Re: Does a call to a language handler provide a context/session, and somewhere to keep session data?
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| Тема | Re: Does a call to a language handler provide a context/session, and somewhere to keep session data? |
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| Msg-id | 002401d17854$969ea3a0$c3dbeae0$@andl.org обсуждение исходный текст |
| Ответ на | Re: Does a call to a language handler provide a context/session, and somewhere to keep session data? ("David G. Johnston" <david.g.johnston@gmail.com>) |
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Re: Does a call to a language handler provide a
context/session, and somewhere to keep session data?
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| Список | pgsql-general |
Thank you for your response.
Yes, I was aware of GD and SD. My question is about what facilities Postgres provides for implementing such a thing. Where is the proper place for the root of the SD/GD? What does an implementation use to determine that two calls belong to the same session?
I’m not finding that easy to understand by reading source code.
Regards
David M Bennett FACS
MD Powerflex Corporation, creators of PFXplus
To contact us, please call +61-3-9548-9114 or go to www.pfxcorp.com/contact.htm
From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] On Behalf Of David G. Johnston
Sent: Monday, 7 March 2016 4:28 PM
To: david@andl.org
Cc: pgsql-general-owner+M220479=david=andl.org@postgresql.org; pgsql-general <pgsql-general@postgresql.org>
Subject: Re: [GENERAL] Does a call to a language handler provide a context/session, and somewhere to keep session data?
On Sun, Mar 6, 2016 at 10:21 PM, <david@andl.org> wrote:
Given that a language handler would be expected to be persistent, and to support concurrent (and reentrant) calls within a single database, is there a unique context or session identifier available?
Is there a place to store data, to be retrieved later in the same session?
Is there a place to store data (a cache?) that has been retrieved from the database for use by concurrent sessions using that database?
PL/R also has an implementation for this kind of thing.
David J.
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