public IVertex ParentVertex(IVertex v) { if (v == null) { throw new ArgumentNullException("v"); } if (this.Wrapped.InDegree(v) > 1) { throw new MultipleInEdgeException(v.get_ID().ToString()); } return Traversal.FirstSourceVertex(this.Wrapped.InEdges(v)); }
private int FetchIndex(IVertex v) { for (int i = 0; i < base.List.Count; i++) { IList list = (IList) base.List[i]; if ((list.Count > 0) && (((IVertex) list[0]).get_ID() == v.get_ID())) { return i; } } return -1; }