/// <summary>
/// (re)loads file data; existing graph data is overwritten.
/// </summary>
/// <returns>
/// Self graph for loaded data.
/// </returns>
public async Task <Graph> Load(Node <FileInfo> file)
{
var id = _rdf.Uri(file.Value.AsUri());
var g = _rdf.GetSelfGraph(id);
g.Clear();
await new NTripleFile(file.Value)
.Read(g);
_rdf.GetSelfGraph(_rdf.System)
.Update
.For(id).With(BackingFile)
.Set(file);
return(g);
}
private Task DelayedDataRead(FileInfo srcFile, IRdfData rdf, int id)
{
return(new Task(() =>
{
var g = rdf.GetSelfGraph(rdf.BlankSelf($"g{id}"));
using var rd = srcFile.OpenText();
NTripleFile.Read(g, rd).Wait();
}, TaskCreationOptions.LongRunning));
}
/// <summary>Convert graph to a self-only graph</summary> public Graph SelfOnly() => _rdf.GetSelfGraph(Id);