dawidwys opened a new pull request #8634: 
[FLINK-12257][table-api][table-planner] Instantiate TableSource from 
CatalogTable
URL: https://github.com/apache/flink/pull/8634
 
 
   ## What is the purpose of the change
   
   The purpose is to create a `TableSource` out of properties extracted from 
`CatalogTable`
   
   ## Brief change log
   
   
     - Instantiating the `TableSource` in `DatabaseCalciteSchema`, the 
assumption is that you can instatiate only `StreamTableSource` out of 
`CatalogTable` (Batch tables for Blink planner will be a special kind of 
`BoundedTableSource`. The old `BatchTableSources` will not be supported.
   
   
   ## Verifying this change
   
   This change added test:
   * `DatabaseCalciteSchemaTest`
   
   ## 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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