public void PersistTriples(string graphIri, HashSet <model.rdf.Triple> triplesToPersist)
{
_logger.LogTrace("Persisting triples into graph with IRI '{0}'. Triples: {1}", graphIri, triplesToPersist);
IGraph model = _rdf4jMapper.TriplesToGraph(triplesToPersist);
var tryMore = true;
model.BaseUri = new Uri(graphIri);
for (var i = 0; i < NUMBER_OF_ATTEMPTS && tryMore; i++)
{
try
{
if (_repository.HasGraph(model.BaseUri))
{
_stardogGraphConnector.UpdateGraph(model.BaseUri, model.Triples, null);
}
else
{
_stardogGraphConnector.SaveGraph(model);
}
tryMore = false;
}
catch (Exception ex)
{
_logger.LogError("Exception was thrown while adding a model to the repository.", ex);
}
}
_logger.LogTrace("Persisted {0} triples into the <{1}> graph.", triplesToPersist.Count, graphIri);
}
/// <summary>
/// Merges the graphs from IMDb, LastFM and Charts_de into a new database
/// </summary>
private static void MergeGraphs()
{
Log("Executing MergeGraphs()");
Log("Connecting to Movie store...");
var movieStore = new StardogConnector(settings.ServerIp, MoviesDbName, settings.Login, settings.Password);
movieStore.Timeout = int.MaxValue;
#region Tunefind
Log("Connecting to Tunefind store...");
var tuneFindStore = new StardogConnector(settings.ServerIp, TuneFindDbName, settings.Login, settings.Password);
var tuneFindGraph = new Graph();
tuneFindGraph.BaseUri = new Uri("http://imn.htwk-leipzig.de/pbachman/ontologies/tunefind#");
tuneFindStore.LoadGraph(tuneFindGraph, string.Empty);
Log("Uploading Graph...");
movieStore.DeleteGraph("http://imn.htwk-leipzig.de/pbachman/ontologies/tunefind#");
movieStore.SaveGraph(tuneFindGraph);
#endregion
#region IMDB
Log("Connecting to IMDB store...");
var imdbStore = new StardogConnector(settings.ServerIp, ImdbDbName, settings.Login, settings.Password);
var imdbGraph = new Graph();
imdbGraph.BaseUri = new Uri("http://imn.htwk-leipzig.de/pbachman/ontologies/imdb#");
imdbStore.LoadGraph(imdbGraph, string.Empty);
Log("Uploading Graph...");
movieStore.DeleteGraph("http://imn.htwk-leipzig.de/pbachman/ontologies/imdb#");
movieStore.SaveGraph(imdbGraph);
#endregion
#region LastFM
Log("Connecting to LastFm store...");
var lastFmStore = new StardogConnector(settings.ServerIp, LastFmDbName, settings.Login, settings.Password);
var lastFmGraph = new Graph();
lastFmGraph.BaseUri = new Uri("http://imn.htwk-leipzig.de/pbachman/ontologies/lastfm#");
lastFmStore.LoadGraph(lastFmGraph, string.Empty);
Log("Uploading Graph...");
movieStore.DeleteGraph("http://imn.htwk-leipzig.de/pbachman/ontologies/lastfm#");
movieStore.SaveGraph(lastFmGraph);
#endregion
#region Charts_de
Log("Connecting to Chart_De store...");
var chartsDeStore = new StardogConnector(settings.ServerIp, ChartsDeDbName, settings.Login, settings.Password);
var chartsDeGraph = new Graph();
chartsDeGraph.BaseUri = new Uri("http://imn.htwk-leipzig.de/pbachman/ontologies/charts_de#");
chartsDeStore.LoadGraph(chartsDeGraph, string.Empty);
Log("Uploading Graph...");
movieStore.DeleteGraph("http://imn.htwk-leipzig.de/pbachman/ontologies/charts_de#");
movieStore.SaveGraph(chartsDeGraph);
#endregion
Log("Merging Graphs...");
var movieGraph = SetupMovieGraph();
movieGraph.Merge(tuneFindGraph);
movieGraph.Merge(imdbGraph);
movieGraph.Merge(lastFmGraph);
movieGraph.Merge(chartsDeGraph);
Log("Writing Graph...");
var writer = new CompressingTurtleWriter(TurtleSyntax.W3C);
writer.Save(movieGraph, @"01_Movies.ttl");
}
