Disallow copy and assign in ArrayBuilder

wesm · wesm · commit ab7611cfb01e · 2017-09-03T13:56:30.000-04:00
Change-Id: I5f690d47670ebdd6d03940603a4a64388a3ccdf9
diff --git a/cpp/src/arrow/builder.h b/cpp/src/arrow/builder.h
@@ -154,6 +154,9 @@ class ARROW_EXPORT ArrayBuilder {
   void UnsafeAppendToBitmap(const uint8_t* valid_bytes, int64_t length);
   // Set the next length bits to not null (i.e. valid).
   void UnsafeSetNotNull(int64_t length);
+
+ private:
+  ARROW_DISALLOW_COPY_AND_ASSIGN(ArrayBuilder);
 };
 
 class ARROW_EXPORT NullBuilder : public ArrayBuilder {
