heart.alsvfd

Class Null

java.lang.Object

heart.alsvfd.Value

heart.alsvfd.Null

All Implemented Interfaces:

ExpressionBuilderInterface, ExpressionInterface

public class Null
extends Value

The class representing a state of attribute in which we have o information about its values. Only eq and neq operators are allowed for this kind of type.

Field Summary

Fields inherited from class heart.alsvfd.Value

ANY, NULL

Constructor Summary

Constructors

Constructor and Description
Null()

Method Summary

Modifier and Type	Method and Description
Value	add(Value v, Type t) A method that should be used to calculate sum between a value represented by an object that calls the method and a value given as a parameter.
Value	clone()
Value	div(Value v, Type t) A method that should be used to calculate integral between a value represented by an object that calls the method and a value given as a parameter.
boolean	eq(Value v, Type t) A method that should be used to compare two values for equality.
Value	except(Value v, Type t) An abstract method that should be used to calculate set that subtracts the value given as the parameter from the set.
boolean	gt(Value v, Type t) A method that should be used to compare two values.
boolean	gte(Value v, Type t) A method that should be used to compare two values.
int	hashCode()
boolean	in(Value v, Type t) An operator that should be used to check membership of a value of an object that calls the method within a value given by the parameter.
Value	intersect(Value v, Type t) A method that should be used to calculate intersection with the value given as a parameter.
boolean	isInTheDomain(Type t) A method that searches for a value in a domain of Type.
boolean	lt(Value v, Type t) A method that should be used to compare two values.
boolean	lte(Value v, Type t) A method that should be used to compare two values.
Value	mul(Value v, Type t) A method that should be used to calculate multiplication between a value represented by an object that calls the method and a value given as a parameter.
boolean	neq(Value v, Type t) A method that should be used to compare two values for not equality.
boolean	notin(Value v, Type t) An operator that should be used to check membership of a value of an object that calls the method within a value given by the parameter.
boolean	notsim(Value v, Type t) A method that should be used to check if the value has a nonempty intersection with a value given as a parameter.
boolean	sim(Value v, Type t) A method that should be used to check if the value has a nonempty intersection with a value given as a parameter.
Value	sub(Value v, Type t) A method that should be used to calculate difference between a value represented by an object that calls the method and a value given as a parameter.
boolean	subset(Value v, Type t) A method that should be used to check is the value is a subset of value given as a parameter.
boolean	supset(Value v, Type t) A method that should be used to check if the value is a superset of a value given as a parameter.
java.lang.String	toString()
Value	union(Value v, Type t) A method that should be used to calculate a sum of two sets.

Methods inherited from class heart.alsvfd.Value

build, checkDomain, equals, evaluate, evaluateType, factorial, getCertaintyFactor, getTimestamp, mod, pow, powerset, setCertaintyFactor, setTimestamp, staticEvaluate

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Null

public Null()

Method Detail

eq

public boolean eq(Value v,
                  Type t)
           throws java.lang.UnsupportedOperationException,
                  NotInTheDomainException,
                  UnknownValueException

Description copied from class: Value

A method that should be used to compare two values for equality. If one or two of the values equal Value.ANY, function will return true immediately.

Specified by:

eq in class Value

Parameters:

v - - a value to compare

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

true if the values are equal or at least one equals Value.ANY, false otherwise.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

NotInTheDomainException

UnknownValueException

neq

public boolean neq(Value v,
                   Type t)
            throws java.lang.UnsupportedOperationException,
                   NotInTheDomainException,
                   UnknownValueException

Description copied from class: Value

A method that should be used to compare two values for not equality. It is opposite to Value.eq(heart.alsvfd.Value, heart.xtt.Type).

Specified by:

neq in class Value

Parameters:

v - - a value to compare

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

true if values are different, or in case when parameter v equals null, false otherwise.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

NotInTheDomainException

UnknownValueException

gt

public boolean gt(Value v,
                  Type t)
           throws java.lang.UnsupportedOperationException,
                  UnknownValueException

Description copied from class: Value

A method that should be used to compare two values. It checks weather the value represented by an object that calls the method is greater than the value of a parameter. The method should be implemented in simple classes that operates on numbers like SimpleNumeric, but also in simple classes that introduce order in domain, like SimpleSymbolic with ordered domain.

Overrides:

gt in class Value

Parameters:

v - - a value to compare

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

true if the Value v is greater than the value of an object, false otherwise.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

gte

public boolean gte(Value v,
                   Type t)
            throws java.lang.UnsupportedOperationException,
                   UnknownValueException

Description copied from class: Value

A method that should be used to compare two values. It checks weather the value represented by an object that calls the method is greater or equal to the value of a parameter. The method should be implemented in simple classes that operates on numbers like SimpleNumeric, but also in simple classes that introduce order in domain, like SimpleSymbolic with ordered domain.

Overrides:

gte in class Value

Parameters:

v - - a value to compare

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

true if the Value v is greater or equal the value of an object, or in case when one or both of compared values are equal to Value.ANY, false otherwise.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

lt

public boolean lt(Value v,
                  Type t)
           throws java.lang.UnsupportedOperationException,
                  UnknownValueException

Description copied from class: Value

A method that should be used to compare two values. It checks weather the value represented by an object that calls the method is less than the value of a parameter. The method should be implemented in simple classes that operates on numbers like SimpleNumeric, but also in simple classes that introduce order in domain, like SimpleSymbolic with ordered domain.

Overrides:

lt in class Value

Parameters:

v - - a value to compare

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

true if the Value v is less than the value of an object, false otherwise.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

lte

public boolean lte(Value v,
                   Type t)
            throws java.lang.UnsupportedOperationException,
                   UnknownValueException

Description copied from class: Value

A method that should be used to compare two values. It checks weather the value represented by an object that calls the method is less or equal to the value of a parameter. The method should be implemented in simple classes that operates on numbers like SimpleNumeric, but also in simple classes that introduce order in domain, like SimpleSymbolic with ordered domain.

Overrides:

lte in class Value

Parameters:

v - - a value to compare

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

true if the Value v is less than or equal the value of an object, or in case when one or both of compared values are equal to Value.ANY, false otherwise.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

in

public boolean in(Value v,
                  Type t)
           throws java.lang.UnsupportedOperationException,
                  UnknownValueException

Description copied from class: Value

An operator that should be used to check membership of a value of an object that calls the method within a value given by the parameter. The value of the parameter is intended to be a SetValue.

Overrides:

in in class Value

Parameters:

v - - a value to be processed

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

true if the value is a member of the value given as a parameter, false otherwise

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

notin

public boolean notin(Value v,
                     Type t)
              throws java.lang.UnsupportedOperationException,
                     UnknownValueException

Description copied from class: Value

An operator that should be used to check membership of a value of an object that calls the method within a value given by the parameter. This method is opposite to Value.in(heart.alsvfd.Value, heart.xtt.Type). The value of the parameter is intended to be a SetValue.

Overrides:

notin in class Value

Parameters:

v - - a value to be processed

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

false if the value is a member of the value given as a parameter, true otherwise or if a parameter equal {link #ANY}.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

supset

public boolean supset(Value v,
                      Type t)
               throws java.lang.UnsupportedOperationException,
                      UnknownValueException

Description copied from class: Value

A method that should be used to check if the value is a superset of a value given as a parameter.

Overrides:

supset in class Value

Parameters:

v - - a value to be processed. Both values should be a sets, or ranges.

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

true if the value is superset of v, false otherwise

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

subset

public boolean subset(Value v,
                      Type t)
               throws java.lang.UnsupportedOperationException,
                      UnknownValueException

Description copied from class: Value

A method that should be used to check is the value is a subset of value given as a parameter.

Overrides:

subset in class Value

Parameters:

v - - a value to be processed. Both values should be a sets, or ranges.

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

true if the value is subset of v, false otherwise

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

sim

public boolean sim(Value v,
                   Type t)
            throws java.lang.UnsupportedOperationException,
                   UnknownValueException

Description copied from class: Value

A method that should be used to check if the value has a nonempty intersection with a value given as a parameter.

Overrides:

sim in class Value

Parameters:

v - - a value to be processed. Both values should be sets or ranges.

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

true if the value has non-empty intersection with parameter v, false otherwise

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

notsim

public boolean notsim(Value v,
                      Type t)
               throws java.lang.UnsupportedOperationException,
                      UnknownValueException

Description copied from class: Value

A method that should be used to check if the value has a nonempty intersection with a value given as a parameter. This method is opposite to Value.sim(heart.alsvfd.Value, heart.xtt.Type).

Overrides:

notsim in class Value

Parameters:

v - - a value to be processed. Both values should be sets or ranges.

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

false if the value has non-empty intersection with parameter v or if a parameter equal {link #ANY}, true otherwise.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

intersect

public Value intersect(Value v,
                       Type t)
                throws java.lang.UnsupportedOperationException,
                       UnknownValueException

Description copied from class: Value

A method that should be used to calculate intersection with the value given as a parameter.

Overrides:

intersect in class Value

Parameters:

v - - a value to be processed. Both values should be a sets, or ranges.

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

A value that represent intersection between a set represented by an object and the parameter

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

union

public Value union(Value v,
                   Type t)
            throws java.lang.UnsupportedOperationException,
                   UnknownValueException

Description copied from class: Value

A method that should be used to calculate a sum of two sets.

Overrides:

union in class Value

Parameters:

v - - a value to be processed. Both values should be a sets, or ranges.

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

sum of a set represented by an object and the parameter

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

except

public Value except(Value v,
                    Type t)
             throws java.lang.UnsupportedOperationException,
                    UnknownValueException

Description copied from class: Value

An abstract method that should be used to calculate set that subtracts the value given as the parameter from the set.

Overrides:

except in class Value

Parameters:

v - - a value to be processed. It can be both simple type or general type.

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

Resulting set that represents the value of the object without the value represented by parameter v.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

mul

public Value mul(Value v,
                 Type t)
          throws java.lang.UnsupportedOperationException,
                 UnknownValueException

Description copied from class: Value

A method that should be used to calculate multiplication between a value represented by an object that calls the method and a value given as a parameter.

Overrides:

mul in class Value

Parameters:

v - - a value to be processed. It should be a numerical type.

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

multiplication of the value represented by an object that calls the method and a value given as a parameter.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

sub

public Value sub(Value v,
                 Type t)
          throws java.lang.UnsupportedOperationException,
                 UnknownValueException

Description copied from class: Value

A method that should be used to calculate difference between a value represented by an object that calls the method and a value given as a parameter.

Overrides:

sub in class Value

Parameters:

v - - a value to be processed. It should be a numerical type, or ordered symbolic.

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

difference between the value represented by an object that calls the method and the value given as a parameter.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

div

public Value div(Value v,
                 Type t)
          throws java.lang.UnsupportedOperationException,
                 UnknownValueException

Description copied from class: Value

A method that should be used to calculate integral between a value represented by an object that calls the method and a value given as a parameter.

Overrides:

div in class Value

Parameters:

v - - a value to be processed. It should be a numerical type.

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

integral between the value represented by an object that calls the method and the value given as a parameter.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

add

public Value add(Value v,
                 Type t)
          throws java.lang.UnsupportedOperationException,
                 UnknownValueException

Description copied from class: Value

A method that should be used to calculate sum between a value represented by an object that calls the method and a value given as a parameter.

Overrides:

add in class Value

Parameters:

v - - a value to be processed. It should be a numerical type, or ordered symbolic.

t - - a type with respect to witch the operator should work. If null, no domain is taken into consideration while evaluating.

Returns:

sum between the value represented by an object that calls the method and the value given as a parameter.

Throws:

java.lang.UnsupportedOperationException - in cases when operator is not applicable to the values being parameters of the operation.

UnknownValueException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

isInTheDomain

public boolean isInTheDomain(Type t)

Description copied from class: Value

A method that searches for a value in a domain of Type. This is useful if ordered field in SimpleSymbolic value is not known. The method will return the value with its ordered number if exists. If Null calls this method, false is always returned. If Any calls this method true is returned if the domain is not empty.

Specified by:

isInTheDomain in class Value

Returns:

true if the value is in the domain, false otherwise

hashCode

public int hashCode()

Specified by:

hashCode in class Value

clone

public Value clone()

Specified by:

clone in class Value