Re: first() causes NullPointerException
От | Nico |
---|---|
Тема | Re: first() causes NullPointerException |
Дата | |
Msg-id | cqe8ru$1v5f$1@news.hub.org обсуждение исходный текст |
Ответ на | first() causes NullPointerException ("Nico" <nicohmail-postgresql@yahoo.com>) |
Список | pgsql-jdbc |
Thanks. I will try it right away. Nico. "Kris Jurka" <books@ejurka.com> schreef in bericht news:Pine.BSO.4.56.0412230526470.22886@leary.csoft.net... > > > On Thu, 23 Dec 2004, Nico wrote: > >> I have a servlet that extracts data from a postgresql database and makes >> a >> nice menu of it. The connection works fine, I can execute my >> sql-statement >> without any problems, but when I try the first() method of ResultSet it >> fails: it throws a NullPointerException at line 216. >> >> resultsetL1=getQuery("SELECT * FROM \"qryMenuL1\" ORDER BY "+ >> "\"MenuL1Order\""); >> resultsetL1C=getQuery("SELECT COUNT(\"MenuL1ID\") FROM >> \"qryMenuL1\""); > > According to the JDBC spec you are only allowed to have one ResultSet open > per Statement. When you create the second ResultSet the first is > automatically closed. This causes the NPE or in the CVS version of the > driver an error message indicating that the result is already closed. > > Kris Jurka > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Don't 'kill -9' the postmaster >
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