Function Graph_CreateEdge

src/graph/graph.c:826–855

}

void Graph_CreateEdge
(
	Graph *g,
	NodeID src,
	NodeID dest,
	RelationID r,
	Edge *e
) {
	ASSERT(g != NULL);
	ASSERT(r < Graph_RelationTypeCount(g));

#ifdef RG_DEBUG
	// make sure both src and destination nodes exists
	Node node = GE_NEW_NODE();
	ASSERT(Graph_GetNode(g, src, &node)  == true);
	ASSERT(Graph_GetNode(g, dest, &node) == true);
#endif

	EdgeID id;
	AttributeSet *set = DataBlock_AllocateItem(g->edges, &id);
	*set = NULL;

	e->id         = id;
	e->src_id     = src;
	e->dest_id    = dest;
	e->attributes = set;
	e->relationID = r;

	Graph_FormConnection(g, src, dest, id, r);
}

// retrieves all either incoming or outgoing edges
// to/from given node N, depending on given direction