Обсуждение: Hello PL/Python
Today afternoon I a little study libpython1.5 and I mean create
new PL language is not a problem.
I a little play with it, and here is effect:
test=# CREATE FUNCTION py_test() RETURNS text AS '
test'# a = ''Hello '';
test'# b = ''PL/Python'';
test'# plpython.retval( a + b );
test'# ' LANGUAGE 'plpython';
CREATE
test=#
test=#
test=# SELECT py_test(); py_test
-----------------Hello PL/Python
(1 row)
Comments? Works on this already anyone?
Karel
PS. I'am not Python guru, I love 'C' and good shared libs only :-)
Karel Zak wrote: > > Today afternoon I a little study libpython1.5 and I mean create > new PL language is not a problem. > > I a little play with it, and here is effect: > > test=# CREATE FUNCTION py_test() RETURNS text AS ' > test'# a = ''Hello ''; > test'# b = ''PL/Python''; > test'# plpython.retval( a + b ); > test'# ' LANGUAGE 'plpython'; > CREATE > test=# > test=# > test=# SELECT py_test(); > py_test > ----------------- > Hello PL/Python > (1 row) > > Comments? Works on this already anyone? There is a semi-complete implementation (i.e. no trigger procedures) by Vello Kadarpik (vello@pyystel.ee). He is probably waiting for fmgr redesign or somesuch to complete before releasing it. --------- Hannu
> > Comments? Works on this already anyone?
>
> There is a semi-complete implementation (i.e. no trigger procedures)
> by Vello Kadarpik (vello@pyystel.ee).
Cool! Is anywhere available this implementation?
Thanks.
Karel
Hannu Krosing <hannu@tm.ee> writes:
> There is a semi-complete implementation (i.e. no trigger procedures)
> by Vello Kadarpik (vello@pyystel.ee).
> He is probably waiting for fmgr redesign or somesuch to complete before
> releasing it.
fmgr redesign is done as far as PL language handlers need be concerned.
I still have to turn the crank on converting individual old-style
functions to new-style (about half of the builtin functions are done
so far ... man, we have got a lot of them ...). But PL and trigger
handlers were done a couple months ago.
regards, tom lane
Tom Lane wrote: > Hannu Krosing <hannu@tm.ee> writes: > > There is a semi-complete implementation (i.e. no trigger procedures) > > by Vello Kadarpik (vello@pyystel.ee). > > > He is probably waiting for fmgr redesign or somesuch to complete before > > releasing it. > > fmgr redesign is done as far as PL language handlers need be concerned. > I still have to turn the crank on converting individual old-style > functions to new-style (about half of the builtin functions are done > so far ... man, we have got a lot of them ...). But PL and trigger > handlers were done a couple months ago. PL/pgSQL (what you did) and PL/Tcl (done lately) are converted to the new FMGR NULL-capabilities. Dunno about PL/Perl. Jan -- #======================================================================# # It's easier to get forgiveness for being wrong than for being right. # # Let's break this rule - forgive me. # #================================================== JanWieck@Yahoo.com #
Tom Lane wrote: > > Hannu Krosing <hannu@tm.ee> writes: > > There is a semi-complete implementation (i.e. no trigger procedures) > > by Vello Kadarpik (vello@pyystel.ee). > > > He is probably waiting for fmgr redesign or somesuch to complete before > > releasing it. > > fmgr redesign is done as far as PL language handlers need be concerned. > I still have to turn the crank on converting individual old-style > functions to new-style (about half of the builtin functions are done > so far ... man, we have got a lot of them ...). But PL and trigger > handlers were done a couple months ago. Is some documentation available or just the source ? Is the -fmgr mailing-list actually there ? I got some cryptic messages when I tried to subscribe a while ago. ---------- Hannu
Hannu Krosing <hannu@tm.ee> writes:
> Tom Lane wrote:
>> fmgr redesign is done as far as PL language handlers need be concerned.
> Is some documentation available or just the source ?
src/backend/utils/fmgr/README is all there is at the moment. Updating
the SGML docs is still on the to-do list.
> Is the -fmgr mailing-list actually there ?
Darn if I know. I'm not on it ...
regards, tom lane
On Fri, 21 Jul 2000, Tom Lane wrote: > Hannu Krosing <hannu@tm.ee> writes: > > Tom Lane wrote: > >> fmgr redesign is done as far as PL language handlers need be concerned. > > > Is some documentation available or just the source ? > > src/backend/utils/fmgr/README is all there is at the moment. Updating > the SGML docs is still on the to-do list. > > > Is the -fmgr mailing-list actually there ? > > Darn if I know. I'm not on it ... it is actually there ... the only one of the new ones that has been seeing any traffic, though, is the -oo one ...
> > handlers were done a couple months ago. > > PL/pgSQL (what you did) and PL/Tcl (done lately) are > converted to the new FMGR NULL-capabilities. > > Dunno about PL/Perl. I don't think anyone knows about PL/Perl. :-) (It is broken on many platforms.) -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
On Wed, 26 Jul 2000, Bruce Momjian wrote: > > > handlers were done a couple months ago. > > > > PL/pgSQL (what you did) and PL/Tcl (done lately) are > > converted to the new FMGR NULL-capabilities. > > > > Dunno about PL/Perl. > > I don't think anyone knows about PL/Perl. :-) (It is broken on many > platforms.) I believe that plperl failures are related to building perl as a shared library which isn't done in many platforms. PL/Perl by itself seems pretty darn stable to me. Now, when PL/Perl will have some sort of SPI interface...That'd rock ;) My idea was to implement SPI as a DBD driver, such as DBD::PgSPI, but I don't have time to implement it... -alex