Class DistinctIteration<E>
- java.lang.Object
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- org.eclipse.rdf4j.common.iteration.FilterIteration<E>
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- org.eclipse.rdf4j.common.iteration.DistinctIteration<E>
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- All Implemented Interfaces:
AutoCloseable,Iterator<E>,CloseableIteration<E>
public class DistinctIteration<E> extends FilterIteration<E>
An Iteration that filters any duplicate elements from an underlying iterator.
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Constructor Summary
Constructors Constructor Description DistinctIteration(CloseableIteration<? extends E> iter)Creates a new DistinctIterator.DistinctIteration(CloseableIteration<? extends E> iter, Supplier<Set<E>> setMaker)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected booleanaccept(E object)Returns true if the specified object hasn't been seen before.protected booleanadd(E object)protected voidhandleClose()Closes this Iteration and also closes the wrapped Iteration if it is aCloseableIteration.protected Set<E>makeSet()-
Methods inherited from class org.eclipse.rdf4j.common.iteration.FilterIteration
close, hasNext, next, remove
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.eclipse.rdf4j.common.iteration.CloseableIteration
stream
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Methods inherited from interface java.util.Iterator
forEachRemaining
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Constructor Detail
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DistinctIteration
public DistinctIteration(CloseableIteration<? extends E> iter)
Creates a new DistinctIterator.- Parameters:
iter- The underlying iterator.
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DistinctIteration
public DistinctIteration(CloseableIteration<? extends E> iter, Supplier<Set<E>> setMaker)
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Method Detail
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accept
protected boolean accept(E object)
Returns true if the specified object hasn't been seen before.- Specified by:
acceptin classFilterIteration<E>- Parameters:
object- The object to be tested.- Returns:
- true if the object should be returned, false otherwise.
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handleClose
protected void handleClose()
Description copied from class:FilterIterationCloses this Iteration and also closes the wrapped Iteration if it is aCloseableIteration.- Specified by:
handleClosein classFilterIteration<E>
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add
protected boolean add(E object)
- Parameters:
object- to put into the set
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