org.apache.commons.collections.comparators
Class TransformingComparator

java.lang.Object
  |
  +--org.apache.commons.collections.comparators.TransformingComparator
All Implemented Interfaces:
java.util.Comparator

public class TransformingComparator
extends java.lang.Object
implements java.util.Comparator

Decorates another Comparator with transformation behavior. That is, the return value from the transform operation will be passed to the decorated Comparator#compare method.

See Also:
Transformer, ComparableComparator

Constructor Summary
TransformingComparator(Transformer transformer)
          Constructs an instance with the given Transformer and a ComparableComparator.
TransformingComparator(Transformer transformer, java.util.Comparator decorated)
          Constructs an instance with the given Transformer and Comparator
 
Method Summary
 int compare(java.lang.Object o1, java.lang.Object o2)
          Returns the result of comparing the values from the transform operation.
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface java.util.Comparator
equals
 

Constructor Detail

TransformingComparator

public TransformingComparator(Transformer transformer)
Constructs an instance with the given Transformer and a ComparableComparator.

Parameters:
transformer - what will transform the instance.

TransformingComparator

public TransformingComparator(Transformer transformer,
                              java.util.Comparator decorated)
Constructs an instance with the given Transformer and Comparator

Parameters:
decorated - the decorated Comparator
Method Detail

compare

public int compare(java.lang.Object o1,
                   java.lang.Object o2)
Returns the result of comparing the values from the transform operation.

Specified by:
compare in interface java.util.Comparator
Returns:
the result of comparing the values from the transform operation


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