[jira] [Commented] (CALCITE-2855) Make RelOptCluster constructor public

[godfrey he (JIRA)]

    [ 
https://issues.apache.org/jira/browse/CALCITE-2855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16771025#comment-16771025
 ] 

godfrey he commented on CALCITE-2855:
-------------------------------------

Hi [~zabetak],

I want to extend RelMetadataQuery(add more metadata handlers), and always use 
extended RelMetadataQuery instead of default RelMetadataQuery.  So I will 
create extended RelMetadataQuery instance in extended RelOptCluster class and 
override RelOptCluster#getMetadataQuery and 
RelOptCluster#invalidateMetadataQuery to meet my needs.

> Make RelOptCluster constructor public
> -------------------------------------
>
>                 Key: CALCITE-2855
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2855
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: godfrey he
>            Assignee: Julian Hyde
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.19.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Expose RelOptCluster Constructor outside package to allow override.



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