/// <summary>Maps all triples from default graph to their respective graphs and adds a proper statement to RomanticWeb's meta graph.</summary>
/// <param name="tripleStore">The triple store.</param>
/// <param name="graphUri">The target graph URI.</param>
public static void MapToMetaGraph(this ITripleStore tripleStore, Uri graphUri)
{
if (tripleStore == null)
{
throw new ArgumentNullException("tripleStore");
}
if (graphUri == null)
{
throw new ArgumentNullException("graphUri");
}
var metaGraphUri = ConfigurationSectionHandler.Default.Factories[DescriptionConfigurationSection.Default.DefaultStoreFactoryName].MetaGraphUri;
var metaGraph = tripleStore.FindOrCreate(metaGraphUri);
var graph = tripleStore.FindOrCreate(graphUri);
var graphNode = metaGraph.CreateUriNode(graphUri);
var primaryTopicNode = metaGraph.CreateUriNode(PrimaryTopic);
foreach (var triple in graph.Triples)
{
var subject = (triple.Subject is IUriNode ? (IUriNode)triple.Subject : ((IBlankNode)triple.Subject).FindBlankNodeOwner(tripleStore));
if (subject == null)
{
continue;
}
metaGraph.Assert(new Triple(graphNode, primaryTopicNode, subject.CopyNode(metaGraph)));
}
}
