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/*
* 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.LiteralParameter;
import io.trino.spi.function.LiteralParameters;
import io.trino.spi.function.ScalarOperator;
import io.trino.spi.function.SqlType;
import io.trino.spi.type.LongTimestampWithTimeZone;
import io.trino.spi.type.StandardTypes;
import io.trino.type.Constraint;
import static io.trino.spi.function.OperatorType.ADD;
import static io.trino.spi.function.OperatorType.SUBTRACT;
import static io.trino.spi.type.DateTimeEncoding.packDateTimeWithZone;
import static io.trino.spi.type.DateTimeEncoding.unpackMillisUtc;
import static io.trino.spi.type.DateTimeEncoding.unpackZoneKey;
import static io.trino.type.DateTimes.PICOSECONDS_PER_MILLISECOND;
import static io.trino.type.DateTimes.roundToNearest;
import static io.trino.util.DateTimeZoneIndex.unpackChronology;
@SuppressWarnings("UtilityClassWithoutPrivateConstructor")
public final class TimestampWithTimeZoneOperators
{
private TimestampWithTimeZoneOperators() {}
@ScalarOperator(ADD)
public static final class TimestampPlusIntervalDayToSecond
{
@LiteralParameters({"p", "u"})
@SqlType("timestamp(u) with time zone")
@Constraint(variable = "u", expression = "max(3, p)") // Interval is currently p = 3, so the minimum result precision is 3.
public static long add(
@LiteralParameter("p") long precision,
@SqlType("timestamp(p) with time zone") long packedEpochMillis,
@SqlType(StandardTypes.INTERVAL_DAY_TO_SECOND) long interval)
{
return packDateTimeWithZone(unpackMillisUtc(packedEpochMillis) + interval, unpackZoneKey(packedEpochMillis));
}
@LiteralParameters({"p", "u"})
@SqlType("timestamp(u) with time zone")
@Constraint(variable = "u", expression = "max(3, p)") // Interval is currently p = 3, so the minimum result precision is 3.
public static LongTimestampWithTimeZone add(
@SqlType("timestamp(p) with time zone") LongTimestampWithTimeZone timestamp,
@SqlType(StandardTypes.INTERVAL_DAY_TO_SECOND) long interval)
{
return LongTimestampWithTimeZone.fromEpochMillisAndFraction(timestamp.getEpochMillis() + interval, timestamp.getPicosOfMilli(), timestamp.getTimeZoneKey());
}
}
@ScalarOperator(ADD)
public static final class IntervalDayToSecondPlusTimestamp
{
@LiteralParameters({"p", "u"})
@SqlType("timestamp(u) with time zone")
@Constraint(variable = "u", expression = "max(3, p)") // Interval is currently p = 3, so the minimum result precision is 3.
public static long add(
@LiteralParameter("p") long precision,
@SqlType(StandardTypes.INTERVAL_DAY_TO_SECOND) long interval,
@SqlType("timestamp(p) with time zone") long timestamp)
{
return TimestampPlusIntervalDayToSecond.add(precision, timestamp, interval);
}
@LiteralParameters({"p", "u"})
@SqlType("timestamp(u) with time zone")
@Constraint(variable = "u", expression = "max(3, p)") // Interval is currently p = 3, so the minimum result precision is 3.
public static LongTimestampWithTimeZone add(
@SqlType(StandardTypes.INTERVAL_DAY_TO_SECOND) long interval,
@SqlType("timestamp(p) with time zone") LongTimestampWithTimeZone timestamp)
{
return TimestampPlusIntervalDayToSecond.add(timestamp, interval);
}
}
@ScalarOperator(ADD)
public static final class TimestampPlusIntervalYearToMonth
{
@LiteralParameters("p")
@SqlType("timestamp(p) with time zone")
public static long add(
@SqlType("timestamp(p) with time zone") long packedEpochMillis,
@SqlType(StandardTypes.INTERVAL_YEAR_TO_MONTH) long interval)
{
long epochMillis = unpackMillisUtc(packedEpochMillis);
long result = unpackChronology(packedEpochMillis).monthOfYear().add(epochMillis, interval);
return packDateTimeWithZone(result, unpackZoneKey(packedEpochMillis));
}
@LiteralParameters("p")
@SqlType("timestamp(p) with time zone")
public static LongTimestampWithTimeZone add(
@SqlType("timestamp(p) with time zone") LongTimestampWithTimeZone timestamp,
@SqlType(StandardTypes.INTERVAL_YEAR_TO_MONTH) long interval)
{
long epochMillis = timestamp.getEpochMillis();
long result = unpackChronology(timestamp.getTimeZoneKey()).monthOfYear().add(epochMillis, interval);
return LongTimestampWithTimeZone.fromEpochMillisAndFraction(result, timestamp.getPicosOfMilli(), timestamp.getTimeZoneKey());
}
}
@ScalarOperator(ADD)
public static final class IntervalYearToMonthPlusTimestamp
{
@LiteralParameters("p")
@SqlType("timestamp(p) with time zone")
public static long add(
@SqlType(StandardTypes.INTERVAL_YEAR_TO_MONTH) long interval,
@SqlType("timestamp(p) with time zone") long timestamp)
{
return TimestampPlusIntervalYearToMonth.add(timestamp, interval);
}
@LiteralParameters("p")
@SqlType("timestamp(p) with time zone")
public static LongTimestampWithTimeZone add(
@SqlType(StandardTypes.INTERVAL_YEAR_TO_MONTH) long interval,
@SqlType("timestamp(p) with time zone") LongTimestampWithTimeZone timestamp)
{
return TimestampPlusIntervalYearToMonth.add(timestamp, interval);
}
}
@ScalarOperator(SUBTRACT)
public static final class TimestampMinusIntervalYearToMonth
{
@LiteralParameters("p")
@SqlType("timestamp(p) with time zone")
public static long subtract(
@SqlType("timestamp(p) with time zone") long timestamp,
@SqlType(StandardTypes.INTERVAL_YEAR_TO_MONTH) long interval)
{
return TimestampPlusIntervalYearToMonth.add(timestamp, -interval);
}
@LiteralParameters("p")
@SqlType("timestamp(p) with time zone")
public static LongTimestampWithTimeZone subtract(
@SqlType("timestamp(p) with time zone") LongTimestampWithTimeZone timestamp,
@SqlType(StandardTypes.INTERVAL_YEAR_TO_MONTH) long interval)
{
return TimestampPlusIntervalYearToMonth.add(timestamp, -interval);
}
}
@ScalarOperator(SUBTRACT)
public static final class TimestampMinusIntervalDayToSecond
{
@LiteralParameters({"p", "u"})
@SqlType("timestamp(u) with time zone")
@Constraint(variable = "u", expression = "max(3, p)") // Interval is currently p = 3, so the minimum result precision is 3.
public static long subtract(
@LiteralParameter("p") long precision,
@SqlType("timestamp(p) with time zone") long timestamp,
@SqlType(StandardTypes.INTERVAL_DAY_TO_SECOND) long interval)
{
return TimestampPlusIntervalDayToSecond.add(precision, timestamp, -interval);
}
@LiteralParameters({"p", "u"})
@SqlType("timestamp(u) with time zone")
@Constraint(variable = "u", expression = "max(3, p)") // Interval is currently p = 3, so the minimum result precision is 3.
public static LongTimestampWithTimeZone subtract(
@SqlType("timestamp(p) with time zone") LongTimestampWithTimeZone timestamp,
@SqlType(StandardTypes.INTERVAL_DAY_TO_SECOND) long interval)
{
return TimestampPlusIntervalDayToSecond.add(timestamp, -interval);
}
}
@ScalarOperator(SUBTRACT)
public static final class TimestampMinusTimestamp
{
@LiteralParameters("p")
@SqlType(StandardTypes.INTERVAL_DAY_TO_SECOND)
public static long subtract(
@SqlType("timestamp(p) with time zone") long left,
@SqlType("timestamp(p) with time zone") long right)
{
return unpackMillisUtc(left) - unpackMillisUtc(right);
}
@LiteralParameters("p")
@SqlType(StandardTypes.INTERVAL_DAY_TO_SECOND)
public static long subtract(
@SqlType("timestamp(p) with time zone") LongTimestampWithTimeZone left,
@SqlType("timestamp(p) with time zone") LongTimestampWithTimeZone right)
{
long interval = left.getEpochMillis() - right.getEpochMillis();
int deltaPicos = left.getPicosOfMilli() - right.getPicosOfMilli();
if (deltaPicos < 0 && roundToNearest(-deltaPicos, PICOSECONDS_PER_MILLISECOND) == PICOSECONDS_PER_MILLISECOND) {
// borrow and round
interval--;
}
else if (deltaPicos > 0 && roundToNearest(deltaPicos, PICOSECONDS_PER_MILLISECOND) == PICOSECONDS_PER_MILLISECOND) {
// round up
interval++;
}
return interval;
}
}
}
