beyond1920 opened a new pull request #8697: [FLINK-12810][table-planner-blink]
Support to run a TableAPI query like 'table.select('a, 'b, 'c)'
URL: https://github.com/apache/flink/pull/8697
## What is the purpose of the change
The pr aims to support to run a TableAPI query like 'table.select('a, 'b,
'c)'
## Brief change log
1. add RexNodeConverter to convert Expression to RexNode
2. Introduce RexPlannerExpression to wraps a RexNode, which is similar to
RexPlannerExpression in flink-planner module.
3. add QueryOperationConverter to convert QueryOperation tree to RelNode
4. Introduce PlannerQueryOperation to wraps a RelNode in QueryOperation,
which is similar to PlannerQueryOperation in flink-planner module.
5. add OperationTreeBuilder and relative classes(ExpressionResolver,
TableReferenceLookup, FieldReferenceLoopup, ExpandColumnFunctionsRule,
LookupCallByNameRule, ResolverRule, StarReferenceFlattingRule,
VerifyNoUnresolvedExpressionRule), which is almost copy from flink-planner
module to blink-planner module, except that we remove dependency on
PlannerExpression. *Note: This is temporal solution, since OperationTreeBuilder
will be moved to api module finally.*
6. add implicit conversion in expressionDsl
## Verifying this change
ITCase
## 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)`: (no)
- 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? (no)
- If yes, how is the feature documented? (not applicable)
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