function toarrowtable()

in src/write.jl [508:556]

• 49 lines of code
• 2 McCabe index (conditional complexity)

function toarrowtable(
    cols,
    dictencodings,
    largelists,
    compress,
    denseunions,
    dictencode,
    dictencodenested,
    maxdepth,
    meta,
    colmeta,
)
    @debug "converting input table to arrow formatted columns"
    sch = Tables.schema(cols)
    types = collect(sch.types)
    N = length(types)
    newcols = Vector{Any}(undef, N)
    newtypes = Vector{Type}(undef, N)
    dictencodingdeltas = DictEncoding[]
    Tables.eachcolumn(sch, cols) do col, i, nm
        oldcolmeta = getmetadata(col)
        newcolmeta = isnothing(colmeta) ? oldcolmeta : get(colmeta, nm, oldcolmeta)
        newcol = toarrowvector(
            col,
            i,
            dictencodings,
            dictencodingdeltas,
            newcolmeta;
            compression=compress,
            largelists=largelists,
            denseunions=denseunions,
            dictencode=dictencode,
            dictencodenested=dictencodenested,
            maxdepth=maxdepth,
        )
        newtypes[i] = eltype(newcol)
        newcols[i] = newcol
    end
    minlen, maxlen = isempty(newcols) ? (0, 0) : extrema(length, newcols)
    minlen == maxlen ||
        throw(ArgumentError("columns with unequal lengths detected: $minlen < $maxlen"))
    meta = _normalizemeta(meta)
    return ToArrowTable(
        Tables.Schema(sch.names, newtypes),
        newcols,
        meta,
        dictencodingdeltas,
    )
end