fix(rust): Allow full-null Object series to be built (#17870)

pola-rs · Jul 25, 2024 · 069ae8c · 069ae8c
1 parent 54b7fb8
commit 069ae8c
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/crates/polars-core/src/series/ops/null.rs b/crates/polars-core/src/series/ops/null.rs
@@ -1,3 +1,5 @@
+#[cfg(feature = "object")]
+use crate::chunked_array::object::registry::get_object_builder;
 use crate::prelude::*;
 
 impl Series {
@@ -60,6 +62,14 @@ impl Series {
                 let dtype = kind.materialize().expect("expected known type");
                 Series::full_null(name, size, &dtype)
             },
+            #[cfg(feature = "object")]
+            DataType::Object(_, _) => {
+                let mut builder = get_object_builder(name, size);
+                for _ in 0..size {
+                    builder.append_null();
+                }
+                builder.to_series()
+            },
             _ => {
                 macro_rules! primitive {
                     ($type:ty) => {{