/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.hadoop.hive.ql.exec.vector;
import java.util.concurrent.TimeUnit;
import org.apache.hadoop.hive.serde2.io.DateWritable;
import org.apache.hadoop.hive.serde2.io.HiveIntervalDayTimeWritable;
import org.apache.hadoop.hive.serde2.io.TimestampWritable;
public final class TimestampUtils {
static final long MILLISECONDS_PER_SECOND = TimeUnit.SECONDS.toMillis(1);
static final long NANOSECONDS_PER_MILLISECOND = TimeUnit.MILLISECONDS.toNanos(1);
public static long daysToNanoseconds(long daysSinceEpoch) {
return DateWritable.daysToMillis((int) daysSinceEpoch) * NANOSECONDS_PER_MILLISECOND;
}
public static TimestampWritable timestampColumnVectorWritable(
TimestampColumnVector timestampColVector, int elementNum,
TimestampWritable timestampWritable) {
timestampWritable.set(timestampColVector.asScratchTimestamp(elementNum));
return timestampWritable;
}
public static HiveIntervalDayTimeWritable intervalDayTimeColumnVectorWritable(
IntervalDayTimeColumnVector intervalDayTimeColVector, int elementNum,
HiveIntervalDayTimeWritable intervalDayTimeWritable) {
intervalDayTimeWritable.set(intervalDayTimeColVector.asScratchIntervalDayTime(elementNum));
return intervalDayTimeWritable;
}
}