Unknown type native array

rust/geoarrow/src/array/mod.rs

@@ -40,6 +40,7 @@ pub(crate) mod offset_builder;
 pub(crate) mod point;
 pub(crate) mod polygon;
 pub(crate) mod rect;
+pub(crate) mod unknown;
 pub(crate) mod util;
 pub(crate) mod wkt;
 

rust/geoarrow/src/array/unknown/array.rs

@@ -0,0 +1,14 @@
+use std::sync::Arc;
+
+use crate::array::metadata::ArrayMetadata;
+use crate::array::MixedGeometryArray;
+use crate::datatypes::NativeType;
+
+pub struct UnknownGeometryArray {
+    data_type: NativeType,
+
+    pub(crate) metadata: Arc<ArrayMetadata>,
+
+    xy: MixedGeometryArray,
+    xyz: MixedGeometryArray,
+}

rust/geoarrow/src/array/unknown/mod.rs

@@ -0,0 +1 @@
+pub(crate) mod array;

rust/geoarrow/src/datatypes.rs

@@ -127,6 +127,10 @@ pub enum NativeType {
     /// Represents a [RectArray][crate::array::RectArray] or
     /// [ChunkedRectArray][crate::chunked_array::ChunkedRectArray].
     Rect(Dimension),
+
+    /// Represents a [UnknownGeometryArray][crate::array::UnknownGeometryArray] or
+    /// [ChunkedUnknownGeometryArray][crate::chunked_array::ChunkedUnknownGeometryArray].
+    Unknown(CoordType),
 }
 
 /// A type enum representing "serialized" GeoArrow geometry types.