godfrey he created FLINK-20512:
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Summary: Introduce getDescription, getOutputType, replaceInputEdge
methods for ExecNode
Key: FLINK-20512
URL: https://issues.apache.org/jira/browse/FLINK-20512
Project: Flink
Issue Type: Sub-task
Components: Table SQL / Planner
Reporter: godfrey he
We will introduce {{getDescription()}} method which returns the description
information of the ExecNode,
introduce {{getOutputType()}} method which returns the output {{RowType}} of
the ExecNode,
introduce {{replaceInputEdge(int ordinalInParent, ExecEdge newInputEdge)}}
method which can update the input edge at the given index.
Note: {{RelNode}} also has {{getDescription()}} method, so before we finish all
separation work, we will introduce {{getDesc()}} instead of
{{getDescription()}} to avoid compile error.
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