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:
CrossProductIteration
,DescribeIteration
,DistinctModelReducingUnionIteration
,FilteringIteration
,HashJoinIteration
,IndependentJoingroupBindingsIteration
,IndependentJoingroupBindingsIteration2
,IndependentJoingroupBindingsIteration3
,JoinExecutorBase
,JoinIterator
,LeftJoinIterator
,MemTripleIterator
,MultiProjectionIterator
,ParallelExecutorBase
,ParallelServiceExecutor
,PathIteration
,QueueIteration
,SPARQLCrossProductIteration
,UnionIteration
,ZeroLengthPathIteration
@Deprecated(since="4.1.0") public abstract class LookAheadIteration<E> extends AbstractCloseableIteration<E>
Deprecated.An Iteration that looks one element ahead, if necessary, to handle calls tohasNext()
. 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 Modifier Constructor Description protected
LookAheadIteration()
Deprecated.
-
Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Deprecated Methods Modifier and Type Method Description protected abstract E
getNextElement()
Deprecated.Gets the next element.protected void
handleClose()
Deprecated.Called byAbstractCloseableIteration.close()
when it is called for the first time.boolean
hasNext()
Deprecated.E
next()
Deprecated.void
remove()
Deprecated.Throws anUnsupportedOperationException
.-
Methods inherited from class org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration
close, isClosed
-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
-
Methods inherited from interface org.eclipse.rdf4j.common.iteration.CloseableIteration
stream
-
Methods inherited from interface java.util.Iterator
forEachRemaining
-
-
-
-
Method Detail
-
getNextElement
protected abstract E getNextElement()
Deprecated.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.
-
hasNext
public final boolean hasNext()
Deprecated.
-
next
public final E next()
Deprecated.
-
remove
public void remove()
Deprecated.Throws anUnsupportedOperationException
.
-
handleClose
protected void handleClose()
Deprecated.Description copied from class:AbstractCloseableIteration
Called byAbstractCloseableIteration.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 classAbstractCloseableIteration<E>
-
-