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Posted to issues@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2015/01/22 01:45:35 UTC

[jira] [Commented] (CALCITE-558) Add BINDABLE convention and make it the default convention for query root

    [ https://issues.apache.org/jira/browse/CALCITE-558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14286668#comment-14286668 ] 

Julian Hyde commented on CALCITE-558:
-------------------------------------

Progress: Commit http://git-wip-us.apache.org/repos/asf/incubator-calcite/commit/66cfb120 adds bindable convention but does not make it default.

> Add BINDABLE convention and make it the default convention for query root
> -------------------------------------------------------------------------
>
>                 Key: CALCITE-558
>                 URL: https://issues.apache.org/jira/browse/CALCITE-558
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Julian Hyde
>            Assignee: Julian Hyde
>
> The default convention is currently ENUMERABLE, which means that to execute a query, and in particular to use the JDBC driver, RelNodes need to be able to convert themselves to code. This introduces a lot of dependencies that make CALCITE-466 difficult to solve.
> We propose to add a new convention that can be more easily implemented by a RelNode, using an interpreter or otherwise.



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