Well to throw fire on the debate, that was actually really simple in Thrift.
On Jun 13, 2014, at 10:50 PM, Kevin Burton <bur...@spinn3r.com> wrote:
> I could see just saying screw it and storing a serialized json object that
> gets read back in automatically as a map. That wouldn't be too painful but
> just not super pretty in terms of representing the data in cassandra.
>
>
> On Fri, Jun 13, 2014 at 8:45 PM, Jack Krupansky <j...@basetechnology.com>
> wrote:
> The first question is how you need to access this data. Do you need to
> directly access “bar” from a SELECT? Do you need to access “foo” as... what –
> Java Map, or what?
>
> That said, you can always flatten a map of maps by simply concatenating the
> keys, such as {“foo_bar”: “hello”} and then you can select ‘foo_bar’. Ditto
> for additional levels. And if you want each of the intermediate levels, pick
> a serialization format such as JSON or BSON in addition to the flattened leaf
> values. Anything in your use case(s) that doesn’t cover?
>
> -- Jack Krupansky
>
> From: Kevin Burton
> Sent: Friday, June 13, 2014 8:17 PM
> To: user@cassandra.apache.org
> Subject: Pattern to store maps of maps...
>
> So the cassandra map support in CQL is nice but it's got me wanting deeper
> nesting.
>
> For example { "foo": { "bar": "hello" } }
>
> … but that's not possible with CQL.
>
> Of course… one solution is something like avro, and then store your entire
> record as a blob.
>
> I guess that's not TOO bad but that means all my data is somewhat opaque to
> cqlsh.
>
> What are my options here? What are you guys doing to work around this
> problem?
>
> --
>
> Founder/CEO Spinn3r.com
> Location: San Francisco, CA
> Skype: burtonator
> blog: http://burtonator.wordpress.com
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>
> War is peace. Freedom is slavery. Ignorance is strength. Corporations are
> people.
>
>
>
> --
>
> Founder/CEO Spinn3r.com
> Location: San Francisco, CA
> Skype: burtonator
> blog: http://burtonator.wordpress.com
> … or check out my Google+ profile
>
> War is peace. Freedom is slavery. Ignorance is strength. Corporations are
> people.
>
