Shikha created CALCITE-7549:
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Summary: Programs.of should support an optional RelOptListener
Key: CALCITE-7549
URL: https://issues.apache.org/jira/browse/CALCITE-7549
Project: Calcite
Issue Type: Improvement
Components: core
Reporter: Shikha
Assignee: Shikha
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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