Merge branch 'master' of https://github.com/queryverse/FeatherLib.jl

queryverse · Nov 24, 2018 · e2fe2a4 · e2fe2a4
2 parents 3517714 + 7238a08
commit e2fe2a4
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/src/metadata.jl b/src/metadata.jl
@@ -143,7 +143,13 @@ function juliatype(col::Metadata.Column)
     col.values.null_count == 0 ? T : Union{T,Missing}
 end
 
-feathertype(::Type{T}) where T = METADATA_TYPE_DICT[T]
+function feathertype(::Type{T}) where T
+    if !haskey(METADATA_TYPE_DICT, T)
+        throw(ArgumentError("Type $T is not supported by the Feather format."))
+    else
+        return METADATA_TYPE_DICT[T]
+    end
+end
 feathertype(::Type{Union{T,Missing}}) where T = feathertype(T)
 feathertype(::Type{<:Arrow.Datestamp}) = Metadata.INT32
 feathertype(::Type{<:Arrow.Timestamp}) = Metadata.INT64