| 1 | drop procedure if exists k_neurons; |
| 2 | drop function if exists k_get_node_weigth; |
| 3 | delimiter // |
| 4 | create function k_get_node_weigth (node INT, user INT) returns DOUBLE |
| 5 | BEGIN |
| 6 | declare node2,len,n_owner,offset int; |
| 7 | declare final,n_weight,o_weight,s_weight double; |
| 8 | declare vector varchar(240); |
| 9 | |
| 10 | select node_vector into vector from nodes where node_id = node; |
| 11 | set final = 1; |
| 12 | /* select k from nodes into final where node_id = node;*/ |
| 13 | |
| 14 | set len = length(vector); |
| 15 | set offset = 1; |
| 16 | WHILE offset < len DO |
| 17 | /* XXX node length is hardcoded */ |
| 18 | set node2 = substring(vector,offset,8); |
| 19 | set offset = offset + 8; |
| 20 | /* weigths from user to: |
| 21 | - all nodes from node to root node |
| 22 | - all node owners from node to root node |
| 23 | - all nodes between themselves (safe?) |
| 24 | */ |
| 25 | select node_weight,node_creator into n_weight,n_owner from nodes where node_id=node2; |
| 26 | select synapse_weight into s_weight from neurons where src=user and dst=node2; |
| 27 | select synapse_weight into o_weight from neurons where src=user and dst=n_owner; |
| 28 | |
| 29 | if o_weight = NULL or o_weight=0 then set o_weight=1; end if; |
| 30 | if s_weight = NULL or s_weight=0 then set s_weight=1; end if; |
| 31 | if n_weight = NULL or n_weight=0 then set n_weight=1; end if; |
| 32 | |
| 33 | set final = final * s_weight * o_weight * n_weight; |
| 34 | END WHILE; |
| 35 | RETURN final; |
| 36 | END// |
| 37 | create procedure k_neurons ( IN user_id INT, IN day_int INT) |
| 38 | BEGIN |
| 39 | if day_int = NULL or day_int = 0 then set day_int=20; end if; |
| 40 | select k,node_id,node_name,(k_get_node_weigth(node_id,user_id)*k) as weight_k from nodes where k>0 |
| 41 | and node_created>now()-interval day_int day order by weight_k desc; |
| 42 | |
| 43 | END// |
| 44 | delimiter ; |