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

Class LimitedSizeSPARQLMinusIteration

java.lang.Object

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

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

org.eclipse.rdf4j.common.iteration.FilterIteration<org.eclipse.rdf4j.query.BindingSet,X>

org.eclipse.rdf4j.query.algebra.evaluation.iterator.SPARQLMinusIteration<org.eclipse.rdf4j.query.QueryEvaluationException>

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

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 LimitedSizeSPARQLMinusIteration
extends SPARQLMinusIteration<org.eclipse.rdf4j.query.QueryEvaluationException>

Author:

Jerven Bolleman, SIB Swiss Institute of Bioinformatics

Field Summary

Fields inherited from class org.eclipse.rdf4j.common.iteration.IterationWrapper

wrappedIter

Constructor Summary

Constructors

Constructor and Description
LimitedSizeSPARQLMinusIteration(org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> leftArg, org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> rightArg, AtomicLong used, long maxSize) Creates a new MinusIteration that returns the results of the left argument minus the results of the right argument.
LimitedSizeSPARQLMinusIteration(org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> leftArg, org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> rightArg, boolean distinct, AtomicLong used, long maxSize) Creates a new SPARQLMinusIteration that returns the results of the left argument minus the results of the right argument.

Method Summary

Modifier and Type	Method and Description
protected void	handleClose() After closing the set is cleared and any "used" capacity for collections is returned.
protected Set<org.eclipse.rdf4j.query.BindingSet>	makeSet(org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> rightArg2)

Methods inherited from class org.eclipse.rdf4j.query.algebra.evaluation.iterator.SPARQLMinusIteration

accept, clearExcludeSet, getRightArg, makeSet, makeSet

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

hasNext, next

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

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

Constructor Detail

LimitedSizeSPARQLMinusIteration

public LimitedSizeSPARQLMinusIteration(org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> leftArg,
                                       org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> rightArg,
                                       AtomicLong used,
                                       long maxSize)

Creates a new MinusIteration that returns the results of the left argument minus the results of the right argument. By default, duplicates are not filtered from the results.

Parameters:

leftArg - An Iteration containing the main set of elements.

rightArg - An Iteration containing the set of elements that should be filtered from the main set. * @param used An atomic long used to monitor how many elements are in the set collections.

used - An atomic long used to monitor how many elements are in the set collections.

maxSize - Maximum size allowed by the sum of all collections used by the LimitedSizeQueryEvaluatlion.

LimitedSizeSPARQLMinusIteration

public LimitedSizeSPARQLMinusIteration(org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> leftArg,
                                       org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> rightArg,
                                       boolean distinct,
                                       AtomicLong used,
                                       long maxSize)

Creates a new SPARQLMinusIteration that returns the results of the left argument minus the results of the right argument.

Parameters:

leftArg - An Iteration containing the main set of elements.

rightArg - An Iteration containing the set of elements that should be filtered from the main set.

distinct - Flag indicating whether duplicate elements should be filtered from the result.

used - An atomic long used to monitor how many elements are in the set collections.

maxSize - Maximum size allowed by the sum of all collections used by the LimitedSizeQueryEvaluatlion.

Method Detail

makeSet

protected Set<org.eclipse.rdf4j.query.BindingSet> makeSet(org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> rightArg2)
                                                   throws org.eclipse.rdf4j.query.QueryEvaluationException

Overrides:

makeSet in class SPARQLMinusIteration<org.eclipse.rdf4j.query.QueryEvaluationException>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

handleClose

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

After closing the set is cleared and any "used" capacity for collections is returned.

Overrides:

handleClose in class SPARQLMinusIteration<org.eclipse.rdf4j.query.QueryEvaluationException>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException