org.eclipse.rdf4j.query.algebra.evaluation.iterator

Class GroupIterator

java.lang.Object

org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<E,X>

org.eclipse.rdf4j.common.iteration.CloseableIteratorIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

org.eclipse.rdf4j.query.algebra.evaluation.iterator.GroupIterator

All Implemented Interfaces:

AutoCloseable, org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>, org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

public class GroupIterator
extends org.eclipse.rdf4j.common.iteration.CloseableIteratorIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

Author:

David Huynh, Arjohn Kampman, Jeen Broekstra, James Leigh

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	GroupIterator.Key A unique key for a set of existing bindings.

Constructor Summary

Constructors

Constructor and Description
GroupIterator(EvaluationStrategy strategy, org.eclipse.rdf4j.query.algebra.Group group, org.eclipse.rdf4j.query.BindingSet parentBindings)
GroupIterator(EvaluationStrategy strategy, org.eclipse.rdf4j.query.algebra.Group group, org.eclipse.rdf4j.query.BindingSet parentBindings, long iterationCacheSyncThreshold)

Method Summary

Modifier and Type	Method and Description
protected void	handleClose()
boolean	hasNext()
org.eclipse.rdf4j.query.BindingSet	next()

Methods inherited from class org.eclipse.rdf4j.common.iteration.CloseableIteratorIteration

remove, setIterator

Methods inherited from class org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration

close, isClosed

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupIterator

public GroupIterator(EvaluationStrategy strategy,
                     org.eclipse.rdf4j.query.algebra.Group group,
                     org.eclipse.rdf4j.query.BindingSet parentBindings)
              throws org.eclipse.rdf4j.query.QueryEvaluationException

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

GroupIterator

public GroupIterator(EvaluationStrategy strategy,
                     org.eclipse.rdf4j.query.algebra.Group group,
                     org.eclipse.rdf4j.query.BindingSet parentBindings,
                     long iterationCacheSyncThreshold)
              throws org.eclipse.rdf4j.query.QueryEvaluationException

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

Method Detail

hasNext

public boolean hasNext()
                throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

hasNext in interface org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

Overrides:

hasNext in class org.eclipse.rdf4j.common.iteration.CloseableIteratorIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

next

public org.eclipse.rdf4j.query.BindingSet next()
                                        throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

next in interface org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

Overrides:

next in class org.eclipse.rdf4j.common.iteration.CloseableIteratorIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

handleClose

protected void handleClose()
                    throws org.eclipse.rdf4j.query.QueryEvaluationException

Overrides:

handleClose in class org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException