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com.hp.hpl.jena.reasoner.rulesys.impl.oldCode
Class GoalState  

java.lang.Object
  com.hp.hpl.jena.reasoner.rulesys.impl.oldCode.GoalState

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public class GoalState

extends java.lang.Object

Represents the state in a traversal of all the solutions of a given goal. This will traverse, in turn, all the matches in the underlying triple stores, all the memoized results currently in the GoalTable and then all the additional results which can be found by turns of the goal Generator crank, until the goal (or the whole derivation) is complete.

Version:

$Revision: 1.5 $ on $Date: 2005/02/21 12:18:04 $

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Field Summary
(package private) static org.apache.commons.logging.Log	logger
protected  GoalResults	results           The goal table entry for this goal
protected  int	solutionPointer           The index of the next memoized solution to return
protected  com.hp.hpl.jena.util.iterator.ClosableIterator	tripleMatches           An iterator over the matching triples in the stores

 

Constructor Summary

GoalState(com.hp.hpl.jena.util.iterator.ClosableIterator tripleMatches, GoalResults results)           Constructor.

 

Method Summary
void	close()           Close the GoalState, closing any still active iterators.
boolean	couldProcess()           Return true if there seems to be at least one new result available or if this can be stripped off the agenda because it has failed.
GoalResults	getGoalResultsEntry()           Return the GoalResults entry which this state is built in
java.lang.Object	next()           Return the next available result for this goal.
java.lang.String	toString()           Printable form

 

Methods inherited from class java.lang.Object

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

 

Field Detail

tripleMatches

protected com.hp.hpl.jena.util.iterator.ClosableIterator tripleMatches

An iterator over the matching triples in the stores

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results

protected GoalResults results

The goal table entry for this goal

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solutionPointer

protected int solutionPointer

The index of the next memoized solution to return

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logger

static org.apache.commons.logging.Log logger

Constructor Detail

GoalState

public GoalState(com.hp.hpl.jena.util.iterator.ClosableIterator tripleMatches,
                 GoalResults results)

Constructor. Create a GoalState which can traverse all the matches to a goal over a set of raw data plus derivations.

Method Detail

getGoalResultsEntry

public GoalResults getGoalResultsEntry()

Return the GoalResults entry which this state is built in

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next

public java.lang.Object next()

Return the next available result for this goal.

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couldProcess

public boolean couldProcess()

Return true if there seems to be at least one new result available or if this can be stripped off the agenda because it has failed.

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close

public void close()

Close the GoalState, closing any still active iterators.

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toString

public java.lang.String toString()

Printable form

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Home >> All >> com >> hp >> hpl >> jena >> reasoner >> rulesys >> impl >> [ oldCode overview ]	PREV CLASS  NEXT CLASS
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