kosiew commented on code in PR #20840:
URL: https://github.com/apache/datafusion/pull/20840#discussion_r2993725530
##########
datafusion/core/tests/parquet/expr_adapter.rs:
##########
@@ -54,6 +56,399 @@ async fn write_parquet(batch: RecordBatch, store: Arc<dyn
ObjectStore>, path: &s
store.put(&Path::from(path), data.into()).await.unwrap();
}
+#[derive(Debug, Clone, Copy)]
+enum NestedListKind {
+ List,
+ LargeList,
+}
+
+impl NestedListKind {
+ fn field_data_type(self, item_field: Arc<Field>) -> DataType {
+ match self {
+ Self::List => DataType::List(item_field),
+ Self::LargeList => DataType::LargeList(item_field),
+ }
+ }
+
+ fn array(
+ self,
+ item_field: Arc<Field>,
+ lengths: Vec<usize>,
+ values: ArrayRef,
+ ) -> ArrayRef {
+ match self {
+ Self::List => Arc::new(ListArray::new(
+ item_field,
+ OffsetBuffer::<i32>::from_lengths(lengths),
+ values,
+ None,
+ )),
+ Self::LargeList => Arc::new(LargeListArray::new(
+ item_field,
+ OffsetBuffer::<i64>::from_lengths(lengths),
+ values,
+ None,
+ )),
+ }
+ }
+
+ fn name(self) -> &'static str {
+ match self {
+ Self::List => "list",
+ Self::LargeList => "large_list",
+ }
+ }
+}
+
+#[derive(Debug)]
+struct MessageValue<'a> {
Review Comment:
Renamed to NestedMessageRow
It is `Fixture row for one nested struct element inside the `messages` list
column.`
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