Counters inside Maps

Alex De la rosa alex.rosa.box at gmail.com
Tue Aug 19 18:34:36 EDT 2014


Hi Sean,

I didn't created the bucket_type as a map datatype as at first i was just
testing simple Riak Search... then it occurred to me what if I want a
counter in the data? :)

Your example is pretty straightforward to follow and simple. Just 2
questions:

1. key.counters['number'].increment(1) => No need to define a "counters"
data-type somewhere before putting it inside the map as we normally need in
simple buckets? If it works automatically is great :)

2. if we use "number_counter" instead of "number_i" does Search/SOLR
understand is an integer? in case you want to do a range... as somewhere in
the docs I read that better to use "_s" for strings, "_b" for binary, "_i"
for integers, etc... so SOLR knows how to treat the data... I believe there
will be no strange behaviours for having "_register" instead of "_s" and
"_counter" instead of "_i", right?

Thanks!
Alex


On Wed, Aug 20, 2014 at 12:24 AM, Sean Cribbs <sean at basho.com> wrote:

> Alex,
>
> Assuming you've already made your bucket-type with "map" as the
> datatype, then "bucket.new()" will return you a Map instead of a
> RiakObject. Translating your example above:
>
> key = bucket.new('lionelmessi')
> key.registers['name'].assign('Messi')
> key.registers['team'].assign('Barcelona')
> key.counters['number'].increment(10)
> key.store()
>
> Note that because Maps are based on mutation operations and not
> replacing the value with new ones, you can later do this without
> setting the entire value:
>
> key.counters['number'].increment(1)
> key.store()
>
> This will also change your searches, however, in that the fields will
> be suffixed with the embedded type you are using:
>
> r = client.fulltext_search('ix_footballers', 'team_register:Barcelona')
>
> Hope that helps!
>
> On Tue, Aug 19, 2014 at 2:59 PM, Alex De la rosa
> <alex.rosa.box at gmail.com> wrote:
> > Imagine I have a Riak object "footballer" with some static fields: name,
> > team, number. I store them like this now:
> >
> > 1: CREATE INDEX FOR RIAK SEARCH
> > curl -XPUT "http://148.251.140.229:8098/search/index/ix_footballers"
> >
> > 2: CREATE BUCKET TYPE
> > riak-admin bucket-type create tp_footballers
> > '{"props":{"allow_mult":false,"search_index":"ix_footballers"}}'
> > riak-admin bucket-type activate tp_footballers
> >
> > 3: INSERT A PLAYER
> > bucket = client.bucket_type('tp_footballers').bucket('footballers')
> > key = bucket.new('lionelmessi', data={'name_s':'Messi',
> > 'team_s':'Barcelona', 'number_i':10}, content_type='application/json')
> > key.store()
> >
> > 4: SEARCH FOR BARCELONA PLAYERS
> > r = client.fulltext_search('ix_footballers', 'team_s:Barcelona')
> >
> > So far so good :) BUT... what if I want to have a field "goals_i" that
> is a
> > counter that will be incremented each match day with the number of goals
> he
> > scored? What is the syntax/steps to do to set up "footballers" as a MAP
> and
> > then put a COUNTER inside? I know is possible as I read it in some data
> dump
> > some Basho employee passed me some time ago, but I can't manage to see
> how
> > to do it now.
> >
> > Thanks!
> > Alex
> >
> > _______________________________________________
> > riak-users mailing list
> > riak-users at lists.basho.com
> > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
> >
>
>
>
> --
> Sean Cribbs <sean at basho.com>
> Software Engineer
> Basho Technologies, Inc.
> http://basho.com/
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.basho.com/pipermail/riak-users_lists.basho.com/attachments/20140820/930866f0/attachment.html>


More information about the riak-users mailing list