Github user twalthr commented on the issue:
https://github.com/apache/flink/pull/4111
@sunjincheng121 Sorry, that I haven't responded earlier. I was on vacation
last week. I found a solution that requires less CodeGenerator changes. I found
several issues (also regarding Java expression parsing). I will open a PR
shortly. We can test the PR, with the test cases of this PR.
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