org.apache.jorphan.util

Class AlphaNumericKeyComparator

java.lang.Object

org.apache.jorphan.util.AlphaNumericKeyComparator

All Implemented Interfaces:

Comparator<Map.Entry<Object,Object>>

public class AlphaNumericKeyComparator
extends Object
implements Comparator<Map.Entry<Object,Object>>

Comparator for Map.Entry Objects, that compares based on their keys only. The keys will be compared in a human readable fashion by trying to parse numbers that appear in the keys as integers and compare those, too.

Heavily influenced by https://codereview.stackexchange.com/questions/37192/number-aware-string-sorting-with-comparator

Field Summary

Fields

Modifier and Type	Field and Description
static AlphaNumericKeyComparator	INSTANCE

Method Summary

Modifier and Type	Method and Description
int	compare(Map.Entry<Object,Object> o1, Map.Entry<Object,Object> o2)

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

Field Detail

INSTANCE

public static final AlphaNumericKeyComparator INSTANCE

Method Detail

compare

public int compare(Map.Entry<Object,Object> o1,
                   Map.Entry<Object,Object> o2)

Specified by:

compare in interface Comparator<Map.Entry<Object,Object>>