io.trino.operator.scalar.timestamptz.ExtractQuarter Maven / Gradle / Ivy
/*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.trino.operator.scalar.timestamptz;
import io.trino.spi.function.Description;
import io.trino.spi.function.LiteralParameters;
import io.trino.spi.function.ScalarFunction;
import io.trino.spi.function.SqlType;
import io.trino.spi.type.LongTimestampWithTimeZone;
import io.trino.spi.type.StandardTypes;
import static io.trino.operator.scalar.QuarterOfYearDateTimeField.QUARTER_OF_YEAR;
import static io.trino.spi.type.DateTimeEncoding.unpackMillisUtc;
import static io.trino.spi.type.TimeZoneKey.getTimeZoneKey;
import static io.trino.util.DateTimeZoneIndex.getChronology;
import static io.trino.util.DateTimeZoneIndex.unpackChronology;
@Description("Quarter of the year of the given timestamp")
@ScalarFunction("quarter")
public class ExtractQuarter
{
private ExtractQuarter() {}
@LiteralParameters("p")
@SqlType(StandardTypes.BIGINT)
public static long extract(@SqlType("timestamp(p) with time zone") long packedEpochMillis)
{
return QUARTER_OF_YEAR.getField(unpackChronology(packedEpochMillis)).get(unpackMillisUtc(packedEpochMillis));
}
@LiteralParameters("p")
@SqlType(StandardTypes.BIGINT)
public static long extract(@SqlType("timestamp(p) with time zone") LongTimestampWithTimeZone timestamp)
{
return QUARTER_OF_YEAR.getField(getChronology(getTimeZoneKey(timestamp.getTimeZoneKey()))).get(timestamp.getEpochMillis());
}
}