Package org.eclipse.rdf4j.federated.evaluation.iterator

Class FilteringInsertBindingsIteration

java.lang.Object

org.eclipse.rdf4j.federated.evaluation.iterator.FilteringInsertBindingsIteration

All Implemented Interfaces:

AutoCloseable, Iterator<BindingSet>, CloseableIteration<BindingSet>

public class FilteringInsertBindingsIteration
extends Object
implements CloseableIteration<BindingSet>

Filters iteration according to specified filterExpr and inserts original bindings into filtered results.

Author:

Andreas Schwarte

Constructor Summary

Constructors

Constructor	Description
FilteringInsertBindingsIteration(FilterValueExpr filterExpr, BindingSet bindings, CloseableIteration<BindingSet> iter, FederationEvalStrategy strategy)

Method Summary

Modifier and Type	Method	Description
protected boolean	accept(BindingSet bindings)
final void	close()	Calls invalid reference #handleClose() upon first call and makes sure the resource closures are only executed once.
boolean	hasNext()
BindingSet	next()
void	remove()	Removes the last element that has been returned from the wrapped Iteration.

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

Constructor Details

FilteringInsertBindingsIteration

public FilteringInsertBindingsIteration(FilterValueExpr filterExpr,
 BindingSet bindings,
 CloseableIteration<BindingSet> iter,
 FederationEvalStrategy strategy)
                                 throws QueryEvaluationException

Throws:

QueryEvaluationException

Method Details

next

public BindingSet next()
                throws QueryEvaluationException

Specified by:

next in interface Iterator<BindingSet>

Throws:

QueryEvaluationException

accept

protected boolean accept(BindingSet bindings)
                  throws QueryEvaluationException

Throws:

QueryEvaluationException

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<BindingSet>

remove

public void remove()

Removes the last element that has been returned from the wrapped Iteration.

Specified by:

remove in interface Iterator<BindingSet>

Throws:

UnsupportedOperationException - If the wrapped Iteration does not support the remove operation.

IllegalStateException - if the Iteration has been closed, or if next() has not yet been called, or remove() has already been called after the last call to next().

close

public final void close()

Calls

invalid reference

#handleClose()

upon first call and makes sure the resource closures are only executed once.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface CloseableIteration<BindingSet>