[GitHub] [flink] dawidwys opened a new pull request #8585: [FLINK-12690][table-api] Introduce a Planner interface

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

dawidwys opened a new pull request #8585:  [FLINK-12690][table-api] Introduce a Planner interface 
URL: https://github.com/apache/flink/pull/8585
 
 
   ## What is the purpose of the change
   
   This PR introduces the `Planner` interface that should serve as a bridge between API and planner modules. 
   
   ## Brief change log
   
     - 9a8ae5a - this commit moves the `StreamTransformation` from flink-streaming to flink-core. This is necessary so that we do not add dependency on flink-streaming to flink-table-api
     - Added `Planner` interface that defines methods to parse sql statements and convert relational `TableOperation` program to `StreamTransformations`
     - Introduced ModiyTableOperations which definy a way to exit the Table ecosystem. This way we can provide either `TableSink` to emit to or the expected type information of the produced `StreamTransformations`
   
   ## Verifying this change
   
   This change introduces only new interface that are not used yet, therefore no tests are added.
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (**yes** / no)
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**)
     - The serializers: (yes / **no** / don't know)
     - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know)
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know)
     - The S3 file system connector: (yes / **no /** don't know)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (yes / **no**)
     - If yes, how is the feature documented? (**not applicable** / docs / JavaDocs / not documented)
   

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