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https://issues.apache.org/jira/browse/CASSANDRA-2474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13185225#comment-13185225
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Sylvain Lebresne commented on CASSANDRA-2474:
---------------------------------------------
bq. Clients ought to be able to know what a CF's default comparator and
validation types are, even if they're not necessary to deserialize column
values.
I think one of the goal is to not necessarily stick to C* internal notion, as
supported by the fact that specifying the comparator and default_validator
during creates will be removed. Basically, why should we expose internal detail
that are useless (which I'm claiming they are after this patch) for the client?
bq. Would this still be possible without being able to tell whether column
values had an explicit column_metadata type, or whether they were using the
default?
I don't see any problem to having an ASSUME facility with what I'm proposing.
Maybe it will be more clear with the patch, but I really thing that after the
patch those info adds really no value to the resultSet.
> CQL support for compound columns and wide rows
> ----------------------------------------------
>
> Key: CASSANDRA-2474
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2474
> Project: Cassandra
> Issue Type: New Feature
> Components: API, Core
> Reporter: Eric Evans
> Assignee: Sylvain Lebresne
> Priority: Critical
> Labels: cql
> Fix For: 1.1
>
> Attachments: 2474-transposed-1.PNG, 2474-transposed-raw.PNG,
> 2474-transposed-select-no-sparse.PNG, 2474-transposed-select.PNG,
> cql_tests.py, raw_composite.txt, screenshot-1.jpg, screenshot-2.jpg
>
>
> For the most part, this boils down to supporting the specification of
> compound column names (the CQL syntax is colon-delimted terms), and then
> teaching the decoders (drivers) to create structures from the results.
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