com.espertech.esper.util

Class MultiKeyCollatingComparator

java.lang.Object

com.espertech.esper.util.MultiKeyCollatingComparator

All Implemented Interfaces:

MetaDefItem, Serializable, Comparator<MultiKeyUntyped>

public final class MultiKeyCollatingComparator
extends Object
implements Comparator<MultiKeyUntyped>, MetaDefItem, Serializable

A comparator on multikeys with string values and using the Collator for comparing. The multikeys must contain the same number of values.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MultiKeyCollatingComparator(boolean[] isDescendingValues, boolean[] stringTypeValues) Ctor.

Method Summary

Modifier and Type	Method and Description
int	compare(MultiKeyUntyped firstValues, MultiKeyUntyped secondValues)

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

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

MultiKeyCollatingComparator

public MultiKeyCollatingComparator(boolean[] isDescendingValues,
                                   boolean[] stringTypeValues)

Ctor.

Parameters:

isDescendingValues - - each value is true if the corresponding (same index) entry in the multi-keys is to be sorted in descending order. The multikeys to be compared must have the same number of values as this array.

stringTypeValues - true for each string-typed column

Method Detail

compare

public final int compare(MultiKeyUntyped firstValues,
                         MultiKeyUntyped secondValues)

Specified by:

compare in interface Comparator<MultiKeyUntyped>