Re: Foreign Data Wrapper for filesystem

El 15/02/17 a las 13:27, John McKown escribió:
> On Wed, Feb 15, 2017 at 10:20 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us
> <mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us>>wrote:
>
> "=?UTF-8?Q?Leonardo_M._Ram=c3=a9?=" <l(dot)rame(at)griensu(dot)com
> <mailto:l(dot)rame(at)griensu(dot)com>> writes:
> > Hi, I'm looking for a FDW that allows listing a directory as a
> database
> > table allowing me to check if file exists, does anyonke know if
> such FDW
> > exists?.
>
> Why not use pg_ls_dir()? An FDW would be mighty awkward to use
> for this
> purpose, even if one existed.
>
>
> ​It cannot be used for an arbitrary directory:
> " Only files within the database cluster directory and the
> log_directory can be accessed. "​
> ​ref: https://www.postgresql.org/docs/current/static/functions-admin.html​
>
>
> regards, tom lane
>
>
> ​Personally, I don't know what use such a function would be. It would
> be executed on the _SERVER_, not the client. And that is probably why
> the pg_ls_dir() is restricted. If it weren't it could be a security
> (or privacy) violation.​
>
> --
> "Irrigation of the land with seawater desalinated by fusion power is
> ancient. It's called 'rain'." -- Michael McClary, in alt.fusion
>
> Maranatha! <><
> John McKown

Well, I need to check the existence of a file from a query/procedure.
After posting I remembered I could do this with plperlu, I'm installing
it right now.

Regards,
--
Leonardo M. Ramé
Medical IT - Griensu S.A.
Av. Colón 636 - Piso 8 Of. A
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