org.apache.arrow.algorithm.sort

Class DefaultVectorComparators.RepeatedValueComparator<T extends ValueVector>

java.lang.Object

org.apache.arrow.algorithm.sort.VectorValueComparator<BaseRepeatedValueVector>

org.apache.arrow.algorithm.sort.DefaultVectorComparators.RepeatedValueComparator<T>

Type Parameters:

T - inner vector type.

Enclosing class:

DefaultVectorComparators

public static class DefaultVectorComparators.RepeatedValueComparator<T extends ValueVector>
extends VectorValueComparator<BaseRepeatedValueVector>

Default comparator for BaseRepeatedValueVector. It works by comparing the underlying vector in a lexicographic order.

Field Summary

Fields inherited from class org.apache.arrow.algorithm.sort.VectorValueComparator

valueWidth, vector1, vector2

Constructor Summary

Constructors

Constructor and Description
RepeatedValueComparator(VectorValueComparator<T> innerComparator)

Method Summary

Modifier and Type	Method and Description
void	attachVectors(BaseRepeatedValueVector vector1, BaseRepeatedValueVector vector2) Attach vectors to compare.
int	compareNotNull(int index1, int index2) Compare two values, given their indices.
VectorValueComparator<BaseRepeatedValueVector>	createNew() Creates a comparator of the same type.

Methods inherited from class org.apache.arrow.algorithm.sort.VectorValueComparator

attachVector, checkNullsOnCompare, compare, getValueWidth

Methods inherited from class java.lang.Object

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

Constructor Detail

RepeatedValueComparator

public RepeatedValueComparator(VectorValueComparator<T> innerComparator)

Method Detail

compareNotNull

public int compareNotNull(int index1,
                          int index2)

Description copied from class: VectorValueComparator

Compare two values, given their indices. This is a fast path for comparing non-null values, so the caller must make sure that values at both indices are not null.

Specified by:

compareNotNull in class VectorValueComparator<BaseRepeatedValueVector>

Parameters:

index1 - index of the first value to compare.

index2 - index of the second value to compare.

Returns:

an integer greater than 0, if the first value is greater; an integer smaller than 0, if the first value is smaller; or 0, if both values are equal.

createNew

public VectorValueComparator<BaseRepeatedValueVector> createNew()

Description copied from class: VectorValueComparator

Creates a comparator of the same type.

Specified by:

createNew in class VectorValueComparator<BaseRepeatedValueVector>

Returns:

the newly created comparator.

attachVectors

public void attachVectors(BaseRepeatedValueVector vector1,
                          BaseRepeatedValueVector vector2)

Description copied from class: VectorValueComparator

Attach vectors to compare.

Overrides:

attachVectors in class VectorValueComparator<BaseRepeatedValueVector>

Parameters:

vector1 - the first vector to compare.

vector2 - the second vector to compare.