twalthr opened a new pull request #13142:
URL: https://github.com/apache/flink/pull/13142


   ## What is the purpose of the change
   
   All CREATE FUNCTION statements use the new type inference now. It might 
require
   to update existing implementations to the new reflective type extraction 
logic.
   Use StreamTableEnvironment.registerFunction for the old stack.
   
   ## Brief change log
   
   - Remove TODOs in `FunctionCatalog`
   - Remove `FunctionDefinitionUtil`
   - Deprecate old methods
   
   ## Verifying this change
   
   This change added tests and can be verified as follows: `FunctionITCase`
   
   ## 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, Kubernetes/Yarn/Mesos, ZooKeeper: no
     - The S3 file system connector: no
   
   ## Documentation
   
     - Does this pull request introduce a new feature? no
     - If yes, how is the feature documented? JavaDocs
   


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