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https://issues.apache.org/jira/browse/FLINK-2692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14982859#comment-14982859
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ASF GitHub Bot commented on FLINK-2692:
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Github user zentol commented on the pull request:

    https://github.com/apache/flink/pull/1266#issuecomment-152584371
  
    We could move the differing lines (Csv:L114 Pojo:L218->L225) into separate 
methods that is called from a generic readRecord() method. something like 
fillRecord(OUT reuse, Object[] parsedValues).


> Untangle CsvInputFormat into PojoTypeCsvInputFormat and 
> TupleTypeCsvInputFormat 
> --------------------------------------------------------------------------------
>
>                 Key: FLINK-2692
>                 URL: https://issues.apache.org/jira/browse/FLINK-2692
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: Till Rohrmann
>            Assignee: Chesnay Schepler
>            Priority: Minor
>
> The {{CsvInputFormat}} currently allows to return values as a {{Tuple}} or a 
> {{Pojo}} type. As a consequence, the processing logic, which has to work for 
> both types, is overly complex. For example, the {{CsvInputFormat}} contains 
> fields which are only used when a Pojo is returned. Moreover, the pojo field 
> information are constructed by calling setter methods which have to be called 
> in a very specific order, otherwise they fail. E.g. one first has to call 
> {{setFieldTypes}} before calling {{setOrderOfPOJOFields}}, otherwise the 
> number of fields might be different. Furthermore, some of the methods can 
> only be called if the return type is a {{Pojo}} type, because they expect 
> that a {{PojoTypeInfo}} is present.
> I think the {{CsvInputFormat}} should be refactored to make the code more 
> easily maintainable. I propose to split it up into a 
> {{PojoTypeCsvInputFormat}} and a {{TupleTypeCsvInputFormat}} which take all 
> the required information via their constructors instead of using the 
> {{setFields}} and {{setOrderOfPOJOFields}} approach.



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