Re: What do people use for connection pooling with PostgreSQL JDBC

On Tue, 2009-04-07 at 06:24 -0400, Dave Cramer wrote:
>
>
> On Tue, Apr 7, 2009 at 4:35 AM, Hannu Krosing <hannu(at)2ndquadrant(dot)com>
> wrote:
> On Mon, 2009-04-06 at 07:43 -0400, Dave Cramer wrote:
> > huh ? What makes you think it doesn't deal with arrays ?
>
>
> I have a sample function, whit takes an array argument
>
> CREATE OR REPLACE FUNCTION arraySum(
> multiplier bigint,
> valuelist bigint[],
> OUT result int
> ) AS
> $$
> BEGIN
> result = 0;
> FOR idx IN array_lower(valuelist,
> 1)..array_upper(valuelist, 1) LOOP
> result = result + multiplier * valuelist[idx];
> END LOOP;
> RETURN;
> END;
> $$ LANGUAGE plpgsql SECURITY DEFINER;
>
>
> When I call this function directly via JDBC or using proxool I
> get a
> result, when doing it via c3p0 or dbcp I get an exception -
>
> Long[] array = { 1L, 2L };
> PreparedStatement ps = conn.prepareStatement(
> "SELECT * FROM arraySum(?, ?)");
> ps.setLong(1, 3L);
> ps.setArray(2, conn.createArrayOf("bigint", array));
> ps.execute();
>
> OK, createArrayOf is a relatively new method. So .... you have a few
> ways around this.
>
> 1) don't use it, create your own arrays.
> 2) fix the dbcp code
> 3) complain to dbcp people

It's both dbcp and c3po.

I understand that dbcp and c3po work on some other databases jdbc
drivers, so maybe I could also do

4) fix jdbc code to provide required createArrayOf support

no ?

>
--
Hannu Krosing http://www.2ndQuadrant.com
PostgreSQL Scalability and Availability
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