Package org.apache.jorphan.util

Class AlphaNumericComparator<T>

java.lang.Object

org.apache.jorphan.util.AlphaNumericComparator<T>

All Implemented Interfaces:

Comparator<T>

public class AlphaNumericComparator<T>
extends Object
implements Comparator<T>

Comparator for Objects, that compares based on their converted values. The objects will be converted to a String value using the given Function. That value 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	Description
static final Comparator<?>	TO_STRING_COMPARATOR

Constructor Summary

Constructors

Constructor	Description
AlphaNumericComparator(Function<? super T,String> converter)	Constructs a comparator with a converter function

Method Summary

Modifier and Type	Method	Description
int	compare(T o1, T 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

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

Field Details

TO_STRING_COMPARATOR

public static final Comparator<?> TO_STRING_COMPARATOR

Constructor Details

AlphaNumericComparator

public AlphaNumericComparator(Function<? super T,String> converter)

Constructs a comparator with a converter function

Parameters:

converter - that generates a String value from the arguments given to Comparator.compare(Object, Object)

Method Details

compare

public int compare(T o1,
 T o2)

Specified by:

compare in interface Comparator<T>