Class StrictEquality

java.lang.Object

org.projog.core.predicate.AbstractSingleResultPredicate

org.projog.core.predicate.builtin.compare.StrictEquality

All Implemented Interfaces:

KnowledgeBaseConsumer, PredicateFactory

public final class StrictEquality
extends AbstractSingleResultPredicate

X==Y - a strict equality test.

If X can be matched with Y the goal succeeds else the goal fails. A X==Y goal will only consider an uninstantiated variable to be equal to another uninstantiated variable that is already sharing with it.

Constructor Summary

Constructors

Constructor	Description
StrictEquality()

Method Summary

Modifier and Type	Method	Description
protected boolean	evaluate(Term arg1, Term arg2)

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

StrictEquality

public StrictEquality()

Method Details

evaluate

protected boolean evaluate(Term arg1,
 Term arg2)

Overrides:

evaluate in class AbstractSingleResultPredicate