Class OrderIterator
java.lang.Object
org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<E>
org.eclipse.rdf4j.common.iteration.DelayedIteration<BindingSet>
org.eclipse.rdf4j.query.algebra.evaluation.iterator.OrderIterator
- All Implemented Interfaces:
AutoCloseable,Iterator<BindingSet>,CloseableIteration<BindingSet>
Sorts the input and optionally applies limit and distinct.
- Author:
- James Leigh, Arjohn Kampman
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Constructor Summary
ConstructorsConstructorDescriptionOrderIterator(CloseableIteration<BindingSet> iter, Comparator<BindingSet> comparator) OrderIterator(CloseableIteration<BindingSet> iter, Comparator<BindingSet> comparator, long limit, boolean distinct) OrderIterator(CloseableIteration<BindingSet> iter, Comparator<BindingSet> comparator, long limit, boolean distinct, long iterationSyncThreshold) -
Method Summary
Modifier and TypeMethodDescriptionprotected CloseableIteration<BindingSet>Creates the iteration that should be iterated over.protected voiddecrement(int amount) protected voidCloses this iteration as well as the underlying iteration if it has already been created and happens to be aCloseableIteration.protected voidvoidremove()Calls the remove method of the underlying iteration.Methods inherited from class org.eclipse.rdf4j.common.iteration.DelayedIteration
hasNext, nextMethods inherited from class org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration
close, isClosedMethods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface org.eclipse.rdf4j.common.iteration.CloseableIteration
streamMethods inherited from interface java.util.Iterator
forEachRemaining
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Constructor Details
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OrderIterator
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OrderIterator
public OrderIterator(CloseableIteration<BindingSet> iter, Comparator<BindingSet> comparator, long limit, boolean distinct) -
OrderIterator
public OrderIterator(CloseableIteration<BindingSet> iter, Comparator<BindingSet> comparator, long limit, boolean distinct, long iterationSyncThreshold)
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Method Details
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createIteration
Description copied from class:DelayedIterationCreates the iteration that should be iterated over. This method is called only once, when the iteration is first needed.- Specified by:
createIterationin classDelayedIteration<BindingSet>- Throws:
QueryEvaluationException
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increment
- Throws:
QueryEvaluationException
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decrement
- Throws:
QueryEvaluationException
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remove
Description copied from class:DelayedIterationCalls the remove method of the underlying iteration.- Specified by:
removein interfaceIterator<BindingSet>- Overrides:
removein classDelayedIteration<BindingSet>- Throws:
QueryEvaluationException
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handleClose
Description copied from class:DelayedIterationCloses this iteration as well as the underlying iteration if it has already been created and happens to be aCloseableIteration.- Overrides:
handleClosein classDelayedIteration<BindingSet>- Throws:
QueryEvaluationException
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