Package jason.asSyntax

Class RelExpr

java.lang.Object

jason.asSyntax.DefaultTerm

jason.asSyntax.Literal

jason.asSyntax.Atom

jason.asSyntax.Structure

jason.asSyntax.BinaryStructure

jason.asSyntax.RelExpr

All Implemented Interfaces:

LogicalFormula, Term, ToDOM, ToJson, Serializable, Cloneable, Comparable<Term>

public class RelExpr
extends BinaryStructure
implements LogicalFormula

Represents a relational expression like 10 > 20. When the operator is =.., the first argument is a literal and the second as list, e.g.: Literal =.. [functor, list of terms, list of annots] Examples:

• X =.. [~p, [t1, t2], [a1,a2]]
  X is ~p(t1,t2)[a1,a2]
• ~p(t1,t2)[a1,a2] =.. X
  X is [~p, [t1, t2], [a1,a2]]

in case the list has fourth terms, the first term is the namespace.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	RelExpr.RelationalOp

Field Summary

Fields inherited from class jason.asSyntax.Structure

emptyTermArray, emptyTermList

Fields inherited from class jason.asSyntax.Literal

DefaultNS, LFalse, LNeg, LPos, LTrue, predicateIndicatorCache

Fields inherited from class jason.asSyntax.DefaultTerm

hashCodeCache, srcInfo

Constructor Summary

Constructors

Constructor	Description
RelExpr(Term t1, RelExpr.RelationalOp oper, Term t2)

Method Summary

Modifier and Type	Method	Description
Term	capply(Unifier u)	clone and applies together (and faster than clone and then apply)
LogicalFormula	clone()	make a hard copy of the terms
Literal	cloneNS(Atom newnamespace)	clone in another namespace
Element	getAsDOM(Document document)	get as XML
RelExpr.RelationalOp	getOp()	gets the Operation of this Expression
Iterator<Unifier>	logicalConsequence(Agent ag, Unifier un)	logicalConsequence checks whether one particular predicate is a logical consequence of the belief base.
static LogicalFormula	parseExpr(String sExpr)	returns some LogicalFormula that can be evaluated

Methods inherited from class jason.asSyntax.BinaryStructure

getLHS, getRHS, toString

Methods inherited from class jason.asSyntax.Structure

addTerm, addTerms, addTerms, calcHashCode, countVars, delTerm, equals, getArity, getSingletonVars, getTerm, getTerms, getTermsSize, hasTerm, hasVar, isAtom, isGround, isStructure, isUnary, makeTermsAnnon, makeVarsAnnon, makeVarsAnnon, parse, setTerm, setTerms, subsumes, varToReplace

Methods inherited from class jason.asSyntax.Atom

compareTo, getFunctor, getNS

Methods inherited from class jason.asSyntax.Literal

addAnnot, addAnnots, addAnnots, addSource, addSourceInfoAsAnnots, canBeAddedInBB, clearAnnots, copy, delAnnot, delAnnots, delAnnots, delSource, delSources, equalsAsStructure, forceFullLiteralImpl, getAnnot, getAnnots, getAnnots, getAsJson, getAsListOfTerms, getPredicateIndicator, getSources, getTermsArray, hasAnnot, hasAnnot, hasSource, hasSource, hasSubsetAnnot, hasSubsetAnnot, importAnnots, isLiteral, negated, newFromListOfTerms, newFunctor, noSource, parseLiteral, setAnnots, setNegated, subjectToBUF

Methods inherited from class jason.asSyntax.DefaultTerm

getCyclicVar, getErrorMsg, getSrcInfo, hashCode, isArithExpr, isCyclicTerm, isInternalAction, isList, isMap, isNumeric, isPlanBody, isPred, isRule, isSet, isString, isUnnamedVar, isVar, resetHashCodeCache, setSrcInfo

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface jason.asSyntax.Term

countVars, equals, getCyclicVar, getSrcInfo, hasVar, isArithExpr, isAtom, isCyclicTerm, isGround, isInternalAction, isList, isLiteral, isMap, isNumeric, isPlanBody, isPred, isRule, isSet, isString, isStructure, isUnnamedVar, isVar, setSrcInfo, subsumes

Methods inherited from interface jason.util.ToJson

getAsJson, getAsJsonStr

Constructor Details

RelExpr

public RelExpr(Term t1,
 RelExpr.RelationalOp oper,
 Term t2)

Method Details

logicalConsequence

public Iterator<Unifier> logicalConsequence(Agent ag,
 Unifier un)

Description copied from class: Literal

logicalConsequence checks whether one particular predicate is a logical consequence of the belief base. Returns an iterator for all unifiers that are logCons.

Specified by:

logicalConsequence in interface LogicalFormula

Overrides:

logicalConsequence in class Literal

parseExpr

public static LogicalFormula parseExpr(String sExpr)

returns some LogicalFormula that can be evaluated

capply

public Term capply(Unifier u)

Description copied from interface: Term

clone and applies together (and faster than clone and then apply)

Specified by:

capply in interface Term

Overrides:

capply in class Structure

clone

public LogicalFormula clone()

make a hard copy of the terms

Specified by:

clone in interface Term

Overrides:

clone in class Structure

cloneNS

public Literal cloneNS(Atom newnamespace)

Description copied from interface: Term

clone in another namespace

Specified by:

cloneNS in interface Term

Overrides:

cloneNS in class Structure

getOp

public RelExpr.RelationalOp getOp()

gets the Operation of this Expression

getAsDOM

public Element getAsDOM(Document document)

get as XML

Specified by:

getAsDOM in interface ToDOM

Overrides:

getAsDOM in class BinaryStructure