword = "sql_tsi_year"; break;
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case MONTH: keyword = "sql_tsi_month"; break;
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case DAY: keyword = "sql_tsi_day"; break;
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case HOUR: keyword = "sql_tsi_hour"; break;
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case MINUTE: keyword = "sql_tsi_minute"; break;
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case SECOND: keyword = "sql_tsi_second"; break;
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default: throwUnsupported();
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}
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return field("{fn {timestampadd}({0}, {1}, {2}) }", getDataType(), keyword(keyword), interval, date);
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}
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case FIREBIRD: {
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switch (datePart) {
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case YEAR: keyword = "year"; break;
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case MONTH: keyword = "month"; break;
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case DAY: keyword = "day"; break;
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case HOUR: keyword = "hour"; break;
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case MINUTE: keyword = "minute"; break;
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case SECOND: keyword = "second"; break;
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default: throwUnsupported();
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}
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return field("{dateadd}({0}, {1}, {2})", getDataType(), keyword(keyword), interval, date);
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}
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case H2: {
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switch (datePart) {
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case YEAR: keyword = "year"; break;
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case MONTH: keyword = "month"; break;
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case DAY: keyword = "day"; break;
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case HOUR: keyword = "hour"; break;
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case MINUTE: keyword = "minute"; break;
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case SECOND: keyword = "second"; break;
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default: throwUnsupported();
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}
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return field("{dateadd}({0}, {1}, {2})", getDataType(), inline(keyword), interval, date);
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}
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case POSTGRES: {
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switch (datePart) {
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case YEAR: keyword = " year"; break;
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case MONTH: keyword = " month"; break;
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case DAY: keyword = " day"; break;
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case HOUR: keyword = " hour"; break;
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case MINUTE: keyword = " minute"; break;
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case SECOND: keyword = " second"; break;
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default: throwUnsupported();
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}
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return date.add(field("({0} || {1})::interval", interval, inline(keyword)));
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}
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case SQLITE: {
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switch (datePart) {
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case YEAR: keyword = " year"; break;
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case MONTH: keyword = " month"; break;
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case DAY: keyword = " day"; break;
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case HOUR: keyword = " hour"; break;
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case MINUTE: keyword = " minute"; break;
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case SECOND: keyword = " second"; break;
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default: throwUnsupported();
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}
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return field("{datetime}({0}, '+' || {1} || {2})", getDataType(), date, interval, inline(keyword));
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}
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/* [pro] xx
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x
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x
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xxxx xxxxxxx x
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xxxxx xxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxx xx xxx xxx xxxxxxxxxxxxxx
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x
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xx [/pro] */
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}
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return null;
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}
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private final void throwUnsupported() {
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throw new UnsupportedOperationException("Unknown date part : " + datePart);
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}
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}
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