Re: proposal for PL packages for 8.3.

From: "Pavel Stehule" <pavel(dot)stehule(at)hotmail(dot)com>
To: bruce(at)momjian(dot)us, kleptog(at)svana(dot)org
Cc: dev(at)archonet(dot)com, josh(at)agliodbs(dot)com, tgl(at)sss(dot)pgh(dot)pa(dot)us, pgsql-hackers(at)postgresql(dot)org
Subject: Re: proposal for PL packages for 8.3.
Date: 2006-08-09 15:29:52
Message-ID: BAY20-F518F0F11F59F41F3D5C38F9550@phx.gbl
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>Martijn van Oosterhout wrote:
>-- Start of PGP signed section.
> > On Wed, Aug 09, 2006 at 08:38:22AM +0100, Richard Huxton wrote:
> > > There are three separate issues we seem to be talking about.
> > >
> > > 1. Namespaces - visibility or otherwise of objects
> > > 2. Procedural state - something that looks like a shared variable
> > > 3. Packaging - installation/dependency handling
> >
> > Well, it would be nice to have some clarification about the expected
> > scope and lifetimes of these variables. If two different sessions
> > change the values, what's supposed to happen?
>
>Right, I am confused whether these are session or schema-local
>variables. What does Oracle support? Looking at this:
>
> http://thinkoracle.blogspot.com/2005/10/oracle-packages.html
>
>it seems varaiable are per-session.
>

Oracle use packages dbms_pipe and dbms_alert for interprocess communication,
not shared variables. For both packages exists emulation in orafunc on
pgfoundry.

regards
Pavel

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