[jira] [Created] (FLINK-1971) Add user function type to StreamOperator

[Shang Yuanchun (Jira)]

Aljoscha Krettek created FLINK-1971:
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             Summary: Add user function type to StreamOperator
                 Key: FLINK-1971
                 URL: https://issues.apache.org/jira/browse/FLINK-1971
             Project: Flink
          Issue Type: Improvement
            Reporter: Aljoscha Krettek
            Assignee: Aljoscha Krettek
            Priority: Minor


Right now, StreamOperator has a field userFunction of type Function. If we specialise this using an additional generic parameter then the derived stream operators don't need to use manual casting every time they access the user function.



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