Java Doc for LPTopGoalIterator.java in  » RSS-RDF » Jena-2.5.5 » com » hp » hpl » jena » reasoner » rulesys » impl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » RSS RDF » Jena 2.5.5 » com.hp.hpl.jena.reasoner.rulesys.impl   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.hp.hpl.jena.reasoner.rulesys.impl.LPTopGoalIterator LPTopGoalIterator public class LPTopGoalIterator implements ClosableIterator,LPInterpreterContext(Code) Wraps up the results an LP rule engine instance into a conventional iterator. Ensures that the engine is closed and detached from the inference graph if the iterator hits the end of the result set. author:    Dave Reynolds version:    $Revision: 1.13 $ on $Date: 2008/01/02 12:06:16 $ Field Summary protected  boolean checkReadyNeeded      protected  Set choicePoints       BackwardRuleInfGraphI infgraph      protected  int initialVersion       LPInterpreter interpreter      protected  boolean isReady       Object lookAhead      protected  ConsumerChoicePointFrame nextToRun      The choice point most recently notified as ready to run.  boolean started      Constructor Summary public   LPTopGoalIterator(LPInterpreter engine)      Constructor. Method Summary public synchronized  void close()      public  boolean hasNext()      public  boolean isReady()      Return true if the iterator is ready to be scheduled (i.e. public  Object next()      public  void notifyBlockedOn(ConsumerChoicePointFrame ccp)      Notify this context that a brach was suspended awaiting futher results from the given generator. public  void notifyFinished(ConsumerChoicePointFrame ccp)      Notify this context that the given choice point has terminated and can be remove from the wait list. public  void remove()      public  void setReady(ConsumerChoicePointFrame ccp)      Directly set that this generator is ready (because the generating for one of its generatingCPs has produced new results). Field Detail checkReadyNeeded protected boolean checkReadyNeeded(Code) set to true if at least one branch has block so an active readiness check is required choicePoints protected Set choicePoints(Code) The set of choice points that the top level interpter is waiting for infgraph BackwardRuleInfGraphI infgraph(Code) The parent InfGraph -- retained on close to allow CME detection initialVersion protected int initialVersion(Code) Version stamp of the graph when we start interpreter LPInterpreter interpreter(Code) The parent backward chaining engine - nulled on close isReady protected boolean isReady(Code) set to true if we should be able to usefully run lookAhead Object lookAhead(Code) The next result to be returned, or null if we have finished nextToRun protected ConsumerChoicePointFrame nextToRun(Code) The choice point most recently notified as ready to run. started boolean started(Code) True if the iteration has started Constructor Detail LPTopGoalIterator public LPTopGoalIterator(LPInterpreter engine)(Code) Constructor. Wraps a top level goal state as an iterator Method Detail close public synchronized void close()(Code) See Also:   com.hp.hpl.jena.util.iterator.ClosableIterator.close hasNext public boolean hasNext()(Code) See Also:   java.util.Iterator.hasNext isReady public boolean isReady()(Code) Return true if the iterator is ready to be scheduled (i.e. it is not known to be complete and not known to be waiting for a dependent generator). next public Object next()(Code) See Also:   java.util.Iterator.next notifyBlockedOn public void notifyBlockedOn(ConsumerChoicePointFrame ccp)(Code) Notify this context that a brach was suspended awaiting futher results from the given generator. notifyFinished public void notifyFinished(ConsumerChoicePointFrame ccp)(Code) Notify this context that the given choice point has terminated and can be remove from the wait list. remove public void remove()(Code) See Also:   java.util.Iterator.remove setReady public void setReady(ConsumerChoicePointFrame ccp)(Code) Directly set that this generator is ready (because the generating for one of its generatingCPs has produced new results). Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)