Vibhatha Lakmal Abeykoon created ARROW-17648:
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Summary: [C++] Add ScanOptions to support projection and filter in
ToProto Read
Key: ARROW-17648
URL: https://issues.apache.org/jira/browse/ARROW-17648
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Vibhatha Lakmal Abeykoon
Assignee: Vibhatha Lakmal Abeykoon
In the current ToProto the `ScanOptions` are not fully supported, the `project`
and `filter` support needs to be added.
Ref:
{code:java}
Result<std::unique_ptr<substrait::ReadRel>> ScanRelationConverter(const
std::shared_ptr<Schema>& schema, const compute::Declaration& declaration,
ExtensionSet* ext_set, const ConversionOptions& conversion_options) {
auto read_rel = make_unique<substrait::ReadRel>();
const auto& scan_node_options = checked_cast<const
dataset::ScanNodeOptions&>(*declaration.options);
auto dataset =
dynamic_cast<dataset::FileSystemDataset*>(scan_node_options.dataset.get());
// TODO handle here{code}
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