Class LookAheadIteration<E>
java.lang.Object
org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<E>
org.eclipse.rdf4j.common.iteration.LookAheadIteration<E>
- All Implemented Interfaces:
AutoCloseable,Iterator<E>,CloseableIteration<E>
- Direct Known Subclasses:
AsyncIteratorBuffer,AsyncIteratorDirect,AsyncIteratorReadAhead,BindLeftJoinIteration,CrossProductIteration,DescribeIteration,DistinctModelReducingUnionIteration,FedXPathIteration,FedXZeroLengthPathIteration,FilteringIteration,HashJoinIteration,IndependentJoingroupBindingsIteration,IndependentJoingroupBindingsIteration2,IndependentJoingroupBindingsIteration3,JoinExecutorBase,JoinIterator,LeftJoinIterator,MemTripleIterator,MultiProjectionIterator,ParallelExecutorBase,ParallelServiceExecutor,PathIteration,QueueIteration,SortedIteration,SPARQLCrossProductIteration,UnionIteration,ZeroLengthPathIteration
An Iteration that looks one element ahead, if necessary, to handle calls to
hasNext(). This is a convenient
super class for Iterations that have no easy way to tell if there are any more results, but still should implement
the java.util.Iteration interface.-
Constructor Summary
Constructors -
Method Summary
Methods inherited from class org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration
close, handleClose, isClosedMethods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface org.eclipse.rdf4j.common.iteration.CloseableIteration
streamMethods inherited from interface java.util.Iterator
forEachRemaining
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Constructor Details
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LookAheadIteration
protected LookAheadIteration()
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Method Details
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getNextElement
Gets the next element. Subclasses should implement this method so that it returns the next element.- Returns:
- The next element, or null if no more elements are available.
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hasNext
public final boolean hasNext() -
next
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remove
public void remove()Throws anUnsupportedOperationException.
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