[jira] [Updated] (CALCITE-5090) Allow class CalciteMetaImpl to be sub-classed

["Julian Hyde (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-5090?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde updated CALCITE-5090:
---------------------------------
    Summary: Allow class CalciteMetaImpl to be sub-classed   (was: Avatica: make it possible to inherit from CalciteMetaImpl )

> Allow class CalciteMetaImpl to be sub-classed 
> ----------------------------------------------
>
>                 Key: CALCITE-5090
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5090
>             Project: Calcite
>          Issue Type: Wish
>            Reporter: Marieke Gueye
>            Priority: Minor
>
> We want to be able to change Avatica's planner, for that, we need to be able to sub-class {{CalciteMetaImpl}}. That is not possible at the moment because the constructor of {{CalciteMetaImpl}} takes a parameter of type {{CalciteConnectionImpl}} as an argument and {{class CalciteConnectionImpl}} is package private.
> The solution could be to add a constructor with a parameter of type {{CalciteConnection}}. At runtime the argument would still be an instance of {{CalciteConnectionImpl}}, and the constructor can downcast it.



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