move DataAPI compatibility in main file

Author: Pietro Vertechi

src/StructArrays.jl

@@ -10,13 +10,21 @@ export replace_storage
 include("interface.jl")
 include("structarray.jl")
 include("utils.jl")
-include("refarray.jl")
 include("collect.jl")
 include("sort.jl")
 include("groupjoin.jl")
 include("lazy.jl")
 include("tables.jl")
 
+# Implement refarray and refvalue to deal with pooled arrays and weakrefstrings effectively
+import DataAPI: refarray, refvalue
+
+refarray(s::StructArray) = StructArray(map(refarray, fieldarrays(s)))
+
+function refvalue(s::StructArray{T}, v::Tup) where {T}
+    createinstance(T, map(refvalue, fieldarrays(s), v)...)
+end
+
 # Use Adapt allows for automatic conversion of CPU to GPU StructArrays
 import Adapt
 Adapt.adapt_structure(to, s::StructArray) = replace_storage(x->Adapt.adapt(to, x), s)