[Backport 2.19-dev] Add unified function interface with function discovery API #5047
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* Add initial impl for unified function and repository Signed-off-by: Chen Dai <[email protected]> * Simplify unified function impl by built-in rex executor Signed-off-by: Chen Dai <[email protected]> * Extract unified function builder abstraction Signed-off-by: Chen Dai <[email protected]> * Refactor unified function repository internal and javadoc Signed-off-by: Chen Dai <[email protected]> * Remove type converter and use Calcite's sql type name as unified type for now Signed-off-by: Chen Dai <[email protected]> * Update readme Signed-off-by: Chen Dai <[email protected]> * Refactor unified function repository API and javadoc Signed-off-by: Chen Dai <[email protected]> * Refactor unified function calcite adapter to remove rex executable field Signed-off-by: Chen Dai <[email protected]> * Update readme Signed-off-by: Chen Dai <[email protected]> * Polish all javadoc comments Signed-off-by: Chen Dai <[email protected]> * Refactor calcite adapter create with utility methods Signed-off-by: Chen Dai <[email protected]> * Address comments from CodeRabbit Signed-off-by: Chen Dai <[email protected]> --------- Signed-off-by: Chen Dai <[email protected]> (cherry picked from commit 3f646d5) Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
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dai-chen
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Jan 14, 2026
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Backport 3f646d5 from #5039.