Package org.tweetyproject.lp.asp.syntax

Class OptimizationElement

java.lang.Object

org.tweetyproject.lp.asp.syntax.ASPElement

org.tweetyproject.lp.asp.syntax.OptimizationElement

All Implemented Interfaces:

Formula, ComplexLogicalFormula, LogicStructure, SimpleLogicalFormula

public class OptimizationElement
extends ASPElement

This class represents an element of an optimization statement, meaning a term-literal tuple that is associated with a weight and optionally a priority (level).

Author:

Anna Gessler

Constructor Summary

Constructors

Constructor	Description
OptimizationElement(Term<?> weight, int priority, java.util.List<Term<?>> terms, java.util.List<ASPBodyElement> literals)	Create a new optimization statement with the given weight, priority, terms and literals.
OptimizationElement(Term<?> weight, java.util.List<Term<?>> terms, java.util.List<ASPBodyElement> literals)	Create a new optimization statement with the given weight, terms and literals.
OptimizationElement(Term<?> weight, Term<?> priority, java.util.List<Term<?>> terms, java.util.List<ASPBodyElement> literals)	Create a new optimization statement with the given weight, priority, terms and literals.
OptimizationElement(Term<?> weight, Term<?> term, ASPBodyElement literal)	Create a new optimization statement with the given single weight, term and literal.

Method Summary

Modifier and Type	Method	Description
ASPElement	clone()	Creates a deep copy of this formula
java.util.Set<ASPAtom>	getAtoms()	Processes the set of all atoms which appear in this formula
Term<?>	getLevel()
java.util.SortedSet<ASPLiteral>	getLiterals()
java.util.List<ASPBodyElement>	getOptLiterals()
java.util.List<Term<?>>	getOptTerms()
java.util.Set<Predicate>	getPredicates()	Processes the set of all predicates which appear in this formula
FolSignature	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.
Term<?>	getWeight()
boolean	isLiteral()
java.lang.String	printToClingo()	Returns a representation of this ASP element in clingo (potassco) syntax.
void	setLevel(int l)	Sets the level (priority) of this optimization statement.
void	setLevel(Term<?> l)	Sets the level (priority) of this optimization statement.
void	setOptLiterals(java.util.List<ASPBodyElement> literals)	Set the literals tuple of this optimization element.
void	setOptTerms(java.util.List<Term<?>> terms)	Set the term tuple of this optimization element.
void	setWeight(Term<?> w)	Sets the weight of this optimization statement.
OptimizationElement	substitute(Term<?> t, Term<?> v)	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 org.tweetyproject.lp.asp.syntax.ASPElement

containsTermsOfType, exchange, getPredicateCls, isGround, isWellFormed, substitute

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.tweetyproject.logics.commons.syntax.interfaces.SimpleLogicalFormula

equals, hashCode

Constructor Detail

OptimizationElement

public OptimizationElement(Term<?> weight,
                           java.util.List<Term<?>> terms,
                           java.util.List<ASPBodyElement> literals)

Create a new optimization statement with the given weight, terms and literals.

Parameters:

weight -

terms -

literals -

OptimizationElement

public OptimizationElement(Term<?> weight,
                           Term<?> term,
                           ASPBodyElement literal)

Create a new optimization statement with the given single weight, term and literal.

Parameters:

weight -

term -

literal -

OptimizationElement

public OptimizationElement(Term<?> weight,
                           int priority,
                           java.util.List<Term<?>> terms,
                           java.util.List<ASPBodyElement> literals)

Create a new optimization statement with the given weight, priority, terms and literals.

Parameters:

weight -

priority - an integer

terms -

literals -

OptimizationElement

public OptimizationElement(Term<?> weight,
                           Term<?> priority,
                           java.util.List<Term<?>> terms,
                           java.util.List<ASPBodyElement> literals)

Create a new optimization statement with the given weight, priority, terms and literals.

Parameters:

weight -

priority -

terms -

literals -

Method Detail

isLiteral

public boolean isLiteral()

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

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 ASPElement

Returns:

all predicates that appear in this formula

substitute

public OptimizationElement substitute(Term<?> t,
                                      Term<?> v)

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 ASPElement

Parameters:

t - the term to be substituted.

v - the term to substitute.

Returns:

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

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 class ASPElement

Returns:

the signature of the language of this formula.

getAtoms

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

Description copied from interface: SimpleLogicalFormula

Processes the set of all atoms which appear in this formula

Specified by:

getAtoms in interface SimpleLogicalFormula

Specified by:

getAtoms in class ASPElement

Returns:

The set of all atoms

clone

public ASPElement 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 ASPElement

Returns:

the cloned formula

setWeight

public void setWeight(Term<?> w)

Sets the weight of this optimization statement.

Parameters:

w - term

setLevel

public void setLevel(Term<?> l)

Sets the level (priority) of this optimization statement.

Parameters:

l - term

setLevel

public void setLevel(int l)

Sets the level (priority) of this optimization statement.

Parameters:

l - integer

setOptTerms

public void setOptTerms(java.util.List<Term<?>> terms)

Set the term tuple of this optimization element.

Parameters:

terms -

setOptLiterals

public void setOptLiterals(java.util.List<ASPBodyElement> literals)

Set the literals tuple of this optimization element.

Parameters:

literals -

getWeight

public Term<?> getWeight()

Returns:

the weight of this optimization element.

getLevel

public Term<?> getLevel()

Returns:

level (priority) of this optimization element.

getOptTerms

public java.util.List<Term<?>> getOptTerms()

Returns:

the term tuple of this optimization element.

getOptLiterals

public java.util.List<ASPBodyElement> getOptLiterals()

Returns:

the literals tuple of this optimization element.

getLiterals

public java.util.SortedSet<ASPLiteral> getLiterals()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

printToClingo

public java.lang.String printToClingo()

Description copied from class: ASPElement

Returns a representation of this ASP element in clingo (potassco) syntax. See https://potassco.org/ for more information.

Overrides:

printToClingo in class ASPElement

Returns:

String representation in clingo syntax