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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