Class ZeroLengthPathIteration
- java.lang.Object
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- org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<E,X>
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- org.eclipse.rdf4j.common.iteration.LookAheadIteration<BindingSet,QueryEvaluationException>
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- org.eclipse.rdf4j.query.algebra.evaluation.iterator.ZeroLengthPathIteration
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- All Implemented Interfaces:
AutoCloseable
,CloseableIteration<BindingSet,QueryEvaluationException>
,Iteration<BindingSet,QueryEvaluationException>
- Direct Known Subclasses:
LimitedSizeZeroLengthPathIteration
public class ZeroLengthPathIteration extends LookAheadIteration<BindingSet,QueryEvaluationException>
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Constructor Summary
Constructors Constructor Description ZeroLengthPathIteration(EvaluationStrategy evaluationStrategyImpl, Var subjectVar, Var objVar, Value subj, Value obj, Var contextVar, BindingSet bindings)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected boolean
add(Set<Value> reportedValues2, Value v)
add param v to the set reportedValues2Var
createAnonVar(String varName)
protected BindingSet
getNextElement()
Gets the next element.-
Methods inherited from class org.eclipse.rdf4j.common.iteration.LookAheadIteration
handleClose, hasNext, next, remove
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Methods inherited from class org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration
close, isClosed
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Constructor Detail
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ZeroLengthPathIteration
public ZeroLengthPathIteration(EvaluationStrategy evaluationStrategyImpl, Var subjectVar, Var objVar, Value subj, Value obj, Var contextVar, BindingSet bindings)
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Method Detail
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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 classLookAheadIteration<BindingSet,QueryEvaluationException>
- Returns:
- The next element, or null if no more elements are available.
- Throws:
QueryEvaluationException
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add
protected boolean add(Set<Value> reportedValues2, Value v) throws QueryEvaluationException
add param v to the set reportedValues2- Parameters:
reportedValues2
-v
-- Returns:
- true if v added to set and not yet present
- Throws:
QueryEvaluationException
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