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https://issues.apache.org/jira/browse/FLINK-13775?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jingsong Lee updated FLINK-13775:
---------------------------------
    Description: 
For subsequent development, refactor ExpressionConverter in the form of Rules.

Now the RexNodeConverter has 1000 lines, but these logic can do some better 
classification.

Later we will introduce more converter mode, refactoring can let us better 
maintain and modify.

  was:For subsequent development, refactor ExpressionConverter in the form of 
Rules.


> Refactor ExpressionConverter(RexNodeConverter) in blink
> -------------------------------------------------------
>
>                 Key: FLINK-13775
>                 URL: https://issues.apache.org/jira/browse/FLINK-13775
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / Planner
>            Reporter: Jingsong Lee
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.10.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> For subsequent development, refactor ExpressionConverter in the form of Rules.
> Now the RexNodeConverter has 1000 lines, but these logic can do some better 
> classification.
> Later we will introduce more converter mode, refactoring can let us better 
> maintain and modify.



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