Package org.eclipse.rdf4j.federated.evaluation.iterator

Class IndependentJoingroupBindingsIteration

java.lang.Object

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

org.eclipse.rdf4j.common.iteration.LookAheadIteration<BindingSet,QueryEvaluationException>

org.eclipse.rdf4j.federated.evaluation.iterator.IndependentJoingroupBindingsIteration

All Implemented Interfaces:

AutoCloseable, CloseableIteration<BindingSet,QueryEvaluationException>, Iteration<BindingSet,QueryEvaluationException>

public class IndependentJoingroupBindingsIteration
extends LookAheadIteration<BindingSet,QueryEvaluationException>

Inserts original bindings into the result.

Author:

Andreas Schwarte

Field Summary

Fields

Modifier and Type	Field	Description
protected BindingSet	bindings
protected int	currentIdx
protected CloseableIteration<BindingSet,QueryEvaluationException>	iter
protected ArrayList<BindingSet>	result

Constructor Summary

Constructors

Constructor	Description
IndependentJoingroupBindingsIteration(CloseableIteration<BindingSet,QueryEvaluationException> iter, BindingSet bindings)

Method Summary

Modifier and Type	Method	Description
protected ArrayList<BindingSet>	computeResult()
protected BindingSet	getNextElement()	Gets the next element.
protected void	handleClose()	Called by AbstractCloseableIteration.close() when it is called for the first time.

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

hasNext, next, remove

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

Methods inherited from interface org.eclipse.rdf4j.common.iteration.CloseableIteration

stream

Field Detail

bindings

protected final BindingSet bindings

iter

protected final CloseableIteration<BindingSet,QueryEvaluationException> iter

result

protected ArrayList<BindingSet> result

currentIdx

protected int currentIdx

Constructor Detail

IndependentJoingroupBindingsIteration

public IndependentJoingroupBindingsIteration(CloseableIteration<BindingSet,QueryEvaluationException> iter,
                                             BindingSet bindings)

Method Detail

getNextElement

protected BindingSet getNextElement()
                             throws QueryEvaluationException

Description copied from class: LookAheadIteration

Gets the next element. Subclasses should implement this method so that it returns the next element.

Specified by:

getNextElement in class LookAheadIteration<BindingSet,QueryEvaluationException>

Returns:

The next element, or null if no more elements are available.

Throws:

QueryEvaluationException

computeResult

protected ArrayList<BindingSet> computeResult()
                                       throws QueryEvaluationException

Throws:

QueryEvaluationException

handleClose

protected 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.

Overrides:

handleClose in class LookAheadIteration<BindingSet,QueryEvaluationException>

Throws:

QueryEvaluationException