cascading.util
Class NullNotEquivalentComparator

java.lang.Object
  cascading.util.NullNotEquivalentComparator

All Implemented Interfaces:

Serializable, Comparator<Comparable>

public class NullNotEquivalentComparator
extends Object
implements Comparator<Comparable>, Serializable

Class NullNotEquivalentComparator simply returns -1 if the lhs is null, 1 if the rhs is null, or the result of lhs.compareTo(rhs).

Use this Comparator when performing a CoGroup that needs SQL like semantics.

See Also:

Serialized Form

Constructor Summary

NullNotEquivalentComparator()

Method Summary

int	compare(Comparable lhs, Comparable rhs)

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

NullNotEquivalentComparator

public NullNotEquivalentComparator()

Method Detail

compare

public int compare(Comparable lhs,
                   Comparable rhs)

Specified by:

compare in interface Comparator<Comparable>