From 3e1415201555bc7b60f606d9f4bcef376abcd415 Mon Sep 17 00:00:00 2001
From: Andrew Lamb <andrew@nerdnetworks.org>
Date: Thu, 15 Jan 2026 08:09:05 -0500
Subject: [PATCH] Avoid a clone when creating `NullArry` from ArrayData

---
 arrow-array/src/array/null_array.rs | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/arrow-array/src/array/null_array.rs b/arrow-array/src/array/null_array.rs
index b682466b6738..18c155b78bf4 100644
--- a/arrow-array/src/array/null_array.rs
+++ b/arrow-array/src/array/null_array.rs
@@ -138,21 +138,19 @@ impl Array for NullArray {
 
 impl From<ArrayData> for NullArray {
     fn from(data: ArrayData) -> Self {
+        let (data_type, len, nulls, _offset, buffers, _child_data) = data.into_parts();
+
         assert_eq!(
-            data.data_type(),
-            &DataType::Null,
+            data_type,
+            DataType::Null,
             "NullArray data type should be Null"
         );
-        assert_eq!(
-            data.buffers().len(),
-            0,
-            "NullArray data should contain 0 buffers"
-        );
+        assert_eq!(buffers.len(), 0, "NullArray data should contain 0 buffers");
         assert!(
-            data.nulls().is_none(),
+            nulls.is_none(),
             "NullArray data should not contain a null buffer, as no buffers are required"
         );
-        Self { len: data.len() }
+        Self { len }
     }
 }