fsk119 commented on code in PR #21577: URL: https://github.com/apache/flink/pull/21577#discussion_r1060260536
########## flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/operations/AlterSchemaConverter.java: ########## @@ -698,7 +782,7 @@ private AlterSchemaStrategy computeAlterSchemaStrategy(SqlAlterTableSchema alter alterTableSchema.getClass().getCanonicalName())); } - private static <T> T unwrap(Optional<T> value) { + private <T> T unwrap(Optional<T> value) { Review Comment: ModifySchemaConverter and AddSchemaConverter are both static classes and can only use static methods in the parent class. But now I change them to class-level inner class, so I think we can remove the static keyword now. BTW, I think we should narrow the scope of the visibility. With the `static` keyword, the visibility is much larger. WDYT? -- 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