fuzzydl

Class Degree

java.lang.Object

fuzzydl.Degree

Direct Known Subclasses:

DegreeExpression, DegreeNumeric, DegreeVariable

public abstract class Degree
extends java.lang.Object

Degree.

Author:

Fernando Bobillo

Field Summary

Fields

Modifier and Type	Field and Description
static Degree	ONE

Constructor Summary

Constructors

Constructor and Description
Degree()

Method Summary

Modifier and Type	Method and Description
abstract Expression	addToExpression(Expression expr) Adds the degree to an expression.
abstract Inequation	createInequalityWithDegreeRHS(Expression expr, char inequationType) Gets an inequality of the form (expression, type, degree).
abstract boolean	equals(Degree d) Checks if two degrees are equal.
static Degree	getDegree(java.lang.Double numeric) Constructor for a numeric degree.
static Degree	getDegree(Expression expr) Constructor for an expression degree.
static Degree	getDegree(Variable variable) Constructor for a variable degree.
abstract boolean	isNumeric() Checks if the object is a numeric degree.
abstract Expression	multiplyConstant(java.lang.Double constant) Multiplies the degree and a real number.
abstract Expression	subtractFromExpression(Expression expr) Subtracts the degree to an expression.
abstract java.lang.String	toString() Gets the name of the degree.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

ONE

public static final Degree ONE

Constructor Detail

Degree

public Degree()

Method Detail

getDegree

public static Degree getDegree(java.lang.Double numeric)

Constructor for a numeric degree.

Parameters:

numeric - A double number in [0,1].

Returns:

A numeric degree.

getDegree

public static Degree getDegree(Variable variable)

Constructor for a variable degree.

Parameters:

variable - A variable.

Returns:

A variable degree.

getDegree

public static Degree getDegree(Expression expr)

Constructor for an expression degree.

Parameters:

expr - An expression.

Returns:

A expression degree.

isNumeric

public abstract boolean isNumeric()

Checks if the object is a numeric degree.

Returns:

true if the object is a numeric degree; false otherwise.

createInequalityWithDegreeRHS

public abstract Inequation createInequalityWithDegreeRHS(Expression expr,
                                                         char inequationType)

Gets an inequality of the form (expression, type, degree).

Parameters:

expr - An expression.

inequationType - A type of inequality.

Returns:

An inequality of the form (expression, type, degree).

addToExpression

public abstract Expression addToExpression(Expression expr)

Adds the degree to an expression.

Parameters:

expr - An expression.

Returns:

A new expression with the sum.

subtractFromExpression

public abstract Expression subtractFromExpression(Expression expr)

Subtracts the degree to an expression.

Parameters:

expr - An expression.

Returns:

A new expression with the subtraction expr - this.

multiplyConstant

public abstract Expression multiplyConstant(java.lang.Double constant)

Multiplies the degree and a real number.

Parameters:

constant - A real number.

Returns:

A new expression with the product.

toString

public abstract java.lang.String toString()

Gets the name of the degree.

Overrides:

toString in class java.lang.Object

Returns:

Name of the degree.

equals

public abstract boolean equals(Degree d)

Checks if two degrees are equal.

Parameters:

d - A degree.

Returns:

true if the degrees are equal; false otherwise.