Class UnionIterator<E>
- java.lang.Object
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- org.eclipse.rdf4j.common.iterator.AbstractCloseableIterator<E>
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- org.eclipse.rdf4j.common.iterator.LookAheadIterator<E>
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- org.eclipse.rdf4j.common.iterator.UnionIterator<E>
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- All Implemented Interfaces:
java.io.Closeable
,java.lang.AutoCloseable
,java.util.Iterator<E>
public class UnionIterator<E> extends LookAheadIterator<E>
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Field Summary
Fields Modifier and Type Field Description private java.util.Iterator<? extends java.lang.Iterable<? extends E>>
argIter
private java.util.Iterator<? extends E>
currentIter
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Constructor Summary
Constructors Constructor Description UnionIterator(java.lang.Iterable<? extends E>... args)
Creates a new UnionIterator that returns the bag union of the results of a number of Iterators.UnionIterator(java.lang.Iterable<? extends java.lang.Iterable<? extends E>> args)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected E
getNextElement()
Gets the next element.protected void
handleClose()
Called byAbstractCloseableIterator.close()
when it is called for the first time.-
Methods inherited from class org.eclipse.rdf4j.common.iterator.LookAheadIterator
handleAlreadyClosed, hasNext, next, remove
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Methods inherited from class org.eclipse.rdf4j.common.iterator.AbstractCloseableIterator
close, isClosed
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Constructor Detail
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UnionIterator
public UnionIterator(java.lang.Iterable<? extends E>... args)
Creates a new UnionIterator that returns the bag union of the results of a number of Iterators.- Parameters:
args
- The Iterators containing the elements to iterate over.
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UnionIterator
public UnionIterator(java.lang.Iterable<? extends java.lang.Iterable<? extends E>> args)
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Method Detail
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getNextElement
protected E getNextElement()
Description copied from class:LookAheadIterator
Gets the next element. Subclasses should implement this method so that it returns the next element.- Specified by:
getNextElement
in classLookAheadIterator<E>
- Returns:
- The next element, or null if no more elements are available.
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handleClose
protected void handleClose() throws java.io.IOException
Description copied from class:AbstractCloseableIterator
Called byAbstractCloseableIterator.close()
when it is called for the first time. This method is only called once on each iteration. By default, this method does nothing.- Overrides:
handleClose
in classLookAheadIterator<E>
- Throws:
java.io.IOException
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