Class OrderIterator

java.lang.Object

org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<BindingSet, QueryEvaluationException>

org.eclipse.rdf4j.common.iteration.DelayedIteration<BindingSet, QueryEvaluationException>

org.eclipse.rdf4j.query.algebra.evaluation.iterator.OrderIterator

All Implemented Interfaces:

AutoCloseable, CloseableIteration<BindingSet, QueryEvaluationException>, Iteration<BindingSet, QueryEvaluationException>

@Deprecated(since="4.1.0")
public class OrderIterator
extends DelayedIteration<BindingSet, QueryEvaluationException>

Deprecated.

Sorts the input and optionally applies limit and distinct.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	OrderIterator.SerializedQueue<E extends Serializable>	Deprecated.
private static class	OrderIterator.SortedIterators<E>	Deprecated.

Field Summary

Fields

Modifier and Type	Field	Description
private final Comparator<BindingSet>	comparator	Deprecated.
private final boolean	distinct	Deprecated.
private final CloseableIteration<BindingSet, QueryEvaluationException>	iter	Deprecated.
private final long	iterationSyncThreshold	Deprecated. Number of items cached before internal collection is synced to disk.
private final long	limit	Deprecated.
private final List<OrderIterator.SerializedQueue<BindingSet>>	serialized	Deprecated.

Constructor Summary

Constructors

Constructor	Description
OrderIterator(CloseableIteration<BindingSet, QueryEvaluationException> iter, Comparator<BindingSet> comparator)	Deprecated.
OrderIterator(CloseableIteration<BindingSet, QueryEvaluationException> iter, Comparator<BindingSet> comparator, long limit, boolean distinct)	Deprecated.
OrderIterator(CloseableIteration<BindingSet, QueryEvaluationException> iter, Comparator<BindingSet> comparator, long limit, boolean distinct, long iterationSyncThreshold)	Deprecated.

Method Summary

Modifier and Type	Method	Description
protected Iteration<BindingSet, QueryEvaluationException>	createIteration()	Deprecated. Creates the iteration that should be iterated over.
protected void	decrement(int amount)	Deprecated.
protected void	handleClose()	Deprecated. Closes this iteration as well as the underlying iteration if it has already been created and happens to be a CloseableIteration.
protected void	increment()	Deprecated.
void	remove()	Deprecated. Calls the remove method of the underlying iteration.
private Stream<BindingSet>	sort(Collection<BindingSet> collection)	Deprecated.

Methods inherited from class DelayedIteration

hasNext, next

Methods inherited from class AbstractCloseableIteration

close, isClosed

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface CloseableIteration

stream

Field Details

iter

private final CloseableIteration<BindingSet, QueryEvaluationException> iter

Deprecated.

comparator

private final Comparator<BindingSet> comparator

Deprecated.

limit

private final long limit

Deprecated.

distinct

private final boolean distinct

Deprecated.

serialized

private final List<OrderIterator.SerializedQueue<BindingSet>> serialized

Deprecated.

iterationSyncThreshold

private final long iterationSyncThreshold

Deprecated.

Number of items cached before internal collection is synced to disk. If set to 0, no disk-syncing is done and all internal caching is kept in memory.

Constructor Details

OrderIterator

public OrderIterator(CloseableIteration<BindingSet, QueryEvaluationException> iter,
 Comparator<BindingSet> comparator)

Deprecated.

OrderIterator

public OrderIterator(CloseableIteration<BindingSet, QueryEvaluationException> iter,
 Comparator<BindingSet> comparator,
 long limit,
 boolean distinct)

Deprecated.

OrderIterator

public OrderIterator(CloseableIteration<BindingSet, QueryEvaluationException> iter,
 Comparator<BindingSet> comparator,
 long limit,
 boolean distinct,
 long iterationSyncThreshold)

Deprecated.

Method Details

createIteration

protected Iteration<BindingSet, QueryEvaluationException> createIteration()
                                                                   throws QueryEvaluationException

Deprecated.

Description copied from class: DelayedIteration

Creates the iteration that should be iterated over. This method is called only once, when the iteration is first needed.

Specified by:

createIteration in class DelayedIteration<BindingSet, QueryEvaluationException>

Throws:

QueryEvaluationException

increment

protected void increment()
                  throws QueryEvaluationException

Deprecated.

Throws:

QueryEvaluationException

decrement

protected void decrement(int amount)
                  throws QueryEvaluationException

Deprecated.

Throws:

QueryEvaluationException

sort

private Stream<BindingSet> sort(Collection<BindingSet> collection)

Deprecated.

remove

public void remove()
            throws QueryEvaluationException

Deprecated.

Description copied from class: DelayedIteration

Calls the remove method of the underlying iteration.

Specified by:

remove in interface Iteration<BindingSet, QueryEvaluationException>

Overrides:

remove in class DelayedIteration<BindingSet, QueryEvaluationException>

Throws:

QueryEvaluationException

handleClose

protected void handleClose()
                    throws QueryEvaluationException

Deprecated.

Description copied from class: DelayedIteration

Closes this iteration as well as the underlying iteration if it has already been created and happens to be a CloseableIteration.

Overrides:

handleClose in class DelayedIteration<BindingSet, QueryEvaluationException>

Throws:

QueryEvaluationException