public bool retainAll(java.util.Collection c)
{
JavaIteratorWrapper<dotSesame.Statement> stmtIter = new JavaIteratorWrapper<org.openrdf.model.Statement>(c.iterator());
HashSet<Triple> retained = new HashSet<Triple>();
bool changed = false;
foreach (dotSesame.Statement stmt in stmtIter)
{
retained.Add(SesameConverter.FromSesame(stmt, this._mapping));
}
foreach (Triple t in this._g.Triples.ToList())
{
if (!retained.Contains(t))
{
changed = true;
this._g.Retract(t);
}
}
return changed;
}
