Wolf Vollprecht created ARROW-3478: -------------------------------------- Summary: [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
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)