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https://issues.apache.org/jira/browse/CALCITE-3111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16856896#comment-16856896
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Haisheng Yuan commented on CALCITE-3111:
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It is so sad that Calcite allow optimization directly on physical operators,
which will bind itself. I don't think we should unlash the shackles to allow
decorrelating directly on physical operators. More freedom doesn't make it
stronger. But if [~Juhwan] wants to provides his own logical correlate
operator, that would be another story. I would like to know in what aspect the
current LogicalCorrelate doesn't meet your requirement, maybe we can extend
that.
> Allow custom implementations of Correlate in RelDecorrelator
> ------------------------------------------------------------
>
> Key: CALCITE-3111
> URL: https://issues.apache.org/jira/browse/CALCITE-3111
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Juhwan Kim
> Assignee: Juhwan Kim
> Priority: Minor
>
> Currently, RelDecorrelator code only works for LogicalCorrelate.
> Decorrelating through Calcite would become much more flexible if it allows
> using custom implementations of Correlate. This would require refactoring all
> logical rels used in RelDecorrelator to the abstract ones(e.g
> LogicalCorrelate -> Correlate).
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