sunjincheng121 commented on a change in pull request #9748:
[FLINK-14016][python][flink-table-planner] Introduce DataStreamPythonCalc for
Python function execution
URL: https://github.com/apache/flink/pull/9748#discussion_r332333999
##########
File path:
flink-table/flink-table-common/src/main/java/org/apache/flink/table/functions/FunctionDefinition.java
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@@ -40,6 +40,13 @@
*/
FunctionKind getKind();
+ /**
+ * Returns the language of function this definition describes.
+ */
+ default FunctionLanguage getLanguage() {
Review comment:
+1. If we add the `PythonFunction` interface for Python, I think
`getLanguage()` can be removed.
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