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From "Rick Shaw (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4495) Don't tie client side use of AbstractType to JDBC
Date Wed, 05 Jun 2013 21:39:20 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13676376#comment-13676376
] 

Rick Shaw commented on CASSANDRA-4495:
--------------------------------------

Could this solution be enhanced to address the collection types? (List, Set, and Map). This
is really awkward to do on the client side. 

{{getType()}} in each class would also be handy when you are passed the AbstractType.

Is there a reason you did not remove the {{o.a.c.cql.jdbc}} package from the build?
                
> Don't tie client side use of AbstractType to JDBC
> -------------------------------------------------
>
>                 Key: CASSANDRA-4495
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4495
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Sylvain Lebresne
>            Assignee: Carl Yeksigian
>            Priority: Minor
>             Fix For: 2.0
>
>         Attachments: 4495.patch
>
>
> We currently expose the AbstractType to java clients that want to reuse them though the
cql.jdbc.* classes. I think this shouldn't be tied to the JDBC standard. JDBC was make for
SQL DB, which Cassandra is not (CQL is not SQL and will never be). Typically, there is a fair
amount of the JDBC standard that cannot be implemented with C*, and there is a number of specificity
of C* that are not in JDBC (typically the set and maps collections).
> So I propose to extract simple type classes with just a compose and decompose method
(but without ties to jdbc, which would allow all the jdbc specific method those types have)
in the purpose of exporting that in a separate jar for clients (we could put that in a org.apache.cassandra.type
package for instance). We could then deprecate the jdbc classes with basically the same schedule
than CQL2.
> Let me note that this is *not* saying there shouldn't be a JDBC driver for Cassandra.

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