[GitHub] [flink] twalthr opened a new pull request #10368: [FLINK-14983][table-common] Add interfaces for input type inference

[GitBox <gi...@apache.org>]

twalthr opened a new pull request #10368: [FLINK-14983][table-common] Add interfaces for input type inference
URL: https://github.com/apache/flink/pull/10368
 
 
   ## What is the purpose of the change
   
   This adds a similar class as Calcite's `SqlOperandTypeInference` to Flink's type inference.
   
   For FLIP-65, we will need to implement those interfaces as the planner needs infer the `DataType`s out of logical types that come from the logical query. This is also beneficial to support the NULL literal in the future.
   
   ## Brief change log
   
   - Introduction of `InputTypeStrategy`
   - Update of the `TypeInferenceUtil`
   - Integration into `ResolveCallByArgumentsRule` (not used yet)
   - Implementation of built-in `InputTypeStrategies`
   
   ## Verifying this change
   
   This change added tests and can be verified as follows: `InputTypeStrategiesTest`
   
   ## 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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