/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
* limitations under the License.
*
* Other licenses:
* -----------------------------------------------------------------------------
* Commercial licenses for this work are available. These replace the above
* ASL 2.0 and offer limited warranties, support, maintenance, and commercial
* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
*
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package org.jooq.impl;
import static org.jooq.impl.DSL.inline;
import static org.jooq.impl.DSL.keyword;
import static org.jooq.impl.DSL.sql;
import java.sql.Date;
import org.jooq.Configuration;
import org.jooq.DatePart;
import org.jooq.Field;
import org.jooq.QueryPart;
/**
* @author Lukas Eder
*/
final class DateAdd<T extends java.util.Date> extends AbstractFunction<T> {
/**
* Generated UID
*/
private static final long serialVersionUID = -19593015886723235L;
private final Field<T> date;
private final Field<? extends Number> interval;
private final DatePart datePart;
DateAdd(Field<T> date, Field<? extends Number> interval, DatePart datePart) {
super("dateadd", date.getDataType());
this.date = date;
this.interval = interval;
this.datePart = datePart;
}
@Override
final QueryPart getFunction0(Configuration configuration) {
String keyword = null;
switch (configuration.family()) {
case CUBRID:
case MARIADB:
case MYSQL: {
switch (datePart) {
case YEAR: keyword = "year"; break;
case MONTH: keyword = "month"; break;
case DAY: keyword = "day"; break;
case HOUR: keyword = "hour"; break;
case MINUTE: keyword = "minute"; break;
case SECOND: keyword = "second"; break;
default: throwUnsupported();
}
return DSL.field("{date_add}({0}, {interval} {1} {2})", getDataType(), date, interval, keyword(keyword));
}
case DERBY:
case HSQLDB: {
switch (datePart) {
case YEAR: keyword = "sql_tsi_year"; break;
case MONTH: keyword = "sql_tsi_month"; break;
case DAY: keyword = "sql_tsi_day"; break;
case HOUR: keyword = "sql_tsi_hour"; break;
case MINUTE: keyword = "sql_tsi_minute"; break;
case SECOND: keyword = "sql_tsi_second"; break;
default: throwUnsupported();
}
return DSL.field("{fn {timestampadd}({0}, {1}, {2}) }", getDataType(), keyword(keyword), interval, date);
}
case FIREBIRD: {
switch (datePart) {
case YEAR: keyword = "year"; break;
case MONTH: keyword = "month"; break;
case DAY: keyword = "day"; break;
case HOUR: keyword = "hour"; break;
case MINUTE: keyword = "minute"; break;
case SECOND: keyword = "second"; break;
default: throwUnsupported();
}
return DSL.field("{dateadd}({0}, {1}, {2})", getDataType(), keyword(keyword), interval, date);
}
case H2: {
switch (datePart) {
case YEAR: keyword = "year"; break;
case MONTH: keyword = "month"; break;
case DAY: keyword = "day"; break;
case HOUR: keyword = "hour"; break;
case MINUTE: keyword = "minute"; break;
case SECOND: keyword = "second"; break;
default: throwUnsupported();
}
return DSL.field("{dateadd}({0}, {1}, {2})", getDataType(), inline(keyword), interval, date);
}
case POSTGRES: {
switch (datePart) {
case YEAR: keyword = " year"; break;
case MONTH: keyword = " month"; break;
case DAY: keyword = " day"; break;
case HOUR: keyword = " hour"; break;
case MINUTE: keyword = " minute"; break;
case SECOND: keyword = " second"; break;
default: throwUnsupported();
}
// [#3824] Ensure that the output for DATE arithmetic will also
// be of type DATE, not TIMESTAMP
if (getDataType().getType() == Date.class)
return DSL.field("({0} + ({1} || {2})::interval)::date", getDataType(), date, interval, inline(keyword));
else
return DSL.field("({0} + ({1} || {2})::interval)", getDataType(), date, interval, inline(keyword));
}
case SQLITE: {
switch (datePart) {
case YEAR: keyword = " year"; break;
case MONTH: keyword = " month"; break;
case DAY: keyword = " day"; break;
case HOUR: keyword = " hour"; break;
case MINUTE: keyword = " minute"; break;
case SECOND: keyword = " second"; break;
default: throwUnsupported();
}
return DSL.field("{datetime}({0}, '+' || {1} || {2})", getDataType(), date, interval, inline(keyword));
}
}
return null;
}
private final void throwUnsupported() {
throw new UnsupportedOperationException("Unknown date part : " + datePart);
}
}