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https://issues.apache.org/jira/browse/CALCITE-7549?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shikha updated CALCITE-7549:
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Summary: Add Programs.of overload that accepts RelOptListener (was:
Programs.of should support an optional RelOptListener)
> Add Programs.of overload that accepts RelOptListener
> ----------------------------------------------------
>
> Key: CALCITE-7549
> URL: https://issues.apache.org/jira/browse/CALCITE-7549
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Shikha
> Assignee: Shikha
> Priority: Minor
> Labels: pull-request-available
>
> Programs.of(HepProgram, boolean, RelMetadataProvider) constructs a HepPlanner
> internally with no way to attach a RelOptListener before findBestExp(). This
> makes it impossible to observe rule firings when composing phases via
> Programs.sequence.
> Proposal: Add an overload Programs.of(HepProgram, boolean,
> RelMetadataProvider, RelOptListener) that attaches the listener to the
> internally-constructed HepPlanner before calling setRoot/findBestExp. When
> listener is null, behavior is identical to the existing method.
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