Обсуждение: SPI_ERROR_CONNECT in plperl function

Hi list,
I have found the following problem: I have declared a domain datatype
with a check constraint. The check constraint uses a plpgsql function:

CREATE FUNCTION domain_ok(value integer) RETURNS boolean AS $$
BEGIN
    RETURN value > 0;
END;
$$ LANGUAGE plpgsql;

CREATE DOMAIN testdomain integer CHECK (domain_ok(value));

I then wrote a plperl function that returns a set of this domain type:

CREATE FUNCTION testfunc() RETURNS SETOF testdomain AS $$
return_next(42);
return undef;
$$ LANGUAGE plperl;

When I try to call the function I get the following error message:

test=# select * from testfunc();
ERROR:  error from Perl function: SPI_connect failed: SPI_ERROR_CONNECT
at line 2.

The problem goes away if I declare the testfunc to return an integer.
Even a domain with a "normal" check constraint (i.e. without one that
calls another function) does not cause this error.

Is this a known bug? Or do I miss something?

Regards,
    Christian

--
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Financial IT and Consulting         Fax:  +49 551 489500-91
Hans-Böckler-Straße 2                  http://www.deriva.de
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=?ISO-8859-1?Q?Christian_Schr=F6der?= <cs@deriva.de> writes:
> When I try to call the function I get the following error message:

> test=# select * from testfunc();
> ERROR:  error from Perl function: SPI_connect failed: SPI_ERROR_CONNECT
> at line 2.

Hmph ... looks like plperl is shy a few SPI_push/SPI_pop calls.
We fixed this issue in plpgsql awhile back, but nobody thought to
look at the other PLs :-(

            regards, tom lane

I wrote:
> =?ISO-8859-1?Q?Christian_Schr=F6der?= <cs@deriva.de> writes:
>> When I try to call the function I get the following error message:

>> test=# select * from testfunc();
>> ERROR:  error from Perl function: SPI_connect failed: SPI_ERROR_CONNECT
>> at line 2.

> Hmph ... looks like plperl is shy a few SPI_push/SPI_pop calls.

I've applied a patch for this --- it'll be in the next set of update
releases.

            regards, tom lane

Tom Lane wrote:
> Hmph ... looks like plperl is shy a few SPI_push/SPI_pop calls.
>
>
> I've applied a patch for this --- it'll be in the next set of update
> releases.
>
Great. Thanks a lot! The whole PostgreSQL stuff is really amazing! :-)

Regards,
    Christian

--
Deriva GmbH                         Tel.: +49 551 489500-42
Financial IT and Consulting         Fax:  +49 551 489500-91
Hans-Böckler-Straße 2                  http://www.deriva.de
D-37079 Göttingen

Deriva CA Certificate: http://www.deriva.de/deriva-ca.cer