Benjamin Kietzman created ARROW-6398:
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Summary: [C++] consolidate ScanOptions and ScanContext
Key: ARROW-6398
URL: https://issues.apache.org/jira/browse/ARROW-6398
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Benjamin Kietzman
Assignee: Benjamin Kietzman
Currently ScanOptions has two distinct responsibilities: it contains the data
selector (and eventually projection schema) for the current scan and it serves
as the base class for format specific scan options.
In addition, we have ScanContext which holds the memory pool for the current
scan.
I think these classes should be rearranged as follows: ScanOptions will be
removed and FileScanOptions will be the abstract base class for format specific
scan options. ScanContext will be a concrete struct and contain the data
selector, projection schema, a vector of FileScanOptions, and any other shared
scan state.
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