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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3647) Support set and map value types in CQL
Date Mon, 11 Jun 2012 19:58:44 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13293017#comment-13293017
] 

Jonathan Ellis commented on CASSANDRA-3647:
-------------------------------------------

Sorry, brainstorming again...

Could we do this instead of put/set?  (Do we want to?)

{{noformat}
UPDATE foo SET M[ocd] = 1 WHERE ... ;
UPDATE foo SET L[0] = 1 WHERE ... ;
{{noformat}}

UNQL uses dot notation -- {{SET M.odc = 1}} -- but gives no examples of similar sugar for
arrays, which leads me to infer that arrays can only be modified as an entire literal at once.

bq. add_all

What if we introduced the convention that using the + operator updates the list/set/map? 
That is,

{{noformat}}
SET L = L + [2, 3]
SET S = S + {4, 5}
SET M = M + {'asdf': 6, 'fdsa': 7}
{{noformat}}

If we combined this with the [] syntax for setting a single item, that would just leave us
with discard to solve and we wouldn't need this somewhat clunky "method call" syntax.

Maybe some extension to DELETE?
                
> Support set and map value types in CQL
> --------------------------------------
>
>                 Key: CASSANDRA-3647
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3647
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: API, Core
>            Reporter: Jonathan Ellis
>            Assignee: Sylvain Lebresne
>              Labels: cql
>             Fix For: 1.2
>
>
> Composite columns introduce the ability to have arbitrarily nested data in a Cassandra
row.  We should expose this through CQL.

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