| From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
|---|---|
| To: | david(at)andl(dot)org |
| Cc: | pgsql-general-owner+M220479=david=andl(dot)org(at)postgresql(dot)org, pgsql-general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Does a call to a language handler provide a context/session, and somewhere to keep session data? |
| Date: | 2016-03-07 05:28:05 |
| Message-ID: | CAKFQuwYnorKZZOQH52DwQncceXAQvLCSp1QAgNu0YOcmYqVcNg@mail.gmail.com |
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| Lists: | pgsql-general |
On Sun, Mar 6, 2016 at 10:21 PM, <david(at)andl(dot)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?
>
http://www.postgresql.org/docs/9.5/interactive/plpython-sharing.html
PL/R also has an implementation for this kind of thing.
David J.
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