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 robert.newson@gmail.com
 designates 209.85.214.52 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        b=ZLZDTuHzms9eN5JgaJUd80hRtpbZhKKpUhvWmCRexkqlgx17t9In/VnYEPPqFvX8Qk
         ktmiEI0WizqQDyd/TAQI2ZNhIjiYgPZHXhhhq04lVjr8ZzT3qhjrV2PTFcr3WOBY2YDP
         d1ZDctWm/7sFfbXJQhuTkIAPBfn8IsOEgwVzY=
MIME-Version: 1.0
In-Reply-To: <AANLkTi=Li848bEqrc=SoMwWO4zfdckBSL-nPnoZT=xdc@mail.gmail.com>
References: <AANLkTikugUEjMOS+gF3aNCL9fDCc-ODmRUs7gZzgJNNX@mail.gmail.com>
	<AANLkTik4kTSdQRsmRfELVUEMwSK41L7umR1H5byAPYE7@mail.gmail.com>
	<AANLkTimE3mhaWBoiv_xZuDN_VqXbQun+-5gWoQ_ocL75@mail.gmail.com>
	<AANLkTi=Li848bEqrc=SoMwWO4zfdckBSL-nPnoZT=xdc@mail.gmail.com>
Date: Thu, 10 Feb 2011 23:13:48 +0000
Message-ID: <AANLkTimbWYok9D=NVVQQZOW6Yz07uy+Co4yPJaGcEtFS@mail.gmail.com>
Subject: Re: CouchDB and tags
From: Robert Newson <robert.newson@gmail.com>
To: user@couchdb.apache.org
Content-Type: text/plain; charset=ISO-8859-1

Aha, yes, subtle.

"A" is a "stop word". A word deemed so common that it's stripped while indexing.

add "analyzer":"keyword" at the same level as "index".

B.

On 10 February 2011 22:47, Amedeo Paglione <amedeo.paglione@gmail.com> wrote:
> Thanks for the suggestion. The solution was based not considering other
> indexing server other than the standard view, but I got curious to see the
> integration with lucene, considering also that a full-text index can be
> really helpful.
>
> Configuring couchdb-lucene was quite simple, but I got unexpected results on
> some of the queries.
>
> I have documented it in this gist:
>
> https://gist.github.com/fe0fcf29cb38e7df23d1
>
> Is the function described the best way to index an array of tags?
>
> Thanks,
> --
> Amedeo
>
>
>
>
> On Thu, Feb 10, 2011 at 17:11, Robert Newson <robert.newson@gmail.com>wrote:
>
>> couchdb-lucene is an alternative to the combinatorial explosion approach;
>>
>> https://github.com/rnewson/couchdb-lucene
>>
>> B.
>>
>> On 10 February 2011 15:57, Zachary Zolton <zachary.zolton@gmail.com>
>> wrote:
>> > Amedeo,
>> >
>> > If you can afford the disk space, it's a fair tradeoff. I've used a
>> > similar strategy in the past, and it worked out well for me.
>> >
>> > You may want to consider limiting the maximum size of tag combinations
>> > to index. For example, I changed my view to emit tag combination
>> > arrays with no more than 4 elements. This could significantly reduced
>> > the index size if your documents have many tags.
>> >
>> >
>> > Cheers,
>> >
>> > Zach
>> >
>> >
>> > On Thu, Feb 10, 2011 at 9:29 AM, Amedeo Paglione
>> > <amedeo.paglione@gmail.com> wrote:
>> >> Hi all,
>> >>
>> >> I have been playing with CouchDB for a while and I had to address the
>> >> problem of retrieving documents which match a list of tags.
>> >>
>> >> I have documented my approach here:
>> >>
>> >> https://gist.github.com/820412
>> >>
>> >> It is working, but I am wondering what could be an alternative and more
>> >> efficient solution to this problem.
>> >>
>> >> Regards,
>> >> --
>> >> Amedeo
>> >>
>> >
>>
>