Обсуждение: JDBC Prepared Statement Bug

I am trying to use a Prepared Statement that has a character type. The
value I am trying to use is  '\0' and it is getting set with the
setObject method. It looks like this is just getting converted to a
string which the backend is taking as an end of command so the insert
fails. I think for the chaacter type we need to check for this case and
convert it to a string of "\0". I am using 7.2 and the JDBC driver that
comes with it.

Dave <dave@candata.com> writes:

> I am trying to use a Prepared Statement that has a character type. The
> value I am trying to use is  '\0' and it is getting set with the
> setObject method.

'\0' is not a legal value for character types.  You'll need to use the
BYTEA type instead and quote it properly.

-Doug
--
Doug McNaught       Wireboard Industries      http://www.wireboard.com/

      Custom software development, systems and network consulting.
      Java PostgreSQL Enhydra Python Zope Perl Apache Linux BSD...

Dave Smith <dave.smith@candata.com> writes:

> Well it is actually coded as '\u0000' which is valid value for a
> character type. The 'C' backend takes this as '\0' and and end of line
> terminator.

Hmmm, I don't know all the ins and outs of the i18n stuff, but you
should probably be storing strings as UTF-8 if you expect PG to handle
them as character data.  The String.getBytes(String enc) call should
do it.

-Doug
--
Doug McNaught       Wireboard Industries      http://www.wireboard.com/

      Custom software development, systems and network consulting.
      Java PostgreSQL Enhydra Python Zope Perl Apache Linux BSD...

Well it is actually coded as '\u0000' which is valid value for a
character type. The 'C' backend takes this as '\0' and and end of line
terminator.

Doug McNaught wrote:
> Dave <dave@candata.com> writes:
>
>
>>I am trying to use a Prepared Statement that has a character type. The
>>value I am trying to use is  '\0' and it is getting set with the
>>setObject method.
>
>
> '\0' is not a legal value for character types.  You'll need to use the
> BYTEA type instead and quote it properly.
>
> -Doug