internal void OnMonitoredGraphCleared(object sender, GraphEventArgs e)
{
SpinWrappedGraph g = (SpinWrappedGraph)GetModifiableGraph(e.Graph.BaseUri);
g.Clear();
Storage.DeleteGraph(g.BaseUri);
_ignoreMonitoredChangeEvents = false;
}
/// <summary>
/// Adds a graph in the dataset and submits it to SPIN processing.
/// If the graph already exists in the dataset, this will lead its replacement by the new graph.
/// </summary>
/// <param name="g"></param>
/// <returns></returns>
public bool AddGraph(IGraph g)
{
SpinWrappedGraph graph = (SpinWrappedGraph)GetModifiableGraph(g.BaseUri);
graph.Reset();
// Add graph handlers to monitor subsequent changes to the graph
g.Changed += OnMonitoredGraphChanged;
g.ClearRequested += OnMonitoredGraphClearRequested;
g.Cleared += OnMonitoredGraphCleared;
// Add the graph to the synchronized collection so remote updates are reflected locally on updates completion
_synchronizedGraphs.Add(g);
graph.Assert(g.Triples);
ExecuteUpdate();
return(true);
}
internal void OnMonitoredGraphChanged(object sender, GraphEventArgs e)
{
if (_ignoreMonitoredChangeEvents)
{
return;
}
Uri graphUri = e.Graph.BaseUri;
SpinWrappedGraph g = (SpinWrappedGraph)GetModifiableGraph(graphUri);
if (e.TripleEvent != null)
{
if (e.TripleEvent.WasAsserted)
{
g.Assert(e.TripleEvent.Triple);
}
else
{
g.Retract(e.TripleEvent.Triple);
}
}
}
