com.espertech.esper.util

Class HashableMultiKeyCollatingComparator

java.lang.Object

com.espertech.esper.util.HashableMultiKeyCollatingComparator

All Implemented Interfaces:

MetaDefItem, java.io.Serializable, java.util.Comparator<HashableMultiKey>

public final class HashableMultiKeyCollatingComparator
extends java.lang.Object
implements java.util.Comparator<HashableMultiKey>, MetaDefItem, java.io.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
HashableMultiKeyCollatingComparator(boolean[] isDescendingValues, boolean[] stringTypeValues) Ctor.

Method Summary

Modifier and Type	Method and Description
int	compare(HashableMultiKey firstValues, HashableMultiKey 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

HashableMultiKeyCollatingComparator

public HashableMultiKeyCollatingComparator(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(HashableMultiKey firstValues,
                         HashableMultiKey secondValues)

Specified by:

compare in interface java.util.Comparator<HashableMultiKey>