io.trino.operator.scalar.timetz.ExtractHour 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.timetz;
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.LongTimeWithTimeZone;
import io.trino.spi.type.StandardTypes;
import static io.trino.spi.type.DateTimeEncoding.unpackTimeNanos;
import static io.trino.type.DateTimes.NANOSECONDS_PER_HOUR;
import static io.trino.type.DateTimes.PICOSECONDS_PER_HOUR;
@Description("Hour of the day of the given time")
@ScalarFunction("hour")
public class ExtractHour
{
private ExtractHour() {}
@LiteralParameters("p")
@SqlType(StandardTypes.BIGINT)
public static long extract(@SqlType("time(p) with time zone") long packedTime)
{
return unpackTimeNanos(packedTime) / NANOSECONDS_PER_HOUR;
}
@LiteralParameters("p")
@SqlType(StandardTypes.BIGINT)
public static long extract(@SqlType("time(p) with time zone") LongTimeWithTimeZone time)
{
return time.getPicoseconds() / PICOSECONDS_PER_HOUR;
}
}