pcplantdb

[Richard Morris <webmaster@pfaf.org>]

(somehow I've lost the original post so I may be out of cotext).

Lawrence F. London, Jr. wrote:
> Chad Knepp wrote:
>
> > Options:
> >
> >   o Keep developing HG in Zope as planned.  This is a doable option
> >     although I'm currently not very excited about it.  I also am no
> >     longer sure that developing in Zope will be in anyway better or
> >     faster than alternate methods.
Somehow I've got the same feeling about Zope. It is too complex a system 
to really do the quite adventious system we are trying to put together.
It seems good for doing fairly stratforward CMS systems but when it 
comes to more involved objects it seems awkard.
So much time needs to go into getting things to work the zope way.

End of the day we will get the best results, if you work in the 
environment you feel happiest in.

> >   o Develop from Eden.  Look into ORMs and/or take a week off to write
> >     one.  In my current frame of mind this sounds like what I would
> >     like to do, although it means we wasted 33 hours or about 5% of
> >     our current funding.
From a puerly personal viewpoint I prefer this option. I feel I am 
nowhere near Chads level in understanding Zope this makes it hard for me 
to do a good job of helping Chad at the code level. I'd feel easier 
working with systems I know more about.

Looking at ORM's seems good. I'd actually consider doing it by hand,
possibly the best way to actually understand the mapping.

> Nothing was wasted. I think this is the best new path to take. My vote 
> is yes
> for Develop from Eden.

Even if we no longer use Zope I think we have made great progress. I 
feel we know much more at a code level the type of system we need.
In particular I feel that we know better what the Objects in the OO 
system need to be. From my experience this is the hardest part of 
getting an OO system together, it takes a lot of messing about and a lot 
going into the waste basket before you actually arrive at the correct 
set of objects, its only then that the real coding can begin.
> >   o Do something even more radical like just use Medusa (ZServer) and
> >     ZODB together getting rid of all the Zope cruft.  Part of the
> >     reason I was so sold on Zope is that I really liked the
> >     development of ack! in ZODB.  It might be interesting to integrate
> >     ZODB with Twisted <twistedmatrix.com>.
Hum, better than Zope I think. Is the ZODB the best object database 
about, is it easy to use to store our own objects with our own indexing 
systems and relations between the objects? Theres a host of other object 
 databases about, I found a good site which compared object databases 
and their capabilities, apachee have an intresting one.

Form a brief look at twisted I'd say cool, it seems to provide a lot of 
the stuff we need. However worth looking at
http://twistedmatrix.com/documents/current/howto/tutorial/index
The code there seems nice and understandable. More a library than
the Zope type of system (a good thing imo).

It might be worth examining DIVMOD 
http://www.divmod.org/Home/Projects/Nevow/
which seems to be the prefered twisted "Web Application Construction Kit".

Interesting times!

        Rich

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