Class GroupIterator

java.lang.Object

org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<BindingSet>

org.eclipse.rdf4j.common.iteration.AbstractCloseableIteratorIteration<BindingSet>

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

All Implemented Interfaces:

AutoCloseable, Iterator<BindingSet>, CloseableIteration<BindingSet>

public class GroupIterator
extends AbstractCloseableIteratorIteration<BindingSet>

Author:

David Huynh, Arjohn Kampman, Jeen Broekstra, James Leigh, Jerven Bolleman, Tomas Kovachev

Field Summary

Fields inherited from interface CloseableIteration

EMPTY_STATEMENT_ITERATION

Constructor Summary

Constructors

Constructor	Description
GroupIterator(EvaluationStrategy strategy, Group group, BindingSet parentBindings, long iterationCacheSyncThreshold, QueryEvaluationContext context)	Deprecated.
GroupIterator(EvaluationStrategy strategy, Group group, BindingSet parentBindings, long iterationCacheSyncThreshold, QueryEvaluationContext context, ValueFactory vf, CollectionFactory cf)
GroupIterator(EvaluationStrategy strategy, Group group, BindingSet parentBindings, QueryEvaluationContext context)

Method Summary

Modifier and Type	Method	Description
protected Iterator<BindingSet>	getIterator()
void	handleClose()	Called by AbstractCloseableIteration.close() when it is called for the first time.

Methods inherited from class AbstractCloseableIteratorIteration

hasNext, next, remove

Methods inherited from class AbstractCloseableIteration

close, isClosed

Methods inherited from class Object

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

Methods inherited from interface CloseableIteration

stream

Methods inherited from interface Iterator

forEachRemaining

Constructor Details

GroupIterator

public GroupIterator(EvaluationStrategy strategy,
 Group group,
 BindingSet parentBindings,
 QueryEvaluationContext context)
              throws QueryEvaluationException

Throws:

QueryEvaluationException

GroupIterator

@Deprecated
public GroupIterator(EvaluationStrategy strategy,
 Group group,
 BindingSet parentBindings,
 long iterationCacheSyncThreshold,
 QueryEvaluationContext context)
              throws QueryEvaluationException

Deprecated.

Throws:

QueryEvaluationException

GroupIterator

public GroupIterator(EvaluationStrategy strategy,
 Group group,
 BindingSet parentBindings,
 long iterationCacheSyncThreshold,
 QueryEvaluationContext context,
 ValueFactory vf,
 CollectionFactory cf)
              throws QueryEvaluationException

Throws:

QueryEvaluationException

Method Details

handleClose

public void handleClose()
                 throws QueryEvaluationException

Description copied from class: AbstractCloseableIteration

Called by AbstractCloseableIteration.close() when it is called for the first time. This method is only called once on each iteration. By default, this method does nothing.

Specified by:

handleClose in class AbstractCloseableIteration<BindingSet>

Throws:

QueryEvaluationException

getIterator

protected Iterator<BindingSet> getIterator()
                                    throws QueryEvaluationException

Specified by:

getIterator in class AbstractCloseableIteratorIteration<BindingSet>

Throws:

QueryEvaluationException