[ZODB-Dev] Excellent overview of ODBMS and my take on ZODB

[Patrick K. O'Brien]

Thanks for the helpful suggestions, Casey. I just discovered your
CatalogQuery hotfix (http://www.zope.org/Members/Kaivo/CatalogQuery/) and am
surprised you hadn't mentioned it. I'm hoping it sheds some light on what
I'm up against.

In what way do you "hope to have a hand in creating a Pythonic query
language"? It would seem you've already started on one. Care to elaborate?
Jim seems keen to have one, but I'm not sure I'm up to the task. I will take
a look at what you have, though. Thanks again.

---
Patrick K. O'Brien
Orbtech

> -----Original Message-----
> From: zodb-dev-admin@zope.org [mailto:zodb-dev-admin@zope.org]On Behalf
> Of Casey Duncan
> Sent: Tuesday, February 26, 2002 8:50 AM
> To: pobrien@orbtech.com; Chris Withers
> Cc: Pythoncard; ZODB
> Subject: Re: [ZODB-Dev] Excellent overview of ODBMS and my take on ZODB
>
> There are several indexing options for standalone ZODB. The most
> basic one,
> that comes with the standalone package is BTrees. They are pretty
> low-level,
> but can be used to create indexes of objects.
>
> PluginIndexes and Catalog (not ZCatalog), can also, in theory, be used
> outside of Zope, but you would need to pry them loose from their Zope
> moorings. IOW they will probably not work by just pulling the
> packages out of
> Zope right away. I imagine TextIndexes would be quite useful
> outside of Zope
> tho.
>
> On the bright side, Zope 3 should go a long way toward solving
> this problem,
> since it not only makes it easier to use non-Zope Python packages
> in Zope,
> but should also make it much easier to pluck specific fruit out
> of Zope (like
> ObjectHub) and use it standalone.
>
> As for a query language, I hope to have a hand in creating a
> Pythonic query
> language that can encapsulate queries as Python objects. These
> query objects
> could then be applied to any collection of Python objects that
> has an adapter
> implemented to run queries. Things like ObjectHub and Folder could have
> adapters for this. That could be used as a basis for other
> minilanguages like
> OQL or XPath if somebody else wanted them (I don't 8^)
>
> /---------------------------------------------------\
>   Casey Duncan, Sr. Web Developer
>   National Legal Aid and Defender Association
>   c.duncan@nlada.org
> \---------------------------------------------------/
>
> _______________________________________________
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> http://www.zope.org/Wikis/ZODB/
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