de.alpharogroup.evaluate.object.evaluators

Class ComparableEvaluator

java.lang.Object

de.alpharogroup.evaluate.object.evaluators.ComparableEvaluator

public final class ComparableEvaluator
extends Object

The class ComparableEvaluator is intended to evaluate Comparable objects.

Constructor Summary

Constructors

Constructor and Description
ComparableEvaluator()

Method Summary

Modifier and Type	Method and Description
static <T extends Comparable<T>> boolean	evaluateConsistency(T object, T anotherObject) Evaluate consistency of a comparator.
static <T extends Comparable<T>> boolean	evaluateReversalComparison(T object, T anotherObject) Evaluates the reversal comparison of the given objects.
static <T extends Comparable<T>> boolean	evaluateTransitivity(T a, T b, T c) Evaluate transitivity.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ComparableEvaluator

public ComparableEvaluator()

Method Detail

evaluateConsistency

public static <T extends Comparable<T>> boolean evaluateConsistency(T object,
                                                                    T anotherObject)

Evaluate consistency of a comparator. Consistency is given if and only if object.compareTo(anotherObject) == 0 returns the same boolean value as object.equals(anotherObject).

Note: The given objects should be equal.

Type Parameters:

T - the generic type

Parameters:

object - the object

anotherObject - the another object

Returns:

true, , if consistency is given otherwise false

evaluateReversalComparison

public static <T extends Comparable<T>> boolean evaluateReversalComparison(T object,
                                                                           T anotherObject)

Evaluates the reversal comparison of the given objects.

reversal comparison should be: signum(object.compareTo(anotherObject)) == -signum(anotherObject.compareTo(object))

Type Parameters:

T - the generic type

Parameters:

object - the object

anotherObject - the another object

Returns:

true, if reversal comparison is given otherwise false

evaluateTransitivity

public static <T extends Comparable<T>> boolean evaluateTransitivity(T a,
                                                                     T b,
                                                                     T c)

Evaluate transitivity. Transitivity is given if and only if (0 < b.compareTo(a)) and (0 < c.compareTo(b)), then (0 < c.compareTo(a)).

Type Parameters:

T - the generic type

Parameters:

a - the first object

b - the second object

c - the third object

Returns:

true, if transitivity is given otherwise false