/// <summary>
/// Adds a graph portion to the repository
/// </summary>
public void Insert(LabelledTreeNode <object, Term> graph)
{
var body = SparqlBgpWriter.ConvertQueryModelToSparql(graph);
var query = $"INSERT DATA {{{body}}}";
Client.ExecuteQuery(query, DefaultSource.EndPoint);
}
/// <summary>
/// Evaluates a graph query model against a graph source
/// </summary>
/// <param name="queryModel">tree model of the query</param>
/// <param name="offset">number of solutions to skip</param>
/// <param name="limit">maximum number of solutions to take</param>
/// <param name="filter">a bgp filter</param>
/// <param name="source">query target</param>
/// <returns>A collection of trees</returns>
public IEnumerable <LabelledTreeNode <object, Term> > Evaluate(LabelledTreeNode <object, Term> queryModel, int?offset, int?limit, IFilter filter, IGraphSource source)
{
var queryString = SparqlBgpWriter.Write(queryModel, offset, limit, filter);
var client = new SparqlJsonClient();
var responseModel = client.ExecuteQuery(queryString, source.EndPoint);
foreach (var solution in responseModel.Results.Bindings)
{
yield return(CreateResultGraph(solution, queryModel));
}
}
