xuyangzhong commented on code in PR #23684: URL: https://github.com/apache/flink/pull/23684#discussion_r1403213418
########## flink-table/flink-table-planner/src/test/java/org/apache/flink/table/planner/runtime/stream/sql/FunctionITCase.java: ########## @@ -1698,6 +1717,32 @@ public void eval(@DataTypeHint("STRING") StringData s) { } } + /** This is an empty synchronous table function. */ + private static class LookupTableLevel0Function<T> extends TableFunction<T> {} + + /** + * Synchronous table function that uses {@link RowData} type inference for {@link Review Comment: It seems not to use the RowData type inference, right? ########## flink-table/flink-table-planner/src/test/java/org/apache/flink/table/planner/runtime/stream/sql/FunctionITCase.java: ########## @@ -1698,6 +1717,32 @@ public void eval(@DataTypeHint("STRING") StringData s) { } } + /** This is an empty synchronous table function. */ + private static class LookupTableLevel0Function<T> extends TableFunction<T> {} + + /** + * Synchronous table function that uses {@link RowData} type inference for {@link + * LookupTableSource} and inherits {@link TableFunction} at multiple levels. + */ + public static class LookupTableWithoutHintLevel1Function Review Comment: Just curious, should we add a test like LookupTableWithHintLevel1Function for considerations about the test orthogonality? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org