hequn8128 edited a comment on issue #7976: [FLINK-11908][table] Port window classes into flink-api-java URL: https://github.com/apache/flink/pull/7976#issuecomment-473309642 @twalthr Sorry. I missed the important messages from you. Converting the ExpressionParser into an interface is a good solution. So we can port TumbleWithSize, TumbleWithSizeOnTime, etc. directly into api-java. This also performs a reflection step at just one location. Good idea! I will try to update the PR asap. Best, Hequn
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