Function AR_STARTNODE

src/arithmetic/entity_funcs/entity_funcs.c:102–115

returns the start node of a relationship. */

/* returns the start node of a relationship. */
SIValue AR_STARTNODE(SIValue *argv, int argc, void *private_data) {
	if(SI_TYPE(argv[0]) == T_NULL) return SI_NullVal();
	Edge *e = argv[0].ptrval;
	NodeID start_id = Edge_GetSrcNodeID(e);
	GraphContext *gc = QueryCtx_GetGraphCtx();
	Node *src = rm_malloc(sizeof(Node));
	*src = GE_NEW_NODE();
	// Retrieve the node from the graph.
	Graph_GetNode(gc->g, start_id, src);
	SIValue si_node = SI_Node(src);
	// Mark this value as a heap allocation so that it gets freed properly.
	SIValue_SetAllocationType(&si_node, M_SELF);
	return si_node;
}

/* returns the end node of a relationship. */
SIValue AR_ENDNODE(SIValue *argv, int argc, void *private_data) {