public Resource Persist(Resource r)
{
if (!(r is BNode) || !sparql.AllowPersistBNodes)
{
return(r);
}
if (!(source is SupportsPersistableBNodes))
{
return(r);
}
SupportsPersistableBNodes spb = (SupportsPersistableBNodes)source;
string guid = spb.GetStoreGuid();
if (guid == null)
{
return(r);
}
string id = spb.GetNodeId((BNode)r);
if (id == null)
{
return(r);
}
return(new Entity(Sparql.BNodePersistUri + guid + ":" + id));
}
public Resource Depersist(Resource r)
{
if (r.Uri == null || !sparql.AllowPersistBNodes)
{
return(r);
}
if (!(source is SupportsPersistableBNodes))
{
return(r);
}
if (!r.Uri.StartsWith(Sparql.BNodePersistUri))
{
return(r);
}
SupportsPersistableBNodes spb = (SupportsPersistableBNodes)source;
string uri = r.Uri;
string guid = uri.Substring(Sparql.BNodePersistUri.Length);
int c = guid.IndexOf(':');
if (c > 0)
{
string id = guid.Substring(c + 1);
guid = guid.Substring(0, c);
if (spb.GetStoreGuid() != null && guid == spb.GetStoreGuid())
{
BNode node = spb.GetNodeFromId(id);
if (node != null)
{
return(node);
}
}
}
return(r);
}