Jing Zhang created FLINK-12810:
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Summary: Support to run a TableAPI query like 'table.select('a,
'b, 'c)'
Key: FLINK-12810
URL: https://issues.apache.org/jira/browse/FLINK-12810
Project: Flink
Issue Type: Task
Reporter: Jing Zhang
Support to run a TableAPI query like 'table.select('a, 'b, 'c)', including:
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
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