Re: Problem with trigger function in C
"Joe Halpin" <[email protected]> Tue, 28 Oct 2008 15:12:59 -0500
| Newsgroups | gmane.comp.db.postgresql.interfaces |
|---|---|
| Message-ID | <[email protected]> |
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 <[email protected]> wrote: > "Joe Halpin" <[email protected]> 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 > -- Sent via pgsql-interfaces mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-interfaces