internal static IResource CreateUpdateControlledGraph(this SpinWrappedDataset queryModel, IResource graphNode, INode mode = null)
{
IGraph currentDataset = queryModel.CreateUpdateControlledDataset();
if (RDFUtil.sameTerm(graphNode, queryModel._datasetNode))
{
return(graphNode);
}
INode updatedGraph = null;
if (currentDataset.ContainsTriple(new Triple(graphNode, RDF.PropertyType, RDFRuntime.ClassReadOnlyGraph)))
{
throw new SpinException("The graph " + graphNode.Uri().ToString() + " is marked as Readonly for the current dataset");
}
if (!currentDataset.ContainsTriple(new Triple(graphNode.getSource(), RDF.PropertyType, SD.ClassGraph)))
{
currentDataset.Assert(graphNode.getSource(), Tools.CopyNode(RDF.PropertyType, currentDataset), Tools.CopyNode(SD.ClassGraph, currentDataset));
currentDataset.Assert(graphNode.getSource(), Tools.CopyNode(RDFRuntime.PropertyUpdatesGraph, currentDataset), Tools.CopyNode(graphNode.getSource(), currentDataset));
}
updatedGraph = queryModel.GetUpdateControlledGraph(graphNode);
if (updatedGraph == null)
{
if (mode == null)
{
mode = RDFRuntime.PropertyUpdatesGraph;
}
currentDataset.Retract(currentDataset.GetTriplesWithObject(graphNode.getSource()).ToList());
updatedGraph = currentDataset.CreateUriNode(UriFactory.Create(RDFRuntime.GRAPH_NS_URI + Guid.NewGuid().ToString()));
currentDataset.Assert(updatedGraph, Tools.CopyNode(RDF.PropertyType, currentDataset), Tools.CopyNode(RDFRuntime.ClassUpdateControlGraph, currentDataset));
currentDataset.Assert(updatedGraph, Tools.CopyNode(mode, currentDataset), Tools.CopyNode(graphNode.getSource(), currentDataset));
// addition to simplify additional graph mapping constraints patterns
currentDataset.Assert(updatedGraph, Tools.CopyNode(RDFRuntime.PropertyUpdatesGraph, currentDataset), updatedGraph);
}
else if (!RDFUtil.sameTerm(graphNode, updatedGraph))
{
updatedGraph = ((IResource)updatedGraph).getSource();
currentDataset.Retract(graphNode.getSource(), Tools.CopyNode(RDFRuntime.PropertyUpdatesGraph, currentDataset), Tools.CopyNode(graphNode.getSource(), currentDataset));
currentDataset.Assert(updatedGraph, Tools.CopyNode(mode, currentDataset), Tools.CopyNode(graphNode.getSource(), currentDataset));
}
return(Resource.Get(updatedGraph, queryModel.spinProcessor));
}
public IEnumerable <IResource> getObjects(INode property)
{
return(_model.GetTriplesWithSubjectPredicate(this, property).Select(t => Resource.Get(t.Object, _model)));
}
internal static IResource CreateUpdateControlledGraph(this SpinWrappedDataset queryModel, Uri graphUri, INode mode = null)
{
return(queryModel.CreateUpdateControlledGraph(Resource.Get(RDFUtil.CreateUriNode(graphUri), queryModel.spinProcessor), mode));
}
