Class NaturalOrderComparator<T>

java.lang.Object

jodd.util.NaturalOrderComparator<T>

All Implemented Interfaces:

Serializable, Comparator<T>

public class NaturalOrderComparator<T>
extends Object
implements Comparator<T>, Serializable

Probably the best natural strings comparator.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private static final char[]	ACCENT_CHARS
protected final boolean	ignoreAccents
protected final boolean	ignoreCase
protected final boolean	skipSpaces

Constructor Summary

Constructors

Constructor	Description
NaturalOrderComparator()
NaturalOrderComparator(boolean ignoreCase, boolean ignoreAccents, boolean skipSpaces)

Method Summary

Modifier and Type	Method	Description
private static char	charAt(String string, int ndx)	Safe charAt that returns 0 when ndx is out of boundaries.
int	compare(T o1, T o2)
protected int[]	compareDigits(String str1, int ndx1, String str2, int ndx2)	Compare digits at certain position in two strings.
private char	fixAccent(char c)	Fixes accent char.

Methods inherited from class Object

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

Methods inherited from interface Comparator

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

Field Details

ACCENT_CHARS

private static final char[] ACCENT_CHARS

ignoreCase

protected final boolean ignoreCase

ignoreAccents

protected final boolean ignoreAccents

skipSpaces

protected final boolean skipSpaces

Constructor Details

NaturalOrderComparator

public NaturalOrderComparator()

NaturalOrderComparator

public NaturalOrderComparator(boolean ignoreCase,
 boolean ignoreAccents,
 boolean skipSpaces)

Method Details

compareDigits

protected int[] compareDigits(String str1,
 int ndx1,
 String str2,
 int ndx2)

Compare digits at certain position in two strings. The longest run of digits wins. That aside, the greatest value wins.

Returns:

if numbers are different, only 1 element is returned.

compare

public int compare(T o1,
 T o2)

Specified by:

compare in interface Comparator<T>

fixAccent

private char fixAccent(char c)

Fixes accent char.

charAt

private static char charAt(String string,
 int ndx)

Safe charAt that returns 0 when ndx is out of boundaries.