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Otto Fowler commented on NIFI-7055: ----------------------------------- I have a fix, if we want to treat "," as an empty, therefore invalid entry. But I'd like some other opinions on the correctness of this. > createListValidator returns valid for empty list with "," input > --------------------------------------------------------------- > > Key: NIFI-7055 > URL: https://issues.apache.org/jira/browse/NIFI-7055 > Project: Apache NiFi > Issue Type: Bug > Reporter: Otto Fowler > Assignee: Otto Fowler > Priority: Major > > from Slack: > <wouter.devr...@tesorion.nl> > "I'm looking at the createListValidator, and to my surprise passing in a list > of (essentially) two empty elements "," validates, while a totally empty > string "" does not. Apparently due to some underlying behavior of > String.split." > The string "," does return a String[0] from split. This should fail > validation as if here were no elements as null, "", " " do possibly. > But that kind of goes against or doesn't consider the ignore empty entries. > I think the difference is whether or not you consider "," to be a list of two > empty elements or an empty list. > The current implementation with String.spilt() will produce an empty list. > Is that correct? -- This message was sent by Atlassian Jira (v8.3.4#803005)