[FLINK-25990] Expose uid generator for DataStream/Transformation providers

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.15.0
• Component/s: Table SQL / API
• Labels: pull-request-available
• Release Note: DataStreamScanProvider and DataStreamSinkProvider for table connectors received an additional method that might break implementations that used lambdas before. We recommend static classes as a replacement and future robustness.
• Assignee: Francesco Guardiani
• Reporter: Timo Walther
• Created: 07/Feb/22 17:26
• Updated: 11/Feb/22 15:17
• Resolved: 11/Feb/22 15:17

Description

The following providers can create more than one transformation and are thus kind of a black block for the planner:

• TransformationScanProvider
• DataStreamScanProvider
• DataStreamSinkProvider
• TransformationSinkProvider

We should add a context to `TransformationScanProvider#createTransformation` and `DataStreamScanProvider#produceDataStream`.

Issue Links

• links to: GitHub Pull Request #18667