Обсуждение: jdbc and refcursor problem

Hello to all,
I need to process a cursor returned by a stored function,
reading the jdbc driver docs I learned how to do it but I got a strange behavior
using metadata.
For xample:

CallableStatement cstm = conn.prepareCall("{ ? = call myfunction() }");
cstm.registerOutParameter(1, Types.OTHER);
cstm.execute();

ResultSet rs = (ResultSet) cstm.getObject(1);
ResutlSetMetaData rsmd = rs.getMetaData();
int columns  = rsmd.getColumnCount() // <-- this throw a NullPointerException

I got a NullPointerException when try to retrieve the ResultSet column count
even if the ResultSet contains or not data. Is there a workaround?

Thanks,
Gaetano Sferra



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Gaetano,

Try posting this to the jdbc list

pgsql-jdbc@postgresql.org


Dave

Gaetano Sferra wrote:

>Hello to all,
>I need to process a cursor returned by a stored function,
>reading the jdbc driver docs I learned how to do it but I got a strange behavior
>using metadata.
>For xample:
>
>CallableStatement cstm = conn.prepareCall("{ ? = call myfunction() }");
>cstm.registerOutParameter(1, Types.OTHER);
>cstm.execute();
>
>ResultSet rs = (ResultSet) cstm.getObject(1);
>ResutlSetMetaData rsmd = rs.getMetaData();
>int columns  = rsmd.getColumnCount() // <-- this throw a NullPointerException
>
>I got a NullPointerException when try to retrieve the ResultSet column count
>even if the ResultSet contains or not data. Is there a workaround?
>
>Thanks,
>Gaetano Sferra
>
>
>
>____________________________________________________________
>Libero ADSL: 3 mesi gratis e navighi a 1.2 Mega, senza costi di attivazione.
>Abbonati subito su http://www.libero.it
>
>
>
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>
>  
>

-- 
Dave Cramer
http://www.postgresintl.com
519 939 0336
ICQ#14675561

Hi,

just a quetion. i read about pl/java about 3 months
ago so, will be pl/java in 8.0?

regards,
Jaime Casanova

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Información de Estados Unidos y América Latina, en Yahoo! Noticias.
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PL/JAVA and pl-j are both interfaces and will work with 8.0 but not be 
bundled in

for pl-j see  http://plj.codehaus.org/

Dave
Jaime Casanova wrote:

>Hi,
>
>just a quetion. i read about pl/java about 3 months
>ago so, will be pl/java in 8.0?
>
>regards,
>Jaime Casanova
>
>_________________________________________________________
>Do You Yahoo!?
>Información de Estados Unidos y América Latina, en Yahoo! Noticias.
>Visítanos en http://noticias.espanol.yahoo.com
>
>---------------------------(end of broadcast)---------------------------
>TIP 2: you can get off all lists at once with the unregister command
>    (send "unregister YourEmailAddressHere" to majordomo@postgresql.org)
>
>
>  
>

-- 
Dave Cramer
http://www.postgresintl.com
519 939 0336
ICQ#14675561