haruki-830 opened a new pull request, #4496: URL: https://github.com/apache/flink-cdc/pull/4496
#### Summary This commit extends Flink CDC Transform expressions with Flink SQL collection constructors and functions. It adds support for constructing and operating on nested ARRAY, MAP, and ROW values in projection and filter expressions. #### Key Changes 1. Collection Constructors - Added support for `ARRAY[...]`, `MAP[...]`, and `ROW(...)`. - Added recursive type coercion for nested collection constructors. - Added ROW type conversion with generated field names such as `f0` and `f1`. 2. Collection Functions - Added support for `CARDINALITY`, `ARRAY_CONTAINS`, `ARRAY_POSITION`, and `ELEMENT`. - Supports arrays and maps where applicable, including nested values and NULL handling. - Reports an error when `ELEMENT` receives an array containing multiple elements. 3. Parser and Expression Compilation - Enabled explicit `ROW(...)` constructors while preserving existing MySQL conformance behavior. - Added Calcite operator registration and Janino expression generation for the new constructors and functions. - Supports the new expressions in both projections and filters. 4. Test Coverage and Documentation - Added unit tests for constructors, functions, NULL behavior, nested values, and error cases. - Added Transform specification tests for projections, filters, and nested collection types. - Updated the English and Chinese Transform documentation. #### JIRA Reference [https://issues.apache.org/jira/browse/FLINK-40313](https://issues.apache.org/jira/browse/FLINK-40313) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
