Re: Bug: Driver(8.2dev-500.jdbc3) does not handle boolean->BIT correctly

From: Dave Cramer <pg(at)fastcrypt(dot)com>
To: j(dot)random(dot)programmer <javadesigner(at)yahoo(dot)com>
Cc: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: Bug: Driver(8.2dev-500.jdbc3) does not handle boolean->BIT correctly
Date: 2005-12-19 20:55:35
Message-ID: 81D78292-95EC-44DD-B4CE-D9708D42F21B@fastcrypt.com
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The problem is that we don't know in advance if the underlying column
is a bit, or a boolean. Postgresql supports both, the jdbc API
doesn't appear to.

We are now using bound variables and are binding that to a boolean
type, not a bit type. We had to choose one of them, and boolean seems
to be much more "boolean" than bit.

Dave
On 19-Dec-05, at 3:14 PM, j.random.programmer wrote:

> Running against postgres 8.1
>
> I have:
>
> create table foo (bit_val bit);
>
> If I now try to insert, via the driver's prepared
> statement, a value of java boolean true into
> the bit_val column, I get:
>
> ---------------------------------
> ERROR COULD NOT SAVE.....
> org.postgresql.util.PSQLException: ERROR: column
> "bit_val" is of type bit but expression is of type
> boolean
> ---------------------------------
>
> This is totally wrong if my reading of the JDBC
> spec is correct. Java boolean values should
> be converted to bitval(1), possibly as '1' and
> then converted back to boolean when read from
> the database.
>
> If I go to psql directly, the following works fine:
>
> insert into foo (bit_val) values ('1');
>
> THAT is what the driver should to as well.
>
> This is really hokey since it's breaking my
> O/R mapping tool.
>
> Best regards,
> --j
>
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