hackergin commented on code in PR #24183:
URL: https://github.com/apache/flink/pull/24183#discussion_r1468763844
##########
flink-table/flink-table-common/src/test/java/org/apache/flink/table/types/extraction/TypeInferenceExtractorTest.java:
##########
@@ -1810,4 +1844,30 @@ public String eval(String f1, String f2) {
return "";
}
}
+
+ private static class ArgumentHintScalarFunctionNotNullTypeWithOptionals
extends ScalarFunction {
+ @FunctionHint(
+ argument = {
+ @ArgumentHint(
+ type = @DataTypeHint("STRING NOT NULL"),
+ name = "f1",
+ isOptional = true),
+ @ArgumentHint(type = @DataTypeHint("INTEGER"), name =
"f2", isOptional = true)
+ })
+ public String eval(String f1, Integer f2) {
Review Comment:
After verification, there will be a NullPointerException during execution. I
have added relevant detection and judgment, but this may not only be an
optional issue. If the primitive is declared as a nullable type, there may be
similar problems, but currently there is no similar detection. However, in
order to avoid modifying the existing Function temporarily, I have not made any
changes to this part. In the future, a separate JIRA can be created to track
this issue.
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