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Re: [pgsql-general 2011-1-21:] Are there any projects interested in object functionality? (+ rule bases)

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Nick Rudnick <joerg(dot)rudnick(at)t-online(dot)de>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [pgsql-general 2011-1-21:] Are there any projects interested in object functionality? (+ rule bases)
Date: 2011-02-01 14:03:27
Message-ID: AANLkTimU+=gr5LeGUYWV+Pc_v_=3giBB2c4iH0oG11iY@mail.gmail.com (view raw or flat)
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Lists: pgsql-hackers
On Mon, Jan 31, 2011 at 9:53 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
>> It would help if you were a bit more specific.  Do you mean you want
>> to write something like foo.bar(baz) and have that mean call the bar
>> method of foo and pass it baz as an argument?
>
>> If so, that'd certainly be possible to implement for purposes of a
>> college course, if you're so inclined - after all it's free software -
>> but we'd probably not make such a change to core PG, because right now
>> that would mean call the function bar in schema baz and pass it foo as
>> an argument.  We try not to break people's code to when adding
>> nonstandard features.
>
> You would probably have better luck shoehorning in such a feature if the
> syntax looked like this:
>
>        (foo).bar(baz)
>
> foo being a value of some type that has methods, and bar being a method
> name.  Another possibility is
>
>        foo->bar(baz)
>
> I agree with Robert's opinion that it'd be unlikely the project would
> accept such a patch into core, but if you're mainly interested in it
> for research purposes that needn't deter you.

Using an arrow definitely seems less problematic than using a dot.
Dot means too many things already.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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