OrientDB ETL with self joined mysql table -

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i'm trying (new orientdb) load old fashioned self joined mysql table orientdb. i'm kinda stuck, want create vertices , edges etl edges created empty vertices. spent many hours in documentation can't find missing.

here oetl json file :

{   "config": {     "log": "debug"   },   "extractor" : {     "jdbc": { "driver": "com.mysql.jdbc.driver",       "url": "***",       "username": "***",       "userpassword": "***",       "query": "select nid, pnid, label prod_arbo limit 500" }   },   "transformers" : [     { "vertex": { "class": "noeud", "skipduplicates": true} },     { "field": { "fieldname": "titre", "expression": "label"}},     { "field": { "fieldname": "titre", "operation": "remove"} },     { "field": { "fieldname": "pnid", "operation": "remove"} },     { "edge": {       "class": "parent",       "joinfieldname": "pnid",       "lookup": "noeud.nid",       "unresolvedlinkaction": "create"     } }   ],   "loader" : {     "orientdb": {       "dburl": "***",       "dbuser": "***",       "dbpassword": "***",       "standardelementconstraints": false,       "tx": false,       "wal": false,       "dbtype": "graph"     }   } }

mysql db :

nid -> autoincrement unique id label -> need put in field "titre" pnid -> parent self join

i logs :

[43:edge] debug transformer input: v(noeud)[#13:57377] [43:edge] debug joincurrentvalue=null, lookupresult=null [43:edge] debug created new vertex=noeud#13:57378{nid:null} v36 [43:edge] debug created new edge=e[#17:56380][#13:57377-parent->#13:57378] [43:edge] debug transformer output: v(noeud)[#13:57377]

and don't understand why nid null on new created vertex while created edge, how can make use pnid field here ?

many laurent


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