Package org.eclipse.rdf4j.sail.extensiblestore

Class FilteringIteration<E extends ExtensibleStatement,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.sail.extensiblestore.FilteringIteration<E,X>

All Implemented Interfaces:

AutoCloseable, CloseableIteration<E,X>, Iteration<E,X>

@Experimental
public class FilteringIteration<E extends ExtensibleStatement,X extends Exception>
extends LookAheadIteration<E,X>

A wrapper for an Iteration that filters the statements against a pattern similar to getStatements(Resource subject, IRI predicate, Value object, Resource... context).

Constructor Summary

Constructors

Constructor	Description
FilteringIteration(CloseableIteration<E,X> wrappedIteration, Resource subject, IRI predicate, Value object, boolean inferred, Resource... context)
FilteringIteration(Iteration<E,X> wrappedIteration, Resource subject, IRI predicate, Value object, boolean inferred, Resource... context)

Method Summary

Modifier and Type	Method	Description
protected E	getNextElement()	Gets the next element.
protected void	handleClose()	Called by AbstractCloseableIteration.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.Iteration

stream

Constructor Details

FilteringIteration

public FilteringIteration(CloseableIteration<E,X> wrappedIteration,
 Resource subject,
 IRI predicate,
 Value object,
 boolean inferred,
 Resource... context)

FilteringIteration

public FilteringIteration(Iteration<E,X> wrappedIteration,
 Resource subject,
 IRI predicate,
 Value object,
 boolean inferred,
 Resource... context)

Method Details

getNextElement

protected E getNextElement()
                    throws X

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 class LookAheadIteration<E extends ExtensibleStatement,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

Description copied from class: AbstractCloseableIteration

Called by AbstractCloseableIteration.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 class LookAheadIteration<E extends ExtensibleStatement,X extends Exception>

Throws:

X