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From "mck (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-9532) Provide access to select statement's real column definitions
Date Wed, 03 Jun 2015 09:50:50 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-9532?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

mck updated CASSANDRA-9532:
---------------------------
    Attachment: trunk-9532.txt
                cassandra-2.2-9532.txt
                cassandra-2.1-9532.txt
                cassandra-2.0-9532.txt

New round of patches. Selection.getColumns() already exists.

> Provide access to select statement's real column definitions
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-9532
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9532
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: mck
>            Assignee: mck
>             Fix For: 3.x, 2.1.x, 2.0.x, 2.2.x
>
>         Attachments: cassandra-2.0-9532.txt, cassandra-2.1-9532.txt, cassandra-2.2-9532.txt,
trunk-9532.txt
>
>
> Currently there is no way to get access to the real ColumnDefinitions being used in a
SelectStatement.
> This information is there in
> {{selectStatement.selection.columns}} but is private.
> Giving public access would make it possible for third-party implementations of a {{QueryHandler}}
to work accurately with the real columns being queried and not have to work-around column
aliases (or when the rawSelectors don't map directly to ColumnDefinitions, eg in Selection.fromSelectors(..),
like functions), which is what one has to do today with going through ResultSet.metadata.names.
> This issue provides a very minimal patch to provide access to the already final and immutable
fields.



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