[GitHub] [arrow-julia] quinnj commented on a diff in pull request #419: fix `Vector{UInt8}` writing

["quinnj (via GitHub)" <gi...@apache.org>]

quinnj commented on code in PR #419:
URL: https://github.com/apache/arrow-julia/pull/419#discussion_r1198274330


##########
src/eltypes.jl:
##########
@@ -393,23 +393,21 @@ end
 
 # arrowtype will call fieldoffset recursively for children
 function arrowtype(b, x::List{T, O, A}) where {T, O, A}
-    if eltype(A) == UInt8
-        if T <: AbstractString || T <: Union{AbstractString, Missing}
-            if O == Int32
-                Meta.utf8Start(b)
-                return Meta.Utf8, Meta.utf8End(b), nothing
-            else # if O == Int64
-                Meta.largUtf8Start(b)
-                return Meta.LargeUtf8, Meta.largUtf8End(b), nothing
-            end
-        else # if Vector{UInt8}
-            if O == Int32
-                Meta.binaryStart(b)
-                return Meta.Binary, Meta.binaryEnd(b), nothing
-            else # if O == Int64
-                Meta.largeBinaryStart(b)
-                return Meta.LargeBinary, Meta.largeBinaryEnd(b), nothing
-            end
+    if eltype(A) == UInt8 && T <: AbstractString || T <: Union{AbstractString, Missing}
+        if O == Int32
+            Meta.utf8Start(b)
+            return Meta.Utf8, Meta.utf8End(b), nothing
+        else # if O == Int64
+            Meta.largUtf8Start(b)
+            return Meta.LargeUtf8, Meta.largUtf8End(b), nothing
+        end
+    elseif eltype(A) == UInt8 && ArrowTypes.isstringtype(T)

Review Comment:
   What does "cathed" mean?



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