[jira] [Commented] (CASSANDRA-5141) Can not insert an empty map.

["Dave Brosius (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-5141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13550936#comment-13550936 ] 

Dave Brosius commented on CASSANDRA-5141:
-----------------------------------------

cql.g's 

set_literal and map_literal can't differentiate {} without outside knowledge, and so just choose set.
                
> Can not insert an empty map. 
> -----------------------------
>
>                 Key: CASSANDRA-5141
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5141
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.2.0
>            Reporter: Krzysztof Cieslinski Cognitum
>            Priority: Minor
>
> It is not possible to insert an empty map. It looks like the "{}" is reserved only for Set.
> So when for table:
> {code}
> CREATE TABLE users (
>     id text PRIMARY KEY,
>     surname text,
>     favs map<text, text>
> )
> {code}
> I try to insert map without any elements:
> {code}
> cqlsh:test> insert into users(id,surname,favs) values('aaa','aaa',{});
> {code}
> I get:
> {code}
>  Bad Request: Set operations are only supported on Set typed columns, but org.apache.cassandra.db.marshal.MapType(org.apache.cassandra.db.marshal.UTF8Type,org.apache.cassandra.db.marshal.UTF8Type) given.
> text could not be lexed at line 1, char 63
> {code}

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