jorisvandenbossche commented on code in PR #14326:
URL: https://github.com/apache/arrow/pull/14326#discussion_r998212310
##########
cpp/src/arrow/dataset/scanner_test.cc:
##########
@@ -1074,6 +1074,24 @@ TEST_P(TestScanner, ProjectedScanNested) {
AssertScanBatchesUnorderedEqualRepetitionsOf(MakeScanner(batch_in),
batch_out);
}
+TEST_P(TestScanner, ProjectedScanNestedFromNames) {
+ SetSchema({
+ field("struct", struct_({field("i32", int32()), field("f64",
float64())})),
+ field("nested", struct_({field("left", int32()),
+ field("right", struct_({field("i32", int32()),
+ field("f64",
float64())}))})),
+ });
+ ASSERT_OK_AND_ASSIGN(auto descr,
+ ProjectionDescr::FromNames({"struct.i32",
"nested.right.f64"},
+ *options_->dataset_schema))
+ SetProjection(options_.get(), std::move(descr));
+ auto batch_in = ConstantArrayGenerator::Zeroes(GetParam().items_per_batch,
schema_);
+ auto batch_out = ConstantArrayGenerator::Zeroes(
+ GetParam().items_per_batch,
+ schema({field("struct.i32", int32()), field("nested.right.f64",
float64())}));
Review Comment:
But the name gets set in `ProjectionDescr::FromNames`, no? (this PR is
currently not touching any python, except for a test)
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