org.projog.core.predicate.builtin.list

Class Delete

java.lang.Object

org.projog.core.predicate.AbstractSingleResultPredicate

org.projog.core.predicate.builtin.list.Delete

All Implemented Interfaces:

KnowledgeBaseConsumer, PredicateFactory

public final class Delete
extends AbstractSingleResultPredicate

delete(X,Y,Z) - remove all occurrences of a term from a list.

Removes all occurrences of the term Y in the list represented by X and attempts to unify the result with Z. Strict term equality is used to identify occurrences.

Constructor Summary

Constructors

Constructor and Description
Delete()

Method Summary

Modifier and Type	Method and Description
protected boolean	evaluate(Term input, Term element, Term output)

Methods inherited from class org.projog.core.predicate.AbstractSingleResultPredicate

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.projog.core.predicate.PredicateFactory

isAlwaysCutOnBacktrack

Constructor Detail

Delete

public Delete()

Method Detail

evaluate

protected boolean evaluate(Term input,
                           Term element,
                           Term output)

Overrides:

evaluate in class AbstractSingleResultPredicate