org.apache.jena.reasoner.rulesys.impl

Class TripleMatchFrame

java.lang.Object

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

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

org.apache.jena.reasoner.rulesys.impl.GenericTripleMatchFrame

org.apache.jena.reasoner.rulesys.impl.TripleMatchFrame

public class TripleMatchFrame
extends GenericTripleMatchFrame

Frame on the choice point stack used to represent the state of a direct graph triple match.

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 and Description
TripleMatchFrame(LPInterpreter interpreter) Constructor.

Method Summary

Modifier and Type	Method and Description
void	close() Override close method to reclaim the iterator.
void	init(LPInterpreter interpreter) Initialize the triple match to preserve the current context of the given LPInterpreter and search for the match defined by the current argument registers
boolean	nextMatch(LPInterpreter interpreter) Find the next result triple and bind the result vars appropriately.

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

bindResult, functorMatch

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

setContinuation

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

fastLinkTo, getLink, linkTo

Methods inherited from class java.lang.Object

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

Constructor Detail

TripleMatchFrame

public TripleMatchFrame(LPInterpreter interpreter)

Constructor. Initialize the triple match to preserve the current context of the given LPInterpreter and search for the match defined by the current argument registers

Parameters:

interpreter - the interpreter instance whose env, trail and arg values are to be preserved

Method Detail

nextMatch

public boolean nextMatch(LPInterpreter interpreter)

Find the next result triple and bind the result vars appropriately.

Parameters:

interpreter - the calling interpreter whose trail should be used

Returns:

false if there are no more matches in the iterator.

init

public void init(LPInterpreter interpreter)

Initialize the triple match to preserve the current context of the given LPInterpreter and search for the match defined by the current argument registers

Overrides:

init in class GenericTripleMatchFrame

Parameters:

interpreter - the interpreter instance whose env, trail and arg values are to be preserved

close

public void close()

Override close method to reclaim the iterator.

Overrides:

close in class FrameObject