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From Alexander Gabriel <a...@barbalex.ch>
Subject Re: fetching data: how to filter?
Date Sun, 15 May 2011 22:29:37 GMT
That is very helpful and answers my questions.
Thanks for taking so much time. Your effort is very much appreciated!

Alexander Gabriel




2011/5/16 Jim Klo <jim.klo@sri.com>

>
> To understand views:
> http://wiki.apache.org/couchdb/Introduction_to_CouchDB_views
>
> A map function might look like:
>
> function (doc) {
>
> if (doc.Typ) {
> emit(doc.Typ, null);
> }
>
> }
>
>
> then to query the view:
>
> curl -X GET "
> http://localhost:5981/dbname/_design/docname/_view/viewname?key=%22Beobachtung%22&include_docs=true
>
> See http://wiki.apache.org/couchdb/HTTP_view_API for details on querying
> views and other options.
>
>
>
> *
> Jim Klo
> Senior Software Engineer
> Center for Software Engineering
> SRI International
> *
>
>
>
>
> On May 15, 2011, at 2:18 PM, Alexander Gabriel wrote:
>
> thanks a lot for your help. So I can define a view that includes the Typ
> field and filter for it.
> But how do I fetch the data from the view using curl?
>
> Using a list seems like more work.
>
> Alexander Gabriel
>
>
>
>
> 2011/5/15 Jim Klo <jim.klo@sri.com>
>
> You need to define a view, using the name as at least part of the key or
>
> create a list. Then you can filter using the key in a view or some
> parameter
>
> you pass using a list.
>
>
> I suggest taking a look a Max Ogden's talk on CouchDB. It's a great
>
> jumpstart for a newbie.
>
>
> http://vimeo.com/18808177
>
>
> - Jim
>
>
>
> On May 15, 2011, at 1:34 PM, Alexander Gabriel <alex@barbalex.ch> wrote:
>
>
> Hi
>
> I want to fetch documents from a CouchDb named evab. The documents
>
> include a
>
> field "Typ" and I want to fetch those with Typ = Beobachtung.
>
>
> So far I've tried:
>
>
>  - curl -d "{\"Typ\":\"Beobachtung\"}" -X POST
>
>
>
> http://username:secretpassword@127.0.0.1:5984/evab/_bulk_docs?include_docs=true
>
>
> Beobachtungen.json
>
>  - curl -d "{\"docs\": [{\"Typ\":\"Beobachtung\"}]}" -X POST
>
>
>
> http://username:secretpassword@127.0.0.1:5984/evab/_all_docs?include_docs=true
>
>
> Beobachtungen.json
>
>  - replacing {\"Typ\":\"Beobachtung\"} or {\"docs\":
>
>  [{\"Typ\":\"Beobachtung\"}]} with "@TypBeob_Kriterien.json" to
>
> circumvent
>
>  problems with the windows-command-tool and " or '.
>
>
> I consistently get all the data of all the docs in the CouchDb.
>
>
> From the documentation I have not understood:
>
>
>  - _all_docs or _bulk_docs? It seems that both work the same.
>
>  - Is ist maybe only possible to filter with keys = _id's?
>
>  - Is it possible to fetch the data from a view?
>
>
>
> Or simply: What is the best way to do it?
>
>
> Thanks for help!
>
>
> Alexander Gabriel
>
>
>
>

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