twalthr commented on a change in pull request #11280: [FLINK-16377][table]
Support inline user defined functions in expression dsl
URL: https://github.com/apache/flink/pull/11280#discussion_r397251630
##########
File path:
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/operations/utils/OperationTreeBuilder.java
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@@ -471,9 +471,14 @@ public QueryOperation flatMap(Expression tableFunction,
QueryOperation child) {
throw new ValidationException("Only a table function
can be used in the flatMap operator.");
}
- TypeInformation<?> resultType = ((TableFunctionDefinition)
((UnresolvedCallExpression) resolvedTableFunction)
- .getFunctionDefinition())
- .getResultType();
+ FunctionDefinition functionDefinition =
((UnresolvedCallExpression) resolvedTableFunction)
+ .getFunctionDefinition();
+ if (!(functionDefinition instanceof TableFunctionDefinition)) {
Review comment:
please add a follow-up issue in FLINK-13191
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