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.

Method Summary

Methods

Modifier and Type	Method and Description
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.