io.trino.operator.scalar.timestamp.ExtractWeekOfYear 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.timestamp;
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.LongTimestamp;
import io.trino.spi.type.StandardTypes;
import org.joda.time.chrono.ISOChronology;
import static io.trino.type.DateTimes.scaleEpochMicrosToMillis;
@Description("Week of the year of the given timestamp")
@ScalarFunction(value = "week", alias = "week_of_year")
public class ExtractWeekOfYear
{
private ExtractWeekOfYear() {}
@LiteralParameters("p")
@SqlType(StandardTypes.BIGINT)
public static long extract(@SqlType("timestamp(p)") long timestamp)
{
return ISOChronology.getInstanceUTC().weekOfWeekyear().get(scaleEpochMicrosToMillis(timestamp));
}
@LiteralParameters("p")
@SqlType(StandardTypes.BIGINT)
public static long extract(@SqlType("timestamp(p)") LongTimestamp timestamp)
{
return extract(timestamp.getEpochMicros());
}
}