[Zope-dev] Searching/Indexing/ZODB/SQL/BerkleyDB

[Chris McDonough]

There are also set objects like OOSets and IISets that can be used in
intersection and union operations as documented in the BTrees module.

----- Original Message -----
From: "Jeffrey P Shell" <jeffrey@cuemedia.com>
To: "Matt Hamilton" <matth@netsight.co.uk>
Cc: <zope-dev@zope.org>
Sent: Thursday, November 29, 2001 12:18 PM
Subject: Re: [Zope-dev] Searching/Indexing/ZODB/SQL/BerkleyDB


>
> On Thursday, November 29, 2001, at 04:03  AM, Matt Hamilton wrote:
>
> > On Thu, 29 Nov 2001, Chris Withers wrote:
> >
> >>> I would rather avoid having to use a relational database unless
I
> >>> have to.
> >>> Perhaps the index pluggability could be made to support
different
> >>> backends
> >>> (like FileStorage et al does).
> >>
> >> Yeah, unfortunately, the difficult bit is combining queries:
> >> gimme the results where index1=='fish' and index2 is between 2
> >> and 5kg.
> >>
> >> if index1 is in SQL and index2 is in ZODB, for example, how would
you
> >> go about efficiently combining results?
> >
> > Is there not a set datatype in python that could be used?
Admittedly,
>
> [SNIP]
>
> There is a 'sets' directory in the Python CVS (in the
> 'nondist/sandbox' area).  I think it was a proposed datatype that
> didn't quite make the cut for 2.2..(?)
>
> Jeffrey P Shell, jeffrey@cuemedia.com
>
>
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