Class FilterIteration<E,X extends Exception>
java.lang.Object
org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<E,X>
org.eclipse.rdf4j.common.iteration.IterationWrapper<E,X>
org.eclipse.rdf4j.common.iteration.FilterIteration<E,X>
- All Implemented Interfaces:
AutoCloseable
,CloseableIteration<E,
,X> Iteration<E,
X>
- Direct Known Subclasses:
CompatibleBindingSetFilter
,DistinctIteration
,FilteringIteration
,FilterIterator
,IntersectIteration
,MinusIteration
,OffsetIteration
,ReducedIteration
,SPARQLMinusIteration
A CloseableIteration that wraps another Iteration, applying a filter on the objects that are returned. Subclasses
must implement the accept method to indicate which objects should be returned.
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Field Summary
Fields inherited from class org.eclipse.rdf4j.common.iteration.IterationWrapper
wrappedIter
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionprotected abstract boolean
Tests whether or not the specified object should be returned by this Iteration.protected void
Closes this Iteration and also closes the wrapped Iteration if it is aCloseableIteration
.boolean
hasNext()
Checks whether the wrapped Iteration contains more elements, closing this Iteration when this is not the case.next()
Returns the next element from the wrapped Iteration.Methods inherited from class org.eclipse.rdf4j.common.iteration.IterationWrapper
remove
Methods inherited from class org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration
close, isClosed
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Constructor Details
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FilterIteration
- Parameters:
iter
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Method Details
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hasNext
Description copied from class:IterationWrapper
Checks whether the wrapped Iteration contains more elements, closing this Iteration when this is not the case. -
next
Description copied from class:IterationWrapper
Returns the next element from the wrapped Iteration. -
accept
Tests whether or not the specified object should be returned by this Iteration. All objects from the wrapped Iteration pass through this method in the same order as they are coming from the wrapped Iteration.- Parameters:
object
- The object to be tested.- Returns:
- true if the object should be returned, false otherwise.
- Throws:
X
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handleClose
Description copied from class:IterationWrapper
Closes this Iteration and also closes the wrapped Iteration if it is aCloseableIteration
.- Overrides:
handleClose
in classIterationWrapper<E,
X extends Exception> - Throws:
X
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