Re: Prepare Statement

Nope, it will get same error msg:
Myfunction(text) does net exist


Jie Liang

-----Original Message-----
From: Oliver Jowett [mailto:oliver@opencloud.com]
Sent: Friday, June 18, 2004 4:07 PM
To: Jie Liang
Cc: Kris Jurka; pgsql-jdbc@postgresql.org
Subject: Re: [JDBC] Prepare Statement


Jie Liang wrote:
> So, I think that PreparedStatement should have a way at least case a
> String to an Array or a way to create a Array, because of
> conn.prepareStatement("SELECT myfunction('{1,2,3}')") is NOT very
> useful.

One way that might work in the current driver is to use PGobject, which
lets you specify the underlying typename to use:

   stmt = conn.preparedStatement("SELECT myfunction(?)");
   org.postgresql.util.PGobject obj = new PGobject();
   obj.setValue("'{1,2,3}'");
   obj.setType("int[]");
   stmt.setObject(1, obj);

Untested, but in theory this should work even with
setUseServerPrepare(true) in effect.

Also, if you search the archives, quite some time ago (a year?) I posted

a patch that implemented setArray() better, so that you could pass your
own Array implementation to it and have things work correctly. It's out
of date, but might give you a starting point.

-O