/*
* 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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* 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 java.sql.Date;
import org.jooq.Configuration;
import org.jooq.DatePart;
import org.jooq.Field;
import org.jooq.QueryPart;
/**
* @author Lukas Eder
*/
final class TruncDate<T> extends AbstractFunction<T> {
/**
* Generated UID
*/
private static final long serialVersionUID = -4617792768119885313L;
private final Field<T> date;
private final DatePart part;
TruncDate(Field<T> date, DatePart part) {
super("trunc", date.getDataType());
this.date = date;
this.part = part;
}
@Override
final QueryPart getFunction0(Configuration configuration) {
String keyword = null;
String format = null;
switch (configuration.family()) {
// [http://jira.cubrid.org/browse/ENGINE-120] This currently doesn't work for all date parts in CUBRID
case CUBRID:
case HSQLDB: {
switch (part) {
case YEAR: keyword = "YY"; break;
case MONTH: keyword = "MM"; break;
case DAY: keyword = "DD"; break;
case HOUR: keyword = "HH"; break;
case MINUTE: keyword = "MI"; break;
case SECOND: keyword = "SS"; break;
default: throwUnsupported();
}
return DSL.field("{trunc}({0}, {1})", getDataType(), date, inline(keyword));
}
case H2: {
switch (part) {
case YEAR: format = "yyyy"; break;
case MONTH: format = "yyyy-MM"; break;
case DAY: format = "yyyy-MM-dd"; break;
case HOUR: format = "yyyy-MM-dd HH"; break;
case MINUTE: format = "yyyy-MM-dd HH:mm"; break;
case SECOND: format = "yyyy-MM-dd HH:mm:ss"; break;
default: throwUnsupported();
}
return DSL.field("{parsedatetime}({formatdatetime}({0}, {1}), {1})", getDataType(), date, inline(format));
}
// These don't work yet and need better integration-testing:
// ---------------------------------------------------------
// case MARIADB:
// case MYSQL: {
// switch (part) {
// case YEAR: return DSL.field("{str_to_date}({date_format}({0}, '%Y-00-00 00:00:00.0'), '%Y-%m-%d %H:%i:%s.0')", getDataType(), date);
// case MONTH: return DSL.field("{str_to_date}({date_format}({0}, '%Y-%m-00 00:00:00.0'), '%Y-%m-%d %H:%i:%s.0')", getDataType(), date);
// case DAY: return DSL.field("{str_to_date}({date_format}({0}, '%Y-%m-%d 00:00:00.0'), '%Y-%m-%d %H:%i:%s.0')", getDataType(), date);
// case HOUR: return DSL.field("{str_to_date}({date_format}({0}, '%Y-%m-%d %H:00:00.0'), '%Y-%m-%d %H:%i:%s.0')", getDataType(), date);
// case MINUTE: return DSL.field("{str_to_date}({date_format}({0}, '%Y-%m-%d %H:%i:00.0'), '%Y-%m-%d %H:%i:%s.0')", getDataType(), date);
// case SECOND: return DSL.field("{str_to_date}({date_format}({0}, '%Y-%m-%d %H:%i:%s.0'), '%Y-%m-%d %H:%i:%s.0')", getDataType(), date);
// default: throwUnsupported();
// }
// }
case POSTGRES: {
switch (part) {
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_trunc}({0}, {1})", getDataType(), inline(keyword), date);
}
// These don't work yet and need better integration-testing:
// ---------------------------------------------------------
// case SQLITE: {
// switch (part) {
// case YEAR: return DSL.field("{strftime}({0}, '%Y-00-00 00:00:00.0')", getDataType(), date);
// case MONTH: return DSL.field("{strftime}({0}, '%Y-%m-00 00:00:00.0')", getDataType(), date);
// case DAY: return DSL.field("{strftime}({0}, '%Y-%m-%d 00:00:00.0')", getDataType(), date);
// case HOUR: return DSL.field("{strftime}({0}, '%Y-%m-%d %H:00:00.0')", getDataType(), date);
// case MINUTE: return DSL.field("{strftime}({0}, '%Y-%m-%d %H:%i:00.0')", getDataType(), date);
// case SECOND: return DSL.field("{strftime}({0}, '%Y-%m-%d %H:%i:%s.0')", getDataType(), date);
// default: throwUnsupported();
// }
// }
default:
return DSL.field("{trunc}({0}, {1})", getDataType(), date, inline(part.name()));
}
}
private final void throwUnsupported() {
throw new UnsupportedOperationException("Unknown date part : " + part);
}
}