[
https://issues.apache.org/jira/browse/ARROW-3478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Wolf Vollprecht closed ARROW-3478.
----------------------------------
Resolution: Fixed
> [C++] API add value / null mask buffer accessor to ArrayData
> ------------------------------------------------------------
>
> Key: ARROW-3478
> URL: https://issues.apache.org/jira/browse/ARROW-3478
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wolf Vollprecht
> Priority: Minor
>
> Currently, the ArrayData struct has the `std::vector<Buffer> buffers` member.
> The buffers will (from reading the code) either be [null_mask, data] or
> [data] (if the null mask does not exist).
> I'm not sure if there is an easy way to get the null mask reliably at the
> moment. If I am understanding correctly, the way to do it right now is to
> check if the vector has one or two elements, and then use `buffers[0]` as the
> null mask, and `buffers[1]` as the values.
> I also did not find information regarding this in the spec. So I am not sure
> if I can rely on this behavior in future versions of the library.
> I am wondering wether adding explicit API for this would make this more
> reliable.
>
> For example two more interface functions
> * `std::shared_ptr<Buffer> mask()`
> * `std::shared_ptr<Buffer> values()`
> Would make it easy for me to rely on the interface to "do the right thing".
>
> Or am I missing something?
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
