From: | "Joe Halpin" <jhalpin100(at)gmail(dot)com> |
---|---|
To: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | pgsql-interfaces(at)postgresql(dot)org |
Subject: | Re: Problem with trigger function in C |
Date: | 2008-10-28 20:12:59 |
Message-ID: | 4dc28b160810281312m7f9c7635sf60502bef468a77b@mail.gmail.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-interfaces |
Sorry I forgot to add that part. Here's how I did that:
sn=# create function xqueryTrigger() returns trigger as
'/usr/local/lib/postgresql/xqueryTrigger.so' language c;
CREATE FUNCTION
sn=# create trigger tbefore before insert or update on at_xparam
for each row execute procedure xquerytrigger();
CREATE TRIGGER
Is the function name case sensitive? I had originally named it
xqueryTrigger, but after some error messages which referenced
"xquerytrigger" I renamed it to be all lower case.
Thanks
Joe
On Tue, Oct 28, 2008 at 3:01 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> "Joe Halpin" <jhalpin100(at)gmail(dot)com> writes:
>> I'm new at this and I apologize if I got the wrong list, but I'm
>> trying to write a trigger function in C which is linked in with
>> libxqilla and is supposed to run an xquery against some xml we have
>> stored in a column. I find that when the function is entered fcinfo is
>> null, which causes a segfault.
>
> AFAIK the only way fcinfo would be null is if PG didn't think that the
> function was V1 call convention. I see that you do have the
> PG_FUNCTION_INFO_V1 macro in there, which eliminates the most obvious
> explanation. Are you sure that the SQL-level CREATE FUNCTION command
> references this function name and not some other one?
>
> regards, tom lane
>
From | Date | Subject | |
---|---|---|---|
Next Message | Tom Lane | 2008-10-28 21:01:22 | Re: Problem with trigger function in C |
Previous Message | Tom Lane | 2008-10-28 20:01:53 | Re: Problem with trigger function in C |