Package com.google.common.collect

Class NullsLastOrdering<T>

java.lang.Object

com.google.common.collect.Ordering<T>

com.google.common.collect.NullsLastOrdering<T>

All Implemented Interfaces:

java.io.Serializable, java.util.Comparator<T>

@GwtCompatible(serializable=true)
final class NullsLastOrdering<T>
extends Ordering<T>
implements java.io.Serializable

An ordering that treats null as greater than all other values.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.common.collect.Ordering

Ordering.ArbitraryOrdering, Ordering.IncomparableValueException

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Ordering<? super T>	ordering
private static long	serialVersionUID

Fields inherited from class com.google.common.collect.Ordering

LEFT_IS_GREATER, RIGHT_IS_GREATER

Constructor Summary

Constructors

Constructor	Description
NullsLastOrdering(Ordering<? super T> ordering)

Method Summary

Modifier and Type	Method	Description
int	compare(T left, T right)
boolean	equals(java.lang.Object object)
int	hashCode()
<S extends T> Ordering<S>	nullsFirst()	Returns an ordering that treats null as less than all other values and uses this to compare non-null values.
<S extends T> Ordering<S>	nullsLast()	Returns an ordering that treats null as greater than all other values and uses this ordering to compare non-null values.
<S extends T> Ordering<S>	reverse()	Returns the reverse of this ordering; the Ordering equivalent to Collections.reverseOrder(Comparator).
java.lang.String	toString()

Methods inherited from class com.google.common.collect.Ordering

allEqual, arbitrary, binarySearch, compound, compound, explicit, explicit, from, from, greatestOf, greatestOf, immutableSortedCopy, isOrdered, isStrictlyOrdered, leastOf, leastOf, lexicographical, max, max, max, max, min, min, min, min, natural, onKeys, onResultOf, sortedCopy, usingToString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Comparator

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

Field Detail

ordering

final Ordering<? super T> ordering

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

NullsLastOrdering

NullsLastOrdering(Ordering<? super T> ordering)

Method Detail

compare

public int compare(T left,
                   T right)

Specified by:

compare in interface java.util.Comparator<T>

Specified by:

compare in class Ordering<T>

reverse

public <S extends T> Ordering<S> reverse()

Description copied from class: Ordering

Returns the reverse of this ordering; the Ordering equivalent to Collections.reverseOrder(Comparator).

Java 8 users: Use thisComparator.reversed() instead.

Overrides:

reverse in class Ordering<T>

nullsFirst

public <S extends T> Ordering<S> nullsFirst()

Description copied from class: Ordering

Returns an ordering that treats null as less than all other values and uses this to compare non-null values.

Java 8 users: Use Comparator.nullsFirst(thisComparator) instead.

Overrides:

nullsFirst in class Ordering<T>

nullsLast

public <S extends T> Ordering<S> nullsLast()

Description copied from class: Ordering

Returns an ordering that treats null as greater than all other values and uses this ordering to compare non-null values.

Java 8 users: Use Comparator.nullsLast(thisComparator) instead.

Overrides:

nullsLast in class Ordering<T>

equals

public boolean equals(java.lang.Object object)

Specified by:

equals in interface java.util.Comparator<T>

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object