io.trino.operator.scalar.timestamptz.ToUnixTime 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.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.spi.type.DateTimeEncoding.unpackMillisUtc;
import static io.trino.type.DateTimes.MILLISECONDS_PER_SECOND;
import static io.trino.type.DateTimes.PICOSECONDS_PER_SECOND;
@ScalarFunction("to_unixtime")
public final class ToUnixTime
{
private ToUnixTime() {}
@LiteralParameters("p")
@SqlType(StandardTypes.DOUBLE)
public static double toUnixTime(@SqlType("timestamp(p) with time zone") long timestamp)
{
return unpackMillisUtc(timestamp) * 1.0 / MILLISECONDS_PER_SECOND;
}
@LiteralParameters("p")
@SqlType(StandardTypes.DOUBLE)
public static double toUnixTime(@SqlType("timestamp(p) with time zone") LongTimestampWithTimeZone timestamp)
{
return timestamp.getEpochMillis() * 1.0 / MILLISECONDS_PER_SECOND + timestamp.getPicosOfMilli() * 1.0 / PICOSECONDS_PER_SECOND;
}
}