[jira] [Created] (FLINK-4575) DataSet aggregate methods should support POJOs

[Shang Yuanchun (Jira)]

Gabor Gevay created FLINK-4575:
----------------------------------

             Summary: DataSet aggregate methods should support POJOs
                 Key: FLINK-4575
                 URL: https://issues.apache.org/jira/browse/FLINK-4575
             Project: Flink
          Issue Type: Improvement
          Components: DataSet API
            Reporter: Gabor Gevay
            Priority: Minor


The aggregate methods of DataSets (aggregate, sum, min, max) currently only support Tuples, with the fields specified by indices. With https://issues.apache.org/jira/browse/FLINK-3702 resolved, adding support for POJOs and field expressions would be easy: {{AggregateOperator}} would create {{FieldAccessors}} instead of just storing field positions, and {{AggregateOperator.AggregatingUdf}} would use these {{FieldAccessors}} instead of the Tuple field access methods.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)