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Re: [HACKERS] Function-manager redesign: second draft (long)

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: Jan Wieck <wieck(at)debis(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: [HACKERS] Function-manager redesign: second draft (long)
Date: 1999-10-26 16:49:57
Message-ID: (view raw or whole thread)
Lists: pgsql-hackers
> >
> > [ responding to both of Jan's messages in one ]
> >
> > wieck(at)debis(dot)com (Jan Wieck) writes:
> > >     I like the current interface for it's simpleness from the  user
> > >     function   developers  point  of  view.
> >
> > There is that; even with a good set of convenience macros there will be
> > more to learn about writing user functions.  OTOH, the way it is now
> > is not exactly transparent --- in particular, NULL handling is so easy
> > to forget about/get wrong.  We can make that much easier.  We can also
> > simplify the interface noticeably for standard types like float4/float8.
> >
> > BTW: I am not in nearly as big a hurry as Bruce is to rip out support
> > for the current user-function interface.  I want to get rid of old-style
> > builtin functions before 7.0 because of the portability issue (see
> > below).  But if a particular user is using old-style user functions
> > and isn't having portability problems on his machine, there's no need
> > to force him to convert, it seems to me.
>     Personally,  I  could  live  with  dropping  the  entire  old
>     interface. That's not the problem. But at least Bruce and his
>     book  need  to  know  the final programming conventions if we
>     ought to change it at all,  so  it  can  be  covered  in  his
>     manuscript when it is sent down to the paper.

No.  My coverage of that is going to be more conceptual than actual
programming.  Do whatever you think is best.

  Bruce Momjian                        |
  maillist(at)candle(dot)pha(dot)pa(dot)us            |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

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