org.opencms.file.collectors
Class ComparatorInverter

java.lang.Object
  org.opencms.file.collectors.ComparatorInverter

All Implemented Interfaces:

java.util.Comparator

public final class ComparatorInverter
extends java.lang.Object
implements java.util.Comparator

Wrapper around a comparator that inverts comparison results which may e.g. be used to invert sort orders.

This is used to create SortedSet instances that may sort in different order (ascending vs. descending).

Internal comparator result	Transformed result
-1	+1
0	0
+1	-1

Since:

7.0.3

Author:

Achim Westermann

Constructor Summary

ComparatorInverter(java.util.Comparator toInvert)
Creates a comparator that will invert the result of the given comparator.

Method Summary

int	compare(java.lang.Object o1, java.lang.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

equals

Constructor Detail

ComparatorInverter

public ComparatorInverter(java.util.Comparator toInvert)

Creates a comparator that will invert the result of the given comparator.

Parameters:

toInvert - the comparator to invert results of

Method Detail

compare

public int compare(java.lang.Object o1,
                   java.lang.Object o2)

Specified by:

compare in interface java.util.Comparator

See Also:

Comparator.compare(java.lang.Object, java.lang.Object)