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## com.hp.hpl.jena.graph
Interface GraphStatisticsHandler

All Known Implementing Classes:
  MultiUnion.MultiUnionStatisticsHandler

    public interface GraphStatisticsHandler

A graph's StatisticsHandler offers access to some statistics about that graph's contents that might be useful for optimisation.

Author:
  kers

Method Summary
`long` | `getStatistic(Node S, Node P, Node O)` Answer a good estimate of the number of triples that would match the pattern `(S, P, O)`, or -1 if no good estimate is available.

Method Detail

### getStatistic

    long getStatistic(Node S,
                      Node P,
                      Node O)

  Answer a good estimate of the number of triples that would match the pattern `(S, P, O)`, or -1 if no good estimate is available. The estimate is good until the graph is updated.

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