twalthr opened a new pull request #10307: [FLINK-14903][table] Relax structured types constraints URL: https://github.com/apache/flink/pull/10307 ## What is the purpose of the change In order to allow type extraction of structured types that are not registered in a catalog, we need to relax the structured type concept to "inline or anonymous structured types" that are not identified by an object identifier in a catalog but the fully qualified implementation class. This PR also fixes issues with `UnresolvedIdentifier` ## Brief change log - Use `UnresolvedIdentifier` everywhere - Fix equals of `UnresolvedIdentifier` - Make `ObjectIdentifier` optional for anonymous structured types ## Verifying this change This change is already covered by existing tests. ## 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 - The serializers: no - The runtime per-record code paths (performance sensitive): no - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, 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? JavaDocs
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