fsk119 commented on code in PR #24183:
URL: https://github.com/apache/flink/pull/24183#discussion_r1469008084
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flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/extraction/FunctionSignatureTemplate.java:
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@@ -44,19 +45,24 @@ final class FunctionSignatureTemplate {
final @Nullable String[] argumentNames;
+ final @Nullable Boolean[] argumentOptionals;
Review Comment:
I think it's not related to InputStrategy here. `FunctionSignatureTemplate`
just a POJO object that describes the method. The current implementation is
counterintuitive and contradicts the way users utilize it.
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