Thanks! That's help.
When I compile functions in the same library they work fine. But if I put one to another shared library function execution failed with error:
can't load library "/usr/lib/pgsql/calculateAccount.so": /usr/lib/pgsql/calculateAccount.so: undefined symbol: calculateAccountService
Details:
------------------------------------------------------
File calculateAccount.c is compiled to calculateAccount.so:
Datum calculateAccount(PG_FUNCTION_ARGS)
{
...
DirectFunctionCall3(calculateAccountService, accountId, atoi(SPI_getvalue(tuple, tupdesc, 1)), startDate);
PG_RETURN_NULL();
}
-----------------------------------------------------
File calculateAccountService.c is compiled to calculateAccountService.so:
Datum calculateAccountService(PG_FUNCTION_ARGS)
{
...
PG_RETURN_VOID();
}
------------------------------------------
Define the functions to PostgreSQL
CREATE OR REPLACE FUNCTION calculateAccountService(integer, smallint, date)
RETURNS void AS
'calculateAccountService.so', 'calculateAccountService'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION calculateAccount(integer, date, date)
RETURNS void AS
'calculateAccount.so', 'calculateAccount'
LANGUAGE C STRICT;
----------------------------------------
Try to execute:
SELECT calculateAccount(2, '2008-02-23', '2009-04-13');
And receive Error message:
can't load library "/usr/lib/pgsql/calculateAccount.so": /usr/lib/pgsql/calculateAccount.so: undefined symbol: calculateAccountService
Thanks in advance,
Ilya Urikh.
On Thu, May 14, 2009 at 10:44 AM, Tom Lane
<tgl@sss.pgh.pa.us> wrote:
Ilya Urikh <
ilya.urikh@gmail.com> writes:
> What is the best way to call C-Language function from another one?
regards, tom lane
--
Best regards,
Ilya Urikh.