Cut

java.lang.Object

org.projog.core.predicate.AbstractPredicateFactory

org.projog.core.predicate.builtin.flow.Cut

All Implemented Interfaces:: KnowledgeBaseConsumer, PredicateFactory

public final class Cut extends AbstractPredicateFactory

! - the "cut".

The "cut", represented as a !, is a special mechanism which affects how prolog backtracks.

Nested Class Summary

Nested Classes

Modifier and Type

Class

Description

private static final class

Cut.CutPredicate
Constructor Summary

Constructors

Constructor

Description

Cut()
Method Summary

Modifier and Type

Method

Description

protected Predicate

getPredicate()

boolean

isAlwaysCutOnBacktrack()

Will attempting to re-evaluate this implementation always result in a cut?

Methods inherited from class AbstractPredicateFactory
getArithmeticOperators, getFileHandles, getKnowledgeBase, getOperands, getPredicate, getPredicate, getPredicate, getPredicate, getPredicate, getPredicates, getProjogListeners, getSpyPoints, getTermFormatter, init, isRetryable, setKnowledgeBase

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- Cut
  
  public Cut()
Method Details
- getPredicate
  
  protected Predicate getPredicate()
  
  Overrides:
  
  getPredicate in class AbstractPredicateFactory
- isAlwaysCutOnBacktrack
  
  public boolean isAlwaysCutOnBacktrack()
  
  Description copied from interface: PredicateFactory
  
  Will attempting to re-evaluate this implementation always result in a cut?
  
  Returns:
  
  true if a cut will always be encountered when attempting to re-evaluate, false otherwise