Package org.tweetyproject.arg.aba.syntax

Class Assumption<T extends Formula>

java.lang.Object

org.tweetyproject.arg.aba.syntax.AbaElement<T>

org.tweetyproject.arg.aba.syntax.AbaRule<T>

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

Methods inherited from class org.tweetyproject.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 Details

Assumption

public Assumption(T assumption)

Creates a new assumption

Parameters:

assumption - the assumed formula

Method Details

isFact

public boolean isFact()

Description copied from interface: Rule

isFact

Returns:

whether the rule is a fact

isConstraint

public boolean isConstraint()

Description copied from interface: Rule

isConstraint

Returns:

whether the rule is a constraint

setConclusion

public void setConclusion(T conclusion)

Description copied from interface: Rule

Set the conclusion of this rule.

Parameters:

conclusion - some formula

addPremise

public void addPremise(T premise)

Description copied from interface: Rule

Add the given premise to this rule.

Parameters:

premise - some formula

addPremises

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

Description copied from interface: Rule

Add the given premises to this rule.

Parameters:

premises - some formulas

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 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()

Description copied from class: AbaRule

Return whether this rule is an assumption

Specified by:

isAssumption in class AbaRule<T extends Formula>

Returns:

whether this rule is an assumption

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface SimpleLogicalFormula

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Specified by:

equals in interface SimpleLogicalFormula

Overrides:

equals in class Object

getPredicates

public 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 Set<Term<?>> getTerms()

Returns:

a set containing all terms of this logical structure

getTerms

public <C extends Term<?>> Set<C> getTerms(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 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:

IllegalArgumentException - if "v" and "t" are of different sorts