Package com.google.common.collect
Class NaturalOrdering
- java.lang.Object
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- com.google.common.collect.Ordering<java.lang.Comparable<?>>
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- com.google.common.collect.NaturalOrdering
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- All Implemented Interfaces:
java.io.Serializable
,java.util.Comparator<java.lang.Comparable<?>>
final class NaturalOrdering extends Ordering<java.lang.Comparable<?>> implements java.io.Serializable
An ordering that uses the natural order of the values.
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Nested Class Summary
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Nested classes/interfaces inherited from class com.google.common.collect.Ordering
Ordering.ArbitraryOrdering, Ordering.IncomparableValueException
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Field Summary
Fields Modifier and Type Field Description (package private) static NaturalOrdering
INSTANCE
private Ordering<java.lang.Comparable<?>>
nullsFirst
private Ordering<java.lang.Comparable<?>>
nullsLast
private static long
serialVersionUID
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Fields inherited from class com.google.common.collect.Ordering
LEFT_IS_GREATER, RIGHT_IS_GREATER
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Constructor Summary
Constructors Modifier Constructor Description private
NaturalOrdering()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
compare(java.lang.Comparable<?> left, java.lang.Comparable<?> right)
<S extends java.lang.Comparable<?>>
Ordering<S>nullsFirst()
Returns an ordering that treatsnull
as less than all other values and usesthis
to compare non-null values.<S extends java.lang.Comparable<?>>
Ordering<S>nullsLast()
Returns an ordering that treatsnull
as greater than all other values and uses this ordering to compare non-null values.private java.lang.Object
readResolve()
<S extends java.lang.Comparable<?>>
Ordering<S>reverse()
Returns the reverse of this ordering; theOrdering
equivalent toCollections.reverseOrder(Comparator)
.java.lang.String
toString()
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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
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Field Detail
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INSTANCE
static final NaturalOrdering INSTANCE
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nullsFirst
@CheckForNull private transient Ordering<java.lang.Comparable<?>> nullsFirst
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nullsLast
@CheckForNull private transient Ordering<java.lang.Comparable<?>> nullsLast
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serialVersionUID
private static final long serialVersionUID
- See Also:
- Constant Field Values
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Method Detail
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compare
public int compare(java.lang.Comparable<?> left, java.lang.Comparable<?> right)
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nullsFirst
public <S extends java.lang.Comparable<?>> Ordering<S> nullsFirst()
Description copied from class:Ordering
Returns an ordering that treatsnull
as less than all other values and usesthis
to compare non-null values.Java 8 users: Use
Comparator.nullsFirst(thisComparator)
instead.- Overrides:
nullsFirst
in classOrdering<java.lang.Comparable<?>>
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nullsLast
public <S extends java.lang.Comparable<?>> Ordering<S> nullsLast()
Description copied from class:Ordering
Returns an ordering that treatsnull
as greater than all other values and uses this ordering to compare non-null values.Java 8 users: Use
Comparator.nullsLast(thisComparator)
instead.
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reverse
public <S extends java.lang.Comparable<?>> Ordering<S> reverse()
Description copied from class:Ordering
Returns the reverse of this ordering; theOrdering
equivalent toCollections.reverseOrder(Comparator)
.Java 8 users: Use
thisComparator.reversed()
instead.
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readResolve
private java.lang.Object readResolve()
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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