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Posted to commits@cassandra.apache.org by "Sylvain Lebresne (Commented) (JIRA)" <ji...@apache.org> on 2012/03/27 10:05:40 UTC
[jira] [Commented] (CASSANDRA-4084) Better validator support for
composite comparator CFs
[ https://issues.apache.org/jira/browse/CASSANDRA-4084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13239295#comment-13239295 ]
Sylvain Lebresne commented on CASSANDRA-4084:
---------------------------------------------
This is already supported by CQL3 I believe, unless I'm not understanding this correctly (I did not understood what wildcard had to do with validators though so maybe I did misunderstood the idea).
> Better validator support for composite comparator CFs
> -----------------------------------------------------
>
> Key: CASSANDRA-4084
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4084
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Tyler Hobbs
> Priority: Minor
>
> Perhaps this should be part of replacing super columns with composites, but we essentially need something analogous to sub-column validators for when composites are used in a way that's similar to super columns (multiple fields for each "super column" in a row). As an example use case, suppose you have a wide row holding users where the comparator is (<user_id>, <field>), and <field> might be either "name" or "age"; ideally, you can validate "name" as UT8Type and "age" as IntegerType.
> Allowing wildcards to be used for components in the column name portion of the ColumnDef might be a reasonable approach.
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