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Add Python FFI bindings for RecordBatchReader #633

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kylebarron opened this issue May 10, 2024 · 0 comments · Fixed by #637
Closed

Add Python FFI bindings for RecordBatchReader #633

kylebarron opened this issue May 10, 2024 · 0 comments · Fixed by #637

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@kylebarron
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and use that for writing from an ArrowArrayStream to various file formats.

Maybe in the future this can expand to further operations.
@kylebarron kylebarron mentioned this issue May 15, 2024
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kylebarron added a commit that referenced this issue May 15, 2024
@kylebarron
Implement python record batch reader (#637)
4a4fd78 
### Change list

- Adds Python `RecordBatchReader` class to store a stream of Arrow
record batches
- Implements `__arrow_c_stream__` for exporting a Rust stream of record
batches to Python
- Implements `FromPyObject` to read from an `__arrow_c_stream__`
- Updates geozero-based writers to read from the stream instead of from
a materialized table
- Updates writing Arrow IPC and IPC Stream to not materialize the table

Updating writing GeoParquet from a stream instead of a table is left for
future work.

Closes #633
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Implement python record batch reader geoarrow/geoarrow-rs
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@kylebarron