Package org.apache.jena.reasoner
Interface Finder
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- All Known Implementing Classes:
FGraph
,TransitiveGraphCache
public interface Finder
Minimal interface for preforming simple pattern find operations. Should be implemented by reasoners, caches and related datastructures.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description boolean
contains(TriplePattern pattern)
Return true if the given pattern occurs somewhere in the find sequence.ExtendedIterator<Triple>
find(TriplePattern pattern)
Basic pattern lookup interface.ExtendedIterator<Triple>
findWithContinuation(TriplePattern pattern, Finder continuation)
Extended find interface used in situations where the implementator may or may not be able to answer the complete query.
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Method Detail
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find
ExtendedIterator<Triple> find(TriplePattern pattern)
Basic pattern lookup interface.- Parameters:
pattern
- a TriplePattern to be matched against the data- Returns:
- a ClosableIterator over all Triples in the data set that match the pattern
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findWithContinuation
ExtendedIterator<Triple> findWithContinuation(TriplePattern pattern, Finder continuation)
Extended find interface used in situations where the implementator may or may not be able to answer the complete query. It will attempt to answer the pattern but if its answers are not known to be complete then it will also pass the request on to the nested Finder to append more results.- Parameters:
pattern
- a TriplePattern to be matched against the datacontinuation
- either a Finder or a normal Graph which will be asked for additional match results if the implementor may not have completely satisfied the query.
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contains
boolean contains(TriplePattern pattern)
Return true if the given pattern occurs somewhere in the find sequence.
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