io.trino.operator.scalar.timestamp.TimestampToDateCast 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.connector.ConnectorSession;
import io.trino.spi.function.LiteralParameters;
import io.trino.spi.function.ScalarFunction;
import io.trino.spi.function.ScalarOperator;
import io.trino.spi.function.SqlType;
import io.trino.spi.type.LongTimestamp;
import io.trino.spi.type.StandardTypes;
import static io.trino.spi.function.OperatorType.CAST;
import static io.trino.type.DateTimes.MICROSECONDS_PER_DAY;
import static java.lang.Math.floorDiv;
@ScalarOperator(CAST)
@ScalarFunction("date")
public final class TimestampToDateCast
{
private TimestampToDateCast() {}
@LiteralParameters("p")
@SqlType(StandardTypes.DATE)
public static long cast(ConnectorSession session, @SqlType("timestamp(p)") long timestamp)
{
return floorDiv(timestamp, MICROSECONDS_PER_DAY);
}
@LiteralParameters("p")
@SqlType(StandardTypes.DATE)
public static long cast(ConnectorSession session, @SqlType("timestamp(p)") LongTimestamp timestamp)
{
return cast(session, timestamp.getEpochMicros());
}
}