org.apache.clerezza.sparql

Interface QueryEngine

public interface QueryEngine

A QueryEngine can process SPARQL queries against an arbitrary set of graphs.

Author:

rbn

Method Summary

Modifier and Type	Method and Description
Object	execute(GraphStore graphStore, Graph defaultGraph, String query) Executes any sparql query.

Method Detail

execute

Object execute(GraphStore graphStore,
               Graph defaultGraph,
               String query)

Executes any sparql query. The type of the result object will vary depending on the type of the query.

Parameters:

graphStore - where the query originates.

defaultGraph - the default ImmutableGraph against which to execute the query if no FROM clause is present

query - string to be executed.

Returns:

the resulting ResultSet, ImmutableGraph or Boolean value