Package net.sf.tweety.logics.dl.syntax

Class AtomicRole

java.lang.Object

net.sf.tweety.logics.dl.syntax.ComplexConcept

net.sf.tweety.logics.dl.syntax.AtomicRole

All Implemented Interfaces:

Formula, ClassicalFormula, Conjunctable, Disjunctable, Invertable, ProbabilityAware, SimpleLogicalFormula

public class AtomicRole
extends ComplexConcept

This class models a role in description logics.
Note: Role assertions like (a,b):r ("the Individuals a,b are in the extension of the role r") are modeled with a different class: ConceptAssertion.

Author:

Anna Gessler

Field Summary

Fields

Modifier and Type	Field	Description
private Predicate	predicate	The predicate that represents this atomic role.

Constructor Summary

Constructors

Constructor	Description
AtomicRole(java.lang.String name)	Initializes a role with the given name.
AtomicRole(Predicate p)

Method Summary

Modifier and Type	Method	Description
ComplexConcept	clone()	Creates a deep copy of this formula
AtomicRole	collapseAssociativeFormulas()	This method collapses all associative operations appearing in this term, e.g.
boolean	equals(java.lang.Object obj)
java.lang.String	getName()
Predicate	getPredicate()
java.util.Set<Predicate>	getPredicates()	Processes the set of all predicates which appear in this formula
DlSignature	getSignature()	Returns the signature of the language of this formula.
int	hashCode()
boolean	isLiteral()
java.lang.String	toString()

Methods inherited from class net.sf.tweety.logics.dl.syntax.ComplexConcept

combineWithAnd, combineWithOr, complement, getAtoms, getPredicateCls, getUniformProbability

Methods inherited from class java.lang.Object

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

Field Detail

predicate

private Predicate predicate

The predicate that represents this atomic role.

Constructor Detail

AtomicRole

public AtomicRole(java.lang.String name)

Initializes a role with the given name.

Parameters:

name - the name of the role

AtomicRole

public AtomicRole(Predicate p)

Method Detail

getPredicate

public Predicate getPredicate()

getName

public java.lang.String getName()

getPredicates

public java.util.Set<Predicate> getPredicates()

Description copied from interface: SimpleLogicalFormula

Processes the set of all predicates which appear in this formula

Specified by:

getPredicates in interface SimpleLogicalFormula

Specified by:

getPredicates in class ComplexConcept

Returns:

all predicates that appear in this formula

clone

public ComplexConcept clone()

Description copied from class: ComplexConcept

Creates a deep copy of this formula

Specified by:

clone in interface SimpleLogicalFormula

Specified by:

clone in class ComplexConcept

Returns:

the cloned formula

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

collapseAssociativeFormulas

public AtomicRole collapseAssociativeFormulas()

Description copied from class: ComplexConcept

This method collapses all associative operations appearing in this term, e.g. every a||(b||c) becomes a||b||c.

Specified by:

collapseAssociativeFormulas in class ComplexConcept

Returns:

the collapsed formula.

isLiteral

public boolean isLiteral()

Returns:

true if the formula represents a literal in the language or false otherwise

getSignature

public DlSignature getSignature()

Description copied from interface: Formula

Returns the signature of the language of this formula.

Specified by:

getSignature in interface Formula

Specified by:

getSignature in class ComplexConcept

Returns:

the signature of the language of this formula.

hashCode

public int hashCode()

Specified by:

hashCode in interface SimpleLogicalFormula

Specified by:

hashCode in class ComplexConcept

equals

public boolean equals(java.lang.Object obj)

Specified by:

equals in interface SimpleLogicalFormula

Specified by:

equals in class ComplexConcept