Thanks for both your responses. Sure I know I can save null values with custom queries. In fact, my code is already adapted to invoke framework's method (eg : update/save/find), so I don't use custom query (and prefer don't use it).
When I initialize my database, Integer/Long column contains NULL values. I retrieve object with getById(long id) method (that invoke unmap method) and it's there that the field with null value return 0 instead. So I can't distinguish a field that really have "0" value. (Some of my fields doesn't need the 0 value but others need). Shai : I've already thinking of using String but it requires that I modify all my code (that's pretty huge). Moreover, I will have to implement special interface to treat such kind of field. -- You received this message because you are subscribed to the Google Groups "CodenameOne Discussions" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/codenameone-discussions. To view this discussion on the web visit https://groups.google.com/d/msgid/codenameone-discussions/9aa5664b-1d7d-497c-8ba9-c786cbfd0a3e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
