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PostgreSQL driver for Elixir
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lib/postgrex/extensions/oid.ex
defmodule Postgrex.Extensions.OID do
@moduledoc false
@oid_senders ~w(oidsend regprocsend regproceduresend regopersend
regoperatorsend regclasssend regtypesend xidsend cidsend)
import Postgrex.BinaryUtils, warn: false
use Postgrex.BinaryExtension, Enum.map(@oid_senders, &{:send, &1})
@oid_range 0..4_294_967_295
def encode(_) do
range = Macro.escape(@oid_range)
quote location: :keep do
oid when is_integer(oid) and oid in unquote(range) ->
<<4 :: int32, oid :: uint32>>
binary when is_binary(binary) ->
msg = "you tried to use a binary for an oid type " <>
"(#{binary}) when an integer was expected. See " <>
"https://github.com/elixir-ecto/postgrex#oid-type-encoding"
raise ArgumentError, msg
other ->
raise DBConnection.EncodeError, Postgrex.Utils.encode_msg(other, unquote(range))
end
end
def decode(_) do
quote location: :keep do
<<4 :: int32, oid :: uint32>> -> oid
end
end
end