com.liferay.adaptive.media

Interface AMDistanceComparator<T>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface AMDistanceComparator<T>

Compares two values, returning a long value representing the distance between them. The meaning of this distance is dependent on the kind of value.

Method Summary

Modifier and Type	Method and Description
long	compare(T value1, T value2) Compare the two values, returning a long value representing how far they are from each other.
default java.util.Comparator<T>	toComparator() Return a comparator that is equivalent to this AMDistanceComparator.

Method Detail

compare

long compare(T value1,
             T value2)

Compare the two values, returning a long value representing how far they are from each other. The meaning of this distance depends on the kind of attribute.

Parameters:

value1 - the first value

value2 - the second value

Returns:

the distance between the two values

toComparator

default java.util.Comparator<T> toComparator()

Return a comparator that is equivalent to this AMDistanceComparator. Implementations of this interface must use saturated arithmetic, guaranteeing the following conditions:

 
 if amDistanceComparator.compare(a, b) < 0 then
 amDistanceComparator.toComparator().compare(a, b) < 0

 if amDistanceComparator.compare(a, b) > 0 then
 amDistanceComparator.toComparator().compare(a, b) > 0

 if amDistanceComparator.compare(a, b) = 0 then
 amDistanceComparator.toComparator().compare(a, b) = 0
 
 

Returns:

a Comparator equivalent to this AMDistanceComparator