Package org.eclipse.rdf4j.common.iteration

Interface CloseableIteration<E,X extends Exception>

All Superinterfaces:

AutoCloseable, Iteration<E,X>

All Known Subinterfaces:

GraphQueryResult, QueryResult<T>, TupleQueryResult

All Known Implementing Classes:

AbstractCloseableIteration, AbstractParserQuery.QueryInterruptIteration, AbstractParserQuery.QueryInterruptIteration, BackgroundGraphResult, BackgroundTupleResult, BadlyDesignedLeftJoinIterator, BottomUpJoinIterator, BoundJoinConversionIteration, BoundJoinVALUESConversionIteration, CachedGraphQueryResult, CachedTupleQueryResult, CleanerGraphQueryResult, CleanerTupleQueryResult, CloseableIteratorIteration, CloseablePeakableIteration, CloseDependentConnectionIteration, CollectionIteration, CollectionIteration, CompatibleBindingSetFilter, ConsumingIteration, ControlledWorkerBoundJoin, ControlledWorkerJoin, ControlledWorkerLeftJoin, ControlledWorkerUnion, ConvertingIteration, CrossProductIteration, DelayedEvaluationIteration, DelayedIteration, DescribeIteration, DistinctIteration, DistinctModelReducingUnionIteration, DualUnionIteration, EmptyIteration, ExceptionConvertingIteration, ExtensionIterator, FederatedDescribeIteration, FedXQueueCursor, FilteringInsertBindingsIteration, FilteringIteration, FilteringIteration, FilterIteration, FilterIterator, GraphQueryResultImpl, GraphToBindingSetConversionIteration, GroupedCheckConversionIteration, GroupIterator, HashJoin, HashJoinIteration, IndependentJoingroupBindingsIteration, IndependentJoingroupBindingsIteration2, IndependentJoingroupBindingsIteration3, InsertBindingSetCursor, InsertBindingsIteration, IntersectIteration, IteratingGraphQueryResult, IteratingTupleQueryResult, IterationWrapper, JoinExecutorBase, JoinExecutorBase, JoinExecutorBase, JoinIterator, LazyMutableClosableIteration, LeftJoinIterator, LimitedSizeDistinctIteration, LimitIteration, LockingIteration, LoggingCloseableIteration, LookAheadIteration, MemStatementIterator, MemTripleIterator, MinusIteration, MultiProjectionIterator, MutableTupleQueryResult, OffsetIteration, OrderIterator, ParallelExecutorBase, ParallelServiceExecutor, PathIteration, PrintingIteration, ProjectionIterator, QueryContextIteration, QueryEvaluationStep.DelayedEvaluationIteration, QueryResultIteration, QueueCursor, QueueIteration, ReducedIteration, RepositoryExceptionConvertingIteration, RepositoryResult, ReusableGraphQueryResult, ReusableTupleQueryResult, ServiceCrossProductIteration, ServiceJoinConversionIteration, ServiceJoinConversionIteration, ServiceJoinIterator, SilentIteration, SilentIteration, SingleBindingSetIteration, SingletonIteration, SPARQLCrossProductIteration, SPARQLMinusIteration, StatementConversionIteration, StopRemainingExecutionsOnCloseIteration, SynchronousBoundJoin, SynchronousJoin, SynchronousWorkerUnion, TimeLimitIteration, TripleSourceIterationWrapper, TupleQueryResultImpl, UnionExecutorBase, UnionIteration, WorkerUnionBase, ZeroLengthPathIteration

@Deprecated(since="4.1.0")
public interface CloseableIteration<E,X extends Exception>
extends Iteration<E,X>, AutoCloseable

Deprecated.

In the future this interface will stop extending Iteration and instead declare the same interface methods directly. The interface will also stop requiring implementations to automatically close when exhausted, instead making this an optional feature and requiring the user to always call close. This interface may also be removed.

An Iteration that can be closed to free resources that it is holding. CloseableIterations automatically free their resources when exhausted. If not read until exhaustion or if you want to make sure the iteration is properly closed, any code using the iterator should be placed in a try-with-resources block, closing the iteration automatically, e.g.:

 try (CloseableIteration<Object, Exception> iter = ...) {
    // read objects from the iterator
 }
 catch(Exception e) {
   // process the exception that can be thrown while processing.
 }
 

Method Summary

Modifier and Type	Method	Description
void	close()	Deprecated. Closes this iteration, freeing any resources that it is holding.
default Stream<E>	stream()	Deprecated. Convert the results to a Java 8 Stream.

Methods inherited from interface org.eclipse.rdf4j.common.iteration.Iteration

hasNext, next, remove

Method Detail

stream

default Stream<E> stream()

Deprecated.

Convert the results to a Java 8 Stream.

Specified by:

stream in interface Iteration<E,X extends Exception>

Returns:

stream

close

void close()
    throws X extends Exception

Deprecated.

Closes this iteration, freeing any resources that it is holding. If the iteration has already been closed then invoking this method has no effect.

Specified by:

close in interface AutoCloseable

Throws:

X extends Exception