ASPLiteral

java.lang.Object
- net.sf.tweety.lp.asp.syntax.ASPElement
- - net.sf.tweety.lp.asp.syntax.ASPBodyElement
  - - net.sf.tweety.lp.asp.syntax.ASPLiteral

All Implemented Interfaces:

java.lang.Comparable<ASPLiteral>, Formula, Atom, ComplexLogicalFormula, Invertable, LogicStructure, SimpleLogicalFormula

Direct Known Subclasses:

ASPAtom, StrictNegation
```
public abstract class ASPLiteral
extends ASPBodyElement
implements Atom, Invertable, java.lang.Comparable<ASPLiteral>
```
This interface defines common functionality for literals, meaning atoms or strictly negated atoms. In the ASP-Core-2 standard, the formulas represented by this class are also referred to as 'classical atoms'.

Author:

Anna Gessler, Tim Janus

Nested Class Summary
- Nested classes/interfaces inherited from interface net.sf.tweety.logics.commons.syntax.interfaces.Atom
  Atom.AtomImpl, Atom.RETURN_SET_PREDICATE

Constructor Summary

Constructors
Constructor Description

ASPLiteral()

Method Summary

Modifier and Type	Method	Description
`abstract ASPLiteral`	`cloneWithAddedTerm(Term<?> term)`	Creates a copy of the literal and adds the given term as argument to the end of the argument list.
`abstract ASPLiteral`	`complement()`
`abstract ASPAtom`	`getAtom()`
`boolean`	`isLiteral()`

Methods inherited from class net.sf.tweety.lp.asp.syntax.ASPBodyElement
getLiterals, substitute

Methods inherited from class net.sf.tweety.lp.asp.syntax.ASPElement
clone, containsTermsOfType, exchange, getAtoms, getPredicateCls, getPredicates, getSignature, isGround, isWellFormed, substitute

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface net.sf.tweety.logics.commons.syntax.interfaces.Atom
addArgument, getArguments, getName, getPredicate, isComplete, setPredicate

Methods inherited from interface java.lang.Comparable
compareTo

Methods inherited from interface net.sf.tweety.commons.Formula
getSignature

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

Methods inherited from interface net.sf.tweety.logics.commons.syntax.interfaces.SimpleLogicalFormula
equals, getAtoms, getPredicateCls, getPredicates, hashCode

- Constructor Detail
  - ASPLiteral
```
public ASPLiteral()
```
- Method Detail
  - cloneWithAddedTerm
```
public abstract ASPLiteral cloneWithAddedTerm(Term<?> term)
```
    Creates a copy of the literal and adds the given term as argument to the end of the argument list.
    
    Parameters:
    
    term - the new argument.
    
    Returns:
    
    A copy of the literal containing the given term as new argument.
  - getAtom
```
public abstract ASPAtom getAtom()
```
    Returns:
    
    The atom representing the literal.
  - isLiteral
```
public boolean isLiteral()
```
    Specified by:
    
    isLiteral in interface SimpleLogicalFormula
    
    Returns:
    
    true if the formula represents a literal in the language or false otherwise
  - complement
```
public abstract ASPLiteral complement()
```
    Specified by:
    
    complement in interface Invertable
    
    Returns:
    
    the complement of this formula.