Package org.apache.druid.query

Class DimensionComparisonUtils.ArrayComparator<T>

java.lang.Object

org.apache.druid.query.DimensionComparisonUtils.ArrayComparator<T>

All Implemented Interfaces:

Comparator<Object[]>

Direct Known Subclasses:

DimensionComparisonUtils.ArrayComparatorForUnnaturalStringComparator

Enclosing class:

DimensionComparisonUtils

public static class DimensionComparisonUtils.ArrayComparator<T>
extends Object
implements Comparator<Object[]>

Creates a list comparator with custom comparator for the elements. This is used to support weird usecases where the list dimensions can have custom comparators, and cannot be handled with TypeSignature.getNullableStrategy(). These queries can only be generated with native queries.

Constructor Summary

Constructors

Constructor	Description
ArrayComparator(Comparator<T> elementComparator)

Method Summary

Modifier and Type	Method	Description
protected T	coerceElement(Object element)
int	compare(Object[] lhs, Object[] rhs)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

ArrayComparator

public ArrayComparator(Comparator<T> elementComparator)

Method Detail

compare

public int compare(Object[] lhs,
                   Object[] rhs)

Specified by:

compare in interface Comparator<T>

coerceElement

protected T coerceElement(Object element)