Mailing-List: contact user-help@couchdb.apache.org; run by ezmlm
Precedence: bulk
Reply-To: user@couchdb.apache.org
Received-SPF: pass (athena.apache.org: domain of dundeemt@gmail.com designates
 209.85.198.230 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:sender:date:x-google-sender-auth:message-id:subject
         :from:to:content-type;
        b=S2NfIMV5Q+bSab3MgJ8v/JLvm+pvIyQVdRKKsJ0mW7EPovaHgyAOpw86i0V/jFg6yt
         7BQJd2XrW3EQOYJY95vbdZx8S1enrxysJgLHEqGlGCTJ16OIzNiWwISPfuPrMKDzXNmC
         GHG7XTP90UtfCr9npklsoYAhMIervsrBSy2vg=
MIME-Version: 1.0
Sender: dundeemt@gmail.com
Date: Mon, 19 Jan 2009 18:15:43 -0600
Message-ID: <5aaed53f0901191615r6062c9e3gf1dd966ec206bd03@mail.gmail.com>
Subject: on Reduce w/ Python view server
From: "Jeff Hinrichs - DM&T" <jeffh@dundeemt.com>
To: couchdb-user <user@couchdb.apache.org>
Content-Type: multipart/alternative; boundary=000e0cd14964aa7c850460def0d5

--000e0cd14964aa7c850460def0d5
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

Using couchdb-python 0.5 and couchdb 0.9.0a735191-incubating

I am working on a "rosetta stone" for javascript and python views. (nothing
like rewriting in a different language to lean something<g>) I've worked
though the simple map only views.  I then did a simple reduce(keys,vals)
which worked out fine.  But I am stumped on rereduce when the function
signature includes keys,vals,rereduce.  I've been trying to work through the
js code from "Top N Tags" from the snippets page,
http://wiki.apache.org/couchdb/View_Snippets

In particular, I am confused as to what is passed to the rereduce function
when rereduce=True.  The javascript is returning a complex structure instead
of a simple scalar, I see that it has to do with getting state back from a
previous reduce operation, but I'm confused. The unpacking of the previous
results, I think has me befuddled ;(


Any help is appreciated.


Regards,

Jeff
p.s. Yes, I'd be happy to make a wiki page out of my work, but I'm not sure
where it belongs, couchdb wiki or the couchdb-python wiki.

--000e0cd14964aa7c850460def0d5--