[jira] [Created] (FLINK-11788) Support Code Generation for RexNode

[Shang Yuanchun (Jira)]

Jark Wu created FLINK-11788:
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             Summary: Support Code Generation for RexNode
                 Key: FLINK-11788
                 URL: https://issues.apache.org/jira/browse/FLINK-11788
             Project: Flink
          Issue Type: New Feature
          Components: API / Table SQL
            Reporter: Jark Wu
            Assignee: Jark Wu


Introduce {{CodeGeneratorContext}} and {{ExprCodeGenerator}} to support generation codes from RexNode.

The {{CodeGeneratorContext}} will keep all the reusable statements which will be the basic class for code generation. In the future, we will introduce {{FunctionCodeGeneration}}, {{AggregateCodeGeneration}}, etc... and they will depend on the {{CodeGeneratorContext}} to store reusable statements.

The {{ExprCodeGenerator}} will only do generating codes from RexNode.





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