ByFunctionOrdering

java.lang.Object
- com.google.common.collect.Ordering<F>
- - com.google.common.collect.ByFunctionOrdering<F,T>

All Implemented Interfaces:

java.io.Serializable, java.util.Comparator<F>
```
@GwtCompatible(serializable=true)
final class ByFunctionOrdering<F,T>
extends Ordering<F>
implements java.io.Serializable
```
An ordering that orders elements by applying an order to the result of a function on those elements.

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) Function<F,? extends T> function

(package private) Ordering<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

ByFunctionOrdering(Function<F,? extends T> function, Ordering<T> ordering)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`compare(F left, F right)`
`boolean`	`equals(java.lang.Object object)`
`int`	`hashCode()`
`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, nullsFirst, nullsLast, onKeys, onResultOf, reverse, 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

function

final Function<F,? extends T> function

ordering
```
final Ordering<T> ordering
```

serialVersionUID
```
private static final long serialVersionUID
```
See Also:

Constant Field Values

Constructor Detail

ByFunctionOrdering

ByFunctionOrdering(Function<F,? extends T> function,
                   Ordering<T> ordering)

Method Detail
- compare
```
public int compare(F left,
                   F right)
```
  Specified by:
  
  compare in interface java.util.Comparator<F>
  
  Specified by:
  
  compare in class Ordering<F>
- equals
```
public boolean equals(java.lang.Object object)
```
  Specified by:
  
  equals in interface java.util.Comparator<F>
  
  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