Class ZeroLengthPathEvaluationStep
- java.lang.Object
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- org.eclipse.rdf4j.query.algebra.evaluation.impl.evaluationsteps.ZeroLengthPathEvaluationStep
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- All Implemented Interfaces:
QueryEvaluationStep
public final class ZeroLengthPathEvaluationStep extends java.lang.Object implements QueryEvaluationStep
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.QueryEvaluationStep
QueryEvaluationStep.DelayedEvaluationIteration
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Field Summary
Fields Modifier and Type Field Description private QueryEvaluationContext
context
private Var
contextVar
private QueryValueEvaluationStep
objPrep
private Var
objVar
private EvaluationStrategy
strategy
private Var
subjectVar
private QueryValueEvaluationStep
subPrep
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Fields inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.QueryEvaluationStep
EMPTY, EMPTY_ITERATION
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Constructor Summary
Constructors Constructor Description ZeroLengthPathEvaluationStep(Var subjectVar, Var objVar, Var contextVar, QueryValueEvaluationStep subPrep, QueryValueEvaluationStep objPrep, EvaluationStrategy strategy, QueryEvaluationContext context)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description CloseableIteration<BindingSet,QueryEvaluationException>
evaluate(BindingSet bindings)
protected ZeroLengthPathIteration
getZeroLengthPathIterator(BindingSet bindings, Var subjectVar, Var objVar, Var contextVar, Value subj, Value obj, QueryEvaluationContext context)
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Field Detail
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subjectVar
private final Var subjectVar
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objVar
private final Var objVar
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contextVar
private final Var contextVar
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subPrep
private final QueryValueEvaluationStep subPrep
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objPrep
private final QueryValueEvaluationStep objPrep
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strategy
private final EvaluationStrategy strategy
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context
private final QueryEvaluationContext context
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Constructor Detail
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ZeroLengthPathEvaluationStep
public ZeroLengthPathEvaluationStep(Var subjectVar, Var objVar, Var contextVar, QueryValueEvaluationStep subPrep, QueryValueEvaluationStep objPrep, EvaluationStrategy strategy, QueryEvaluationContext context)
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Method Detail
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evaluate
public CloseableIteration<BindingSet,QueryEvaluationException> evaluate(BindingSet bindings)
- Specified by:
evaluate
in interfaceQueryEvaluationStep
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getZeroLengthPathIterator
protected ZeroLengthPathIteration getZeroLengthPathIterator(BindingSet bindings, Var subjectVar, Var objVar, Var contextVar, Value subj, Value obj, QueryEvaluationContext context)
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