bkietz commented on a change in pull request #9686:
URL: https://github.com/apache/arrow/pull/9686#discussion_r594377066
##########
File path: cpp/src/jni/dataset/jni_wrapper.cc
##########
@@ -431,13 +431,13 @@ JNIEXPORT jlong JNICALL
Java_org_apache_arrow_dataset_jni_JniWrapper_createScann
if (pool == nullptr) {
JniThrow("Memory pool does not exist or has been closed");
}
- std::shared_ptr<arrow::dataset::ScanContext> context =
- std::make_shared<arrow::dataset::ScanContext>();
- context->pool = pool;
+ std::shared_ptr<arrow::dataset::ScanOptions> options =
+ std::make_shared<arrow::dataset::ScanOptions>();
+ options->pool = pool;
std::shared_ptr<arrow::dataset::Dataset> dataset =
RetrieveNativeInstance<arrow::dataset::Dataset>(dataset_id);
std::shared_ptr<arrow::dataset::ScannerBuilder> scanner_builder =
- JniGetOrThrow(dataset->NewScan(context));
+ JniGetOrThrow(dataset->NewScan(options));
Review comment:
Instead of constructing ScanOptions above:
```suggestion
JniAssertOkOrThrow(scanner_builder->Pool(pool));
```
##########
File path: cpp/src/arrow/dataset/scanner.h
##########
@@ -198,10 +183,10 @@ class ARROW_DS_EXPORT Scanner {
class ARROW_DS_EXPORT ScannerBuilder {
public:
ScannerBuilder(std::shared_ptr<Dataset> dataset,
- std::shared_ptr<ScanContext> scan_context);
+ std::shared_ptr<ScanOptions> scan_options);
Review comment:
Is it worthwhile to require ScannerBuilder be constructed with this
`scan_options` argument? Maybe we could just have `explicit
ScannerBuilder(std::shared_ptr<Dataset>)` construct a defaulted ScanOptions
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