wjones127 opened a new issue, #187:
URL: https://github.com/apache/arrow-nanoarrow/issues/187
For users coming from Arrow C++ / PyArrow, it might not be obvious what
nanoarrow structures to create so they can export. Depending on the context, an
`ArrowSchema` can represent a data type, a field, or a schema. Similarly, an
`ArrowArray` can represent an array or record batch (tabular). To start, we
should show the correspondence between Nanoarrow structs and Arrow C++ types.
| Nanoarrow | Arrow C++ |
|----|----|
| `ArrowArray` | `arrow::Array` |
| `ArrowArray` where type is struct | `arrow::RecordBatch` |
| `std::vector<ArrowArray>` | `arrow::ChunkedArray` |
| `std::vector<ArrowArray>` where type is struct | `arrow::Table` |
| `ArrowSchema` | `arrow::DataType` |
| `ArrowSchema` | `arrow::Field` |
| `ArrowSchema` | `arrow::Schema` |
Then we may also want recipes for:
* How to build a struct array in nanoarrow, and export as an
`arrow::RecordBatch`
* How to build a record batch reader, and export as an `arrow::Table`.
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