dylanhz opened a new pull request, #27817: URL: https://github.com/apache/flink/pull/27817
## What is the purpose of the change This is the fourth PR for [FLIP-556](https://cwiki.apache.org/confluence/display/FLINK/FLIP-556%3A+Introduce+BITMAP+Data+Type), following [#27778](https://github.com/apache/flink/pull/27778). This PR introduces built-in scalar functions for the BITMAP type, BITMAP literal support in Table API, and comprehensive BITMAP cast tests. ## Brief change log - Added 10 built-in scalar functions: `BITMAP_BUILD`, `BITMAP_FROM_BYTES`, `BITMAP_TO_BYTES`, `BITMAP_TO_ARRAY`, `BITMAP_TO_STRING`, `BITMAP_CARDINALITY`, `BITMAP_AND`, `BITMAP_ANDNOT`, `BITMAP_OR`, `BITMAP_XOR` - Supported BITMAP literal in Table API via `BITMAP_FROM_BYTES(serialized_bytes)` in `ApiExpressionUtils` - Added BITMAP cast tests in `CastFunctionITCase`, `CastRulesTest`, and `CastFunctionMiscITCase` - Added documentation (EN/ZH), Java Table API, and PyFlink bindings for all functions ## Verifying this change This change added tests and can be verified as follows: - `BitmapFunctionsITCase`: Integration tests for all 10 functions covering null handling, boundary values, runtime errors, and validation errors - `CastFunctionITCase` / `CastRulesTest`: BITMAP cast tests covering all logical types and truncation/padding behavior ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): no - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: yes (`BaseExpressions`) - The serializers: no - The runtime per-record code paths (performance sensitive): no - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? yes - If yes, how is the feature documented? docs / JavaDocs -- 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]
