[Q] ImageSegments as a persistence mechanism (was Re: Proposal to
get to the triad)
Hannes Hirzel
hannes.hirzel.squeaklist at bluewin.ch
Tue Mar 11 14:55:16 UTC 2003
goran.hultgren at bluefish.se wrote:
> Hannes Hirzel <hannes.hirzel.squeaklist at bluewin.ch> wrote:
> > Hi Goran
> >
> > goran.hultgren at bluefish.se wrote:
> > >
> > > True but ImageSegments are damn nice. They are very fast, very reliable
> > > and well, simply great. I use them as a trememendously simple way of
> > > persisting an object. In my app the HomepageBuilder the code for
> > > persistence is like 20 lines. Period. Its "poor man's" OODB.
> > Would it be possible to post this code?
>
> Of course, it has already been posted. :-)
>
> I actually did that back in january 2002. So I just did a bit of
> searching for you, to begin with here is what I did post back then on
> the Swiki (I just searched the Swiki for "ImageSegment):
> http://minnow.cc.gatech.edu/squeak/2429
>
> And here is more describing them:
> http://minnow.cc.gatech.edu/squeak/2316
>
> Here is a reply at the time from Dan answering your question in part:
> http://lists.squeakfoundation.org/pipermail/squeakfoundation/2002-Janua
> ry/000373.html
>
> Anyway, you can find more about this in the archives, just search for
> "ImageSegment" etc. I did search for the original post when they were
> introduced (somewhere around 12/8/1999 I guess) but couldn't find an
> archive that went that long back. Ahrg, I hope we aren't loosing old
> stuff...
>
> Anyway, you should of course also read this:
> http://coweb.cc.gatech.edu:8888/squeakbook/uploads/formatted-btf-once-mo
> re.pdf
>
> (search for ImageSegment to get to the juicy part describing them)
>
> Anyway, they work like a charm and are FAST and they are the basis of
> Projects (.pr files) but they **can** be used for anything and that was
> what my little howto showed. I use them as I said quite a lot.
>
> regards, Göran
Thank you for your detailed and long answer. I will use it to create
more inter-linking on the swiki!
-- Hannes
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