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Re: a common place for pl/perlu modules

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: Alexey Klyukin <alexk(at)commandprompt(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: a common place for pl/perlu modules
Date: 2010-02-11 17:07:46
Message-ID: 4B743962.5080203@dunslane.net (view raw or flat)
Thread:
Lists: pgsql-hackers

Alexey Klyukin wrote:
> On Feb 11, 2010, at 6:24 PM, Andrew Dunstan wrote:
>
>   
>> Alexey Klyukin wrote:
>>     
>>> Hello,
>>>
>>> When developing pl/perlu functions common definitions and methods are often stored in external .pm modules. During deployment the modules should be installed somewhere in @INC to be reachable by the perl interpreter. However, installing the modules to a location outside of the PG installation makes it hard to have a consistent environment when running multiple PG versions on the same host. What do you think about defining a canonical place for pl/perlu .pm modules (i.e. PKGLIBDIR) and adding this location to @INC during the interpreter initialization ? Another idea is to allow a user to specify such location by adding a new custom GUC variable.
>>>
>>>
>>>  
>>>       
>> Why won't setting this in the new on_perl_init setting work? It's even included in to documented examples using the standard lib module: <http://developer.postgresql.org/pgdocs/postgres/plperl-under-the-hood.html#PLPERL-CONFIG>
>>     
>
> The lack of support for SPI functions makes this hardly an adequate solution. I do have both modules and SPI calls in several pl/perlu functions.
>
>   


That has nothing to do with what you asked about, namely setting the 
include path. You can set the include path in on_perl_init with "use 
lib" and then "use" your modules in your plperlu functions, at which 
point SPI will be available.

cheers

andrew



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