Class IsVar

java.lang.Object

org.projog.core.predicate.AbstractSingleResultPredicate

org.projog.core.predicate.builtin.classify.IsVar

All Implemented Interfaces:

KnowledgeBaseConsumer, PredicateFactory

public final class IsVar
extends AbstractSingleResultPredicate

var(X) - checks that a term is an uninstantiated variable.

var(X) succeeds if X is an uninstantiated variable.

Constructor Summary

Constructors

Constructor	Description
IsVar()

Method Summary

Modifier and Type	Method	Description
protected boolean	evaluate(Term arg)

Methods inherited from class AbstractSingleResultPredicate

evaluate, evaluate, evaluate, evaluate, getArithmeticOperators, getFileHandles, getKnowledgeBase, getOperands, getPredicate, getPredicates, getProjogListeners, getSpyPoints, getTermFormatter, init, isRetryable, setKnowledgeBase

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface PredicateFactory

isAlwaysCutOnBacktrack, preprocess

Constructor Details

IsVar

public IsVar()

Method Details

evaluate

protected boolean evaluate(Term arg)

Overrides:

evaluate in class AbstractSingleResultPredicate