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From "Ben McCann (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3281) Add an AbstractType anytype which stores meta data on a per column basis
Date Tue, 27 Mar 2012 22:38:29 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13240022#comment-13240022
] 

Ben McCann commented on CASSANDRA-3281:
---------------------------------------

I'm a little foggy on whether I was able to do things like index based on the value of a field
contained within a protobuf.  What I'm definitely missing now is basically the ability to
set the validation_class for a column to ThriftType and then run a CQL query that can scan
the table, deserialize the column, and select thrift structs where a certain field has a certain
value.  Super nice for debugging, running nightly reports, etc.
                
> Add an AbstractType anytype which stores meta data on a per column basis
> ------------------------------------------------------------------------
>
>                 Key: CASSANDRA-3281
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3281
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Edward Capriolo
>            Priority: Minor
>
> A pet project of mine is an AbstractType for Cassandra that stores metadata of the type
in the column. https://github.com/edwardcapriolo/Cassandra-AnyType
> I described my use case any my design decisions here. https://github.com/edwardcapriolo/Cassandra-AnyType/blob/master/README
. The biggest cases were needing to support null and '' as keys, column names, and column
values, however I also think the technique used to serialize Java Objects as JSON but compare
as a Java object is novel. 
> Side node: (The AbstractType interface has changed multiple times between 0.6.X, 0.7.X,
and 1.0.0-beta. I hope it stabilizes! ) 
> If people would like AnyType (or parts of it ) incorporated into Cassandra that would
be great. I am willing to tweak change it based on other peoples ideas.

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