Package org.eclipse.rdf4j.federated.evaluation

Class FedXZeroLengthPathEvaluationStep

java.lang.Object

org.eclipse.rdf4j.federated.evaluation.FedXZeroLengthPathEvaluationStep

All Implemented Interfaces:

QueryEvaluationStep

public final class FedXZeroLengthPathEvaluationStep
extends Object
implements QueryEvaluationStep

An evaluation step used for FedXZeroLengthPath.

See Also:

• ZeroLengthPathEvaluationStep

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.QueryEvaluationStep

QueryEvaluationStep.DelayedEvaluationIteration

Field Summary

Fields inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.QueryEvaluationStep

EMPTY, EMPTY_ITERATION

Constructor Summary

Constructors

Constructor	Description
FedXZeroLengthPathEvaluationStep(Var subjectVar, Var objVar, Var contextVar, QueryValueEvaluationStep subPrep, QueryValueEvaluationStep objPrep, EvaluationStrategy strategy, QueryEvaluationContext context, Supplier<List<StatementSource>> statementSources, Supplier<QueryInfo> queryInfo)

Method Summary

Modifier and Type	Method	Description
CloseableIteration<BindingSet>	evaluate(BindingSet bindings)
protected FedXZeroLengthPathIteration	getZeroLengthPathIterator(BindingSet bindings, Var subjectVar, Var objVar, Var contextVar, Value subj, Value obj, QueryEvaluationContext context)

Methods inherited from class java.lang.Object

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

Constructor Details

FedXZeroLengthPathEvaluationStep

public FedXZeroLengthPathEvaluationStep(Var subjectVar,
 Var objVar,
 Var contextVar,
 QueryValueEvaluationStep subPrep,
 QueryValueEvaluationStep objPrep,
 EvaluationStrategy strategy,
 QueryEvaluationContext context,
 Supplier<List<StatementSource>> statementSources,
 Supplier<QueryInfo> queryInfo)

Method Details

evaluate

public CloseableIteration<BindingSet> evaluate(BindingSet bindings)

Specified by:

evaluate in interface QueryEvaluationStep

getZeroLengthPathIterator

protected FedXZeroLengthPathIteration getZeroLengthPathIterator(BindingSet bindings,
 Var subjectVar,
 Var objVar,
 Var contextVar,
 Value subj,
 Value obj,
 QueryEvaluationContext context)