[R] creating arrow supported expressions

[JosiahParry]

Describe the usage question you have. Please include as many useful details as possible.

I'm working on creating R bindings to geoarrow-rs. These functions work with nanoarrow and {geoarrow}'s geoarrow_vctr class. I would like to also provide the ability to use these functions directly on an arrow Table, Dataset, RecordBatch, RecordBatchReader, etc.

When using my functions on these objects directly I get either:

Error in `centroid_()`:
! Expression not supported in Arrow

Is there any documentation on how to write functions such that they can be used directly on arrow objects? I'd like to encourage users of my package to use arrow objects whenever possible instead of collecting to in-memory data frames

Component(s)

R

[JosiahParry]

It appears that there was a vignette 3 versions ago on the subject but since register_binding() has been removed form the exports.

https://arrow.apache.org/docs/dev/r/articles/developers/writing_bindings.html

Though that vignette seems specific to C++ functions already available.

It would be great to have documentation that describes how to write functions that are compatible with arrow + dplyr.