Class Compare

java.lang.Object

org.projog.core.predicate.AbstractSingleResultPredicate

org.projog.core.predicate.builtin.compare.Compare

All Implemented Interfaces:

KnowledgeBaseConsumer, PredicateFactory

public final class Compare
extends AbstractSingleResultPredicate

compare(X,Y,Z) - compares arguments.

Compares the second and third arguments.

• If second is greater than third then attempts to unify first argument with >
• If second is less than third then attempts to unify first argument with <
• If second is equal to third then attempts to unify first argument with =

Constructor Summary

Constructors

Constructor	Description
Compare()

Method Summary

Modifier and Type	Method	Description
protected boolean	evaluate(Term result, Term t1, Term t2)

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

Compare

public Compare()

Method Details

evaluate

protected boolean evaluate(Term result,
 Term t1,
 Term t2)

Overrides:

evaluate in class AbstractSingleResultPredicate