Module org.apache.jena.core

Package org.apache.jena.reasoner.rulesys.impl

Class GenericChoiceFrame

java.lang.Object

org.apache.jena.reasoner.rulesys.impl.FrameObject

org.apache.jena.reasoner.rulesys.impl.GenericChoiceFrame

Direct Known Subclasses:

ChoicePointFrame, GenericTripleMatchFrame, TopLevelTripleMatchFrame

public class GenericChoiceFrame
extends FrameObject

Core properties of choice frames used use to represent the OR state of the backtracking search. Specific variants of this need to preserve additional choice state.

This is used in the inner loop of the interpreter and so is a pure data structure not an abstract data type and assumes privileged access to the interpreter state.

Constructor Summary

Constructors

Constructor	Description
GenericChoiceFrame()

Method Summary

Modifier and Type	Method	Description
void	init(LPInterpreter interpreter)	Initialize a choice point to preserve the current context of the given intepreter and then call the given set of predicates.
void	setContinuation(int pc, int ac)	Set the continuation point for this frame.

Methods inherited from class org.apache.jena.reasoner.rulesys.impl.FrameObject

close, fastLinkTo, getLink, linkTo

Methods inherited from class java.lang.Object

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

Constructor Details

GenericChoiceFrame

public GenericChoiceFrame()

Method Details

init

public void init(LPInterpreter interpreter)

Initialize a choice point to preserve the current context of the given intepreter and then call the given set of predicates.

Parameters:

interpreter - the LPInterpreter whose state is to be preserved

setContinuation

public void setContinuation(int pc,
 int ac)

Set the continuation point for this frame.