ASF GitHub Bot updated ARROW-1361:
    Labels: pull-request-available  (was: )

> [Java] Add minor type param accessors to NullableValueVectors
> -------------------------------------------------------------
>                 Key: ARROW-1361
>                 URL: https://issues.apache.org/jira/browse/ARROW-1361
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Java - Vectors
>            Reporter: Bryan Cutler
>            Assignee: Bryan Cutler
>            Priority: Major
>              Labels: pull-request-available
> A {{NullableValueVector}} creates private copies of each param in the minor 
> type, but does not have any way public api to access them.  So if given a 
> {{NullableValueVector}} you would have to use the {{Field}} and cast to the 
> correct type.  For example, with a {{NullableTimeStampMicroTZVector}} and 
> trying to get the timezone:
> {noformat}
> if field.getType.isInstanceOf[ArrowType.Timestamp] &&
>           field.getType.asInstanceOf[ArrowType.Timestamp].getTimezone
> {noformat}
> It would be more convenient to have direct accessors for these type params.  
> Also, it is possible to do some minor refactoring because 
> {{NullableValueVectors}} does not use these type params, so there is no need 
> to store them.  They already exist in the inner vector object and the Field 
> type.

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