Class UnionIteration<E,X extends Exception>
- java.lang.Object
-
- org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<E,X>
-
- org.eclipse.rdf4j.common.iteration.LookAheadIteration<E,X>
-
- org.eclipse.rdf4j.common.iteration.UnionIteration<E,X>
-
- All Implemented Interfaces:
AutoCloseable
,CloseableIteration<E,X>
,Iteration<E,X>
public class UnionIteration<E,X extends Exception> extends LookAheadIteration<E,X>
An Iteration that returns the bag union of the results of a number of Iterations. 'Bag union' means that the UnionIteration does not filter duplicate objects.
-
-
Constructor Summary
Constructors Constructor Description UnionIteration(Iterable<? extends Iteration<? extends E,X>> args)
Creates a new UnionIteration that returns the bag union of the results of a number of Iterations.UnionIteration(Iteration<? extends E,X>... args)
Creates a new UnionIteration that returns the bag union of the results of a number of Iterations.
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected E
getNextElement()
Gets the next element.protected void
handleClose()
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
-
-
-
-
Method Detail
-
getNextElement
protected E getNextElement() throws X extends Exception
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<E,X extends Exception>
- Returns:
- The next element, or null if no more elements are available.
- Throws:
X extends Exception
-
handleClose
protected void handleClose() throws X extends Exception
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<E,X extends Exception>
- Throws:
X
X extends Exception
-
-