Re: lo wrappers - still working on it

From: "Eric G(dot) Miller" <egm2(at)jps(dot)net>
To: PG-General <pgsql-general(at)postgresql(dot)org>
Subject: Re: lo wrappers - still working on it
Date: 2001-07-04 04:25:07
Message-ID: 20010703212507.A6240@calico.local
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On Tue, Jul 03, 2001 at 08:56:20PM -0700, Scott Holmes wrote:
> Perhaps someone can point me towards what I'm missing. I've included my make
> command, the command for creating a function and the actual code I wrote
> (derived from the sample code in the docs). Incidentally, this project is too
> far along to change to java or any other interface. I currently am handling
> the files to be lo's as system files but the request is in to save them as
> blobs.

You've written a client-side program, but are trying to use it as a
server side function. I don't think that'll work. You don't want to be
using libpq for server side functions. I don't know the Java interface, but
it seems you are trying to do what is already available via
lo_import/lo_export functions. Maybe you could explain the interface
you need a little better. Is it not possible to use the lo_import() and
lo_export functions that are already available? (Why they are hidden in
the Programmer's Guide is beyond me...).

SELECT lo_export (<table>.<column>, '/path/to/file') from <table>;
INSERT INTO <table> (<column>) VALUES (lo_import ('/path/to/file'));

Someone recently suggested using bytea fields for blobs as well...

--
Eric G. Miller <egm2(at)jps(dot)net>

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