org.apache.hadoop.hive.ql.exec.vector

Class DateColumnVector

java.lang.Object

org.apache.hadoop.hive.ql.exec.vector.ColumnVector

org.apache.hadoop.hive.ql.exec.vector.LongColumnVector

org.apache.hadoop.hive.ql.exec.vector.DateColumnVector

public class DateColumnVector
extends LongColumnVector

This class extends LongColumnVector in order to introduce some date-specific semantics. In DateColumnVector, the elements of vector[] represent the days since 1970-01-01

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.exec.vector.ColumnVector

ColumnVector.Type

Field Summary

Fields inherited from class org.apache.hadoop.hive.ql.exec.vector.LongColumnVector

NULL_VALUE, vector

Fields inherited from class org.apache.hadoop.hive.ql.exec.vector.ColumnVector

isNull, isRepeating, noNulls, type

Constructor Summary

Constructors

Constructor and Description
DateColumnVector()
DateColumnVector(int len) Don't use this except for testing purposes.

Method Summary

Modifier and Type	Method and Description
void	changeCalendar(boolean useProleptic, boolean updateData) Change the calendar to or from proleptic.
String	formatDate(int i)
boolean	isUsingProlepticCalendar() Detect whether this data is using the proleptic calendar.
DateColumnVector	setUsingProlepticCalendar(boolean usingProlepticCalendar)
void	shallowCopyTo(ColumnVector otherCv) Shallow copy of the contents of this vector to the other vector; replaces other vector's values.

Methods inherited from class org.apache.hadoop.hive.ql.exec.vector.LongColumnVector

copySelected, copySelected, ensureSize, fill, fillWithNulls, flatten, setElement, stringifyValue

Methods inherited from class org.apache.hadoop.hive.ql.exec.vector.ColumnVector

decRef, flattenNoNulls, flattenPush, flattenRepeatingNulls, getRef, incRef, init, reset, setRepeating, unFlatten

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DateColumnVector

public DateColumnVector()

DateColumnVector

public DateColumnVector(int len)

Don't use this except for testing purposes.

Parameters:

len - the number of rows

Method Detail

changeCalendar

public void changeCalendar(boolean useProleptic,
                           boolean updateData)

Change the calendar to or from proleptic. If the new and old values of the flag are the same, nothing is done. useProleptic - set the flag for the proleptic calendar updateData - change the data to match the new value of the flag.

formatDate

public String formatDate(int i)

setUsingProlepticCalendar

public DateColumnVector setUsingProlepticCalendar(boolean usingProlepticCalendar)

isUsingProlepticCalendar

public boolean isUsingProlepticCalendar()

Detect whether this data is using the proleptic calendar.

shallowCopyTo

public void shallowCopyTo(ColumnVector otherCv)

Description copied from class: ColumnVector

Shallow copy of the contents of this vector to the other vector; replaces other vector's values.

Overrides:

shallowCopyTo in class LongColumnVector