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 final BindingSet	bindings
protected int	currentIdx
protected final 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.

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

handleClose, 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.Iteration

stream

Field Details

bindings

protected final BindingSet bindings

iter

protected final CloseableIteration<BindingSet,QueryEvaluationException> iter

result

protected ArrayList<BindingSet> result

currentIdx

protected int currentIdx

Constructor Details

IndependentJoingroupBindingsIteration

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

Method Details

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