Package net.sf.tweety.arg.aba.syntax

Class Assumption<T extends Formula>

java.lang.Object

net.sf.tweety.arg.aba.syntax.AbaElement<T>

net.sf.tweety.arg.aba.syntax.AbaRule<T>

net.sf.tweety.arg.aba.syntax.Assumption<T>

Type Parameters:

T - is the type of the language that the ABA theory's rules range over

All Implemented Interfaces:

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

public class Assumption<T extends Formula>
extends AbaRule<T>

This class models an assumption of an ABA theory.

Author:

Nils Geilen (geilenn@uni-koblenz.de)

Constructor Summary

Constructors

Constructor	Description
Assumption(T assumption)	Creates a new assumption

Method Summary

Modifier and Type	Method	Description
void	addPremise(T premise)
void	addPremises(java.util.Collection<? extends T> premises)
AbaElement<T>	clone()	Creates a deep copy of this formula
boolean	equals(java.lang.Object obj)
T	getConclusion()	Returns the conclusion of this rule.
T	getFormula()	Returns the inner formula of this assumption.
java.util.Set<? extends Predicate>	getPredicates()	Processes the set of all predicates which appear in this formula
java.util.Collection<? extends T>	getPremise()	Returns the premise of this rule.
Signature	getSignature()	Returns the signature of the language of this formula.
java.util.Set<Term<?>>	getTerms()
<C extends Term<?>> java.util.Set<C>	getTerms(java.lang.Class<C> cls)	Processes the set containing all terms of type C.
int	hashCode()
boolean	isAssumption()
boolean	isConstraint()
boolean	isFact()
boolean	isLiteral()
void	setConclusion(T conclusion)
Assumption<T>	substitute(Term<?> v, Term<?> t)	Substitutes all occurrences of term "v" in this formula by term "t" and returns the new formula.
java.lang.String	toString()

Methods inherited from class net.sf.tweety.arg.aba.syntax.AbaElement

allGroundInstances, allSubstitutions, containsTermsOfType, exchange, getAtoms, getPredicateCls, getUnboundVariables, isGround, isWellFormed, substitute

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Assumption

public Assumption(T assumption)

Creates a new assumption

Parameters:

assumption - the assumed formula

Method Detail

isFact

public boolean isFact()

isConstraint

public boolean isConstraint()

setConclusion

public void setConclusion(T conclusion)

addPremise

public void addPremise(T premise)

addPremises

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

getSignature

public Signature getSignature()

Description copied from interface: Formula

Returns the signature of the language of this formula.

Returns:

the signature of the language of this formula.

getPremise

public java.util.Collection<? extends T> getPremise()

Description copied from interface: Rule

Returns the premise of this rule.

Returns:

the premise of this rule.

getConclusion

public T getConclusion()

Description copied from interface: Rule

Returns the conclusion of this rule.

Returns:

the conclusion of this rule.

getFormula

public T getFormula()

Returns the inner formula of this assumption.

Returns:

the inner formula of this assumption.

isAssumption

public boolean isAssumption()

Specified by:

isAssumption in class AbaRule<T extends Formula>

Returns:

whether this rule is an assumption

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

hashCode

public int hashCode()

Specified by:

hashCode in interface SimpleLogicalFormula

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Specified by:

equals in interface SimpleLogicalFormula

Overrides:

equals in class java.lang.Object

getPredicates

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

Description copied from interface: SimpleLogicalFormula

Processes the set of all predicates which appear in this formula

Returns:

all predicates that appear in this formula

isLiteral

public boolean isLiteral()

Specified by:

isLiteral in interface SimpleLogicalFormula

Overrides:

isLiteral in class AbaElement<T extends Formula>

Returns:

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

getTerms

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

Returns:

a set containing all terms of this logical structure

getTerms

public <C extends Term<?>> java.util.Set<C> getTerms(java.lang.Class<C> cls)

Description copied from interface: LogicStructure

Processes the set containing all terms of type C. This method uses the equals method of the given Class and therefore does not add terms which are sub classes of type C to the set.

Type Parameters:

C - the type of terms

Parameters:

cls - The Class structure containing type information about the searched term

Returns:

A set containing all terms of type C of this logical structure

clone

public AbaElement<T> 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 AbaElement<T extends Formula>

Returns:

the cloned formula

substitute

public Assumption<T> 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

Specified by:

substitute in class AbaElement<T extends Formula>

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