Package net.sf.tweety.lp.nlp.syntax

Class NLPRule

java.lang.Object

net.sf.tweety.logics.commons.syntax.ComplexLogicalFormulaAdapter

net.sf.tweety.lp.nlp.syntax.NLPRule

All Implemented Interfaces:

Formula, Rule<FolFormula,FolFormula>, ComplexLogicalFormula, LogicStructure, SimpleLogicalFormula

public class NLPRule
extends ComplexLogicalFormulaAdapter
implements ComplexLogicalFormula, Rule<FolFormula,FolFormula>

A rule of a nested logic program. A nested logic program contains not quantified first order formulas.

Author:

Tim Janus

Constructor Summary

Constructors

Constructor	Description
NLPRule()
NLPRule(FolFormula conclusion)
NLPRule(FolFormula conclusion, java.util.Collection<FolFormula> premise)
NLPRule(FolFormula conclusion, FolFormula premise)
NLPRule(NLPRule other)

Method Summary

Modifier and Type	Method	Description
void	addPremise(FolFormula premise)
void	addPremises(java.util.Collection<? extends FolFormula> premises)
NLPRule	clone()	Creates a deep copy of this formula
boolean	equals(java.lang.Object other)
java.util.Set<FolAtom>	getAtoms()	Processes the set of all atoms which appear in this formula
FolFormula	getConclusion()	Returns the conclusion of this rule.
java.lang.Class<? extends Predicate>	getPredicateCls()
java.util.Set<Predicate>	getPredicates()	Processes the set of all predicates which appear in this formula
java.util.Collection<FolFormula>	getPremise()	Returns the premise of this rule.
FolSignature	getSignature()	Returns the signature of the language of this formula.
java.util.Set<Term<?>>	getTerms()
int	hashCode()
boolean	isConstraint()
boolean	isFact()
void	setConclusion(FolFormula conclusion)
NLPRule	substitute(Term<?> v, Term<?> t)	Substitutes all occurrences of term "v" in this formula by term "t" and returns the new formula.

Methods inherited from class net.sf.tweety.logics.commons.syntax.ComplexLogicalFormulaAdapter

containsTermsOfType, exchange, getTerms, isGround, isLiteral, isWellFormed, substitute

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface net.sf.tweety.logics.commons.syntax.interfaces.ComplexLogicalFormula

exchange, isGround, isWellFormed, substitute

Methods inherited from interface net.sf.tweety.logics.commons.syntax.interfaces.LogicStructure

containsTermsOfType, getTerms

Methods inherited from interface net.sf.tweety.logics.commons.syntax.interfaces.SimpleLogicalFormula

isLiteral

Constructor Detail

NLPRule

public NLPRule()

NLPRule

public NLPRule(NLPRule other)

NLPRule

public NLPRule(FolFormula conclusion)

NLPRule

public NLPRule(FolFormula conclusion,
               FolFormula premise)

NLPRule

public NLPRule(FolFormula conclusion,
               java.util.Collection<FolFormula> premise)

Method Detail

addPremise

public void addPremise(FolFormula premise)
                throws LanguageException

Specified by:

addPremise in interface Rule<FolFormula,FolFormula>

Throws:

LanguageException

addPremises

public void addPremises(java.util.Collection<? extends FolFormula> premises)

Specified by:

addPremises in interface Rule<FolFormula,FolFormula>

setConclusion

public void setConclusion(FolFormula conclusion)
                   throws LanguageException

Specified by:

setConclusion in interface Rule<FolFormula,FolFormula>

Throws:

LanguageException

getPremise

public java.util.Collection<FolFormula> getPremise()

Description copied from interface: Rule

Returns the premise of this rule.

Specified by:

getPremise in interface Rule<FolFormula,FolFormula>

Returns:

the premise of this rule.

getConclusion

public FolFormula getConclusion()

Description copied from interface: Rule

Returns the conclusion of this rule.

Specified by:

getConclusion in interface Rule<FolFormula,FolFormula>

Returns:

the conclusion of this rule.

getSignature

public FolSignature 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 interface Rule<FolFormula,FolFormula>

Returns:

the signature of the language of this formula.

isFact

public boolean isFact()

Specified by:

isFact in interface Rule<FolFormula,FolFormula>

isConstraint

public boolean isConstraint()

Specified by:

isConstraint in interface Rule<FolFormula,FolFormula>

getAtoms

public java.util.Set<FolAtom> getAtoms()

Description copied from interface: SimpleLogicalFormula

Processes the set of all atoms which appear in this formula

Specified by:

getAtoms in interface SimpleLogicalFormula

Returns:

The set of all atoms

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

Returns:

all predicates that appear in this formula

getPredicateCls

public java.lang.Class<? extends Predicate> getPredicateCls()

Specified by:

getPredicateCls in interface SimpleLogicalFormula

Returns:

The class description of the predicate used by this formula.

getTerms

public java.util.Set<Term<?>> getTerms()

Specified by:

getTerms in interface LogicStructure

Returns:

a set containing all terms of this logical structure

substitute

public NLPRule substitute(Term<?> v,
                          Term<?> t)
                   throws java.lang.IllegalArgumentException

Description copied from interface: ComplexLogicalFormula

Substitutes all occurrences of term "v" in this formula by term "t" and returns the new formula.

Specified by:

substitute in interface ComplexLogicalFormula

Parameters:

v - the term to be substituted.

t - the term to substitute.

Returns:

a formula where every occurrence of "v" is replaced by "t".

Throws:

java.lang.IllegalArgumentException - if "v" and "t" are of different sorts

hashCode

public int hashCode()

Specified by:

hashCode in interface SimpleLogicalFormula

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object other)

Specified by:

equals in interface SimpleLogicalFormula

Overrides:

equals in class java.lang.Object

clone

public NLPRule clone()

Description copied from interface: SimpleLogicalFormula

Creates a deep copy of this formula

Specified by:

clone in interface ComplexLogicalFormula

Specified by:

clone in interface SimpleLogicalFormula

Specified by:

clone in class ComplexLogicalFormulaAdapter

Returns:

the cloned formula