Package org.apache.jena.reasoner

Interface Finder

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.

  • Method Details

    • 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

    • 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 data
      continuation - 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.

    • contains

      boolean contains(TriplePattern pattern)
      Return true if the given pattern occurs somewhere in the find sequence.