Update metadata of entries in bucket

Grigory Fateyev gfborn at gmail.com
Sat Feb 25 04:17:38 EST 2017


Luke, thank you for the answer!

I did this, my code is:

```
update_users(Item) ->
    Value = binary_to_term(riak_object:get_value(Item)),
    [{_Key, Value}] = statebox:value(Item),
    Record = project_schema_user:new(Value),
    NewMetadata = project_schema_user:riak_metadata(Record),
    NewItem = riak_object:update_metadata(Item, NewMetadata),
    AItem = riak_object:apply_updates(NewItem),
    RiakcObj = to_riakc_obj(AItem),
    %% lager:info("Item ~p", [RiakcObj]),
    ok = redgage_riak_client:put(RiakcObj),
    [].

to_riakc_obj(Object) when element(1, Object) =:= r_object ->
    #riakc_obj{
       bucket = riak_object:bucket(Object),
       key = riak_object:key(Object),
       vclock = riak_object:encode_vclock(riak_object:vclock(Object)),
       contents = riak_object:get_contents(Object)
       %% updatemetadata = riak_object:get_update_metadata(Object),
       %% updatevalue = riak_object:get_update_value(Object)
      }.

```

It works! I had a problem with vclock. I got vclock from r_object, but it's
vclock:vclock()
type. Now I encode it. As you can see commented out two record's fields:
updatemetadata
and updatevalue. How do these fields work?


2017-02-25 0:40 GMT+03:00 Luke Bakken <lbakken at basho.com>:

> Hi Grigory,
>
> Check out this article:
> http://basho.com/posts/technical/webinar-recap-mapreduce-querying-in-riak/
>
> Specifically, the use of riak:local_client() and C:put
> --
> Luke Bakken
> Engineer
> lbakken at basho.com
>
>
> On Thu, Feb 23, 2017 at 10:38 AM, Grigory Fateyev <gfborn at gmail.com>
> wrote:
> > Hello!
> >
> > I'm trying to write riak_pipe command that updates metadata, the code:
> > https://gist.github.com/greggy/7d7fa3102d89673019410c6e244650cd
> >
> > I'm getting every entry in update_metadata/1 then creating a new
> metadata,
> > updating it in Item.
> >
> > My question is how to update r_object in a bucket?
> >
> > Thank you!
> >
> > _______________________________________________
> > riak-users mailing list
> > riak-users at lists.basho.com
> > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
> >
>
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