From 46e7f38af71ed701815593f4b6327ceb464d3686 Mon Sep 17 00:00:00 2001
From: Benedikt Reinartz <filmor@gmail.com>
Date: Tue, 5 Nov 2024 17:02:27 +0100
Subject: [PATCH] GH-23995: [C#] Make PrimitiveArrayBuilder constructor public
 (#44596)

Fixes #23995.

Making these constructors `public` allows for writing custom builders.

### Rationale for this change

Allows for writing custom builders.

### What changes are included in this PR?

Only change of visibility on the default constructors of `PrimitiveArrayBuilder`.

### Are these changes tested?

There is not much to test :)

### Are there any user-facing changes?

See above.

* GitHub Issue: #23995

Authored-by: Benedikt Reinartz <filmor@gmail.com>
Signed-off-by: Curt Hagenlocher <curt@hagenlocher.org>
---
 csharp/src/Apache.Arrow/Arrays/PrimitiveArrayBuilder.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/csharp/src/Apache.Arrow/Arrays/PrimitiveArrayBuilder.cs b/csharp/src/Apache.Arrow/Arrays/PrimitiveArrayBuilder.cs
index ae02173fb0df4..b3583842c1ed2 100644
--- a/csharp/src/Apache.Arrow/Arrays/PrimitiveArrayBuilder.cs
+++ b/csharp/src/Apache.Arrow/Arrays/PrimitiveArrayBuilder.cs
@@ -30,7 +30,7 @@ public abstract class PrimitiveArrayBuilder<TFrom, TTo, TArray, TBuilder> : IArr
 
         public int Length => ArrayBuilder.Length;
 
-        internal PrimitiveArrayBuilder(IArrowArrayBuilder<TTo, TArray, IArrowArrayBuilder<TArray>> builder)
+        public PrimitiveArrayBuilder(IArrowArrayBuilder<TTo, TArray, IArrowArrayBuilder<TArray>> builder)
         {
             ArrayBuilder = builder ?? throw new ArgumentNullException(nameof(builder));
         }
@@ -110,7 +110,7 @@ public abstract class PrimitiveArrayBuilder<T, TArray, TBuilder> : IArrowArrayBu
         public int Length => ValueBuffer.Length;
         protected int NullCount => ValidityBuffer.UnsetBitCount;
 
-        internal PrimitiveArrayBuilder()
+        public PrimitiveArrayBuilder()
         {
             ValueBuffer = new ArrowBuffer.Builder<T>();
             ValidityBuffer = new ArrowBuffer.BitmapBuilder();