Class MultiProjectionIterator
java.lang.Object
org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<E,X>
org.eclipse.rdf4j.common.iteration.LookAheadIteration<BindingSet,QueryEvaluationException>
org.eclipse.rdf4j.query.algebra.evaluation.iterator.MultiProjectionIterator
- All Implemented Interfaces:
AutoCloseable
,CloseableIteration<BindingSet,
,QueryEvaluationException> Iteration<BindingSet,
QueryEvaluationException>
public class MultiProjectionIterator
extends LookAheadIteration<BindingSet,QueryEvaluationException>
- Author:
- Arjohn Kampman, James Leigh
-
Constructor Summary
ConstructorDescriptionMultiProjectionIterator
(MultiProjection multiProjection, CloseableIteration<BindingSet, QueryEvaluationException> iter, BindingSet bindings) -
Method Summary
Modifier and TypeMethodDescriptionprotected BindingSet
Gets the next element.protected void
Called byAbstractCloseableIteration.close()
when it is called for the first time.Methods inherited from class org.eclipse.rdf4j.common.iteration.LookAheadIteration
hasNext, next, remove
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
-
Constructor Details
-
MultiProjectionIterator
public MultiProjectionIterator(MultiProjection multiProjection, CloseableIteration<BindingSet, QueryEvaluationException> iter, BindingSet bindings)
-
-
Method Details
-
getNextElement
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
-
handleClose
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 classLookAheadIteration<BindingSet,
QueryEvaluationException> - Throws:
QueryEvaluationException
-