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@@ -1,172 +0,0 @@
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-%%% Copyright (C) 2008 - Will Glozer. All rights reserved.
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-
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--module(pgsql_binary).
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-
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--export([encode/2, decode/2, supports/1]).
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-
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--include("pgsql_binary.hrl").
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-
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--define(datetime, (get(datetime_mod))).
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-
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-encode(_Any, null) -> <<-1:?int32>>;
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-encode(bool, true) -> <<1:?int32, 1:1/big-signed-unit:8>>;
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-encode(bool, false) -> <<1:?int32, 0:1/big-signed-unit:8>>;
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-encode(int2, N) -> <<2:?int32, N:1/big-signed-unit:16>>;
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-encode(int4, N) -> <<4:?int32, N:1/big-signed-unit:32>>;
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-encode(int8, N) -> <<8:?int32, N:1/big-signed-unit:64>>;
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-encode(float4, N) -> <<4:?int32, N:1/big-float-unit:32>>;
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-encode(float8, N) -> <<8:?int32, N:1/big-float-unit:64>>;
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-encode(bpchar, C) when is_integer(C) -> <<1:?int32, C:1/big-unsigned-unit:8>>;
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-encode(bpchar, B) when is_binary(B) -> <<(byte_size(B)):?int32, B/binary>>;
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-encode(time = Type, B) -> ?datetime:encode(Type, B);
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-encode(timetz = Type, B) -> ?datetime:encode(Type, B);
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-encode(date = Type, B) -> ?datetime:encode(Type, B);
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-encode(timestamp = Type, B) -> ?datetime:encode(Type, B);
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-encode(timestamptz = Type, B) -> ?datetime:encode(Type, B);
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-encode(interval = Type, B) -> ?datetime:encode(Type, B);
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-encode(bytea, B) when is_binary(B) -> <<(byte_size(B)):?int32, B/binary>>;
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-encode(text, B) when is_binary(B) -> <<(byte_size(B)):?int32, B/binary>>;
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-encode(varchar, B) when is_binary(B) -> <<(byte_size(B)):?int32, B/binary>>;
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-encode(uuid, B) when is_binary(B) -> encode_uuid(B);
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-encode({array, char}, L) when is_list(L) -> encode_array(bpchar, L);
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-encode({array, Type}, L) when is_list(L) -> encode_array(Type, L);
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-encode(point, {X,Y}) -> encode_point({X,Y});
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-encode(geometry, Data) -> encode_geometry(Data);
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-encode(Type, L) when is_list(L) -> encode(Type, list_to_binary(L));
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-encode(_Type, _Value) -> {error, unsupported}.
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-
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-decode(bool, <<1:1/big-signed-unit:8>>) -> true;
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-decode(bool, <<0:1/big-signed-unit:8>>) -> false;
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-decode(bpchar, <<C:1/big-unsigned-unit:8>>) -> C;
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-decode(int2, <<N:1/big-signed-unit:16>>) -> N;
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-decode(int4, <<N:1/big-signed-unit:32>>) -> N;
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-decode(int8, <<N:1/big-signed-unit:64>>) -> N;
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-decode(float4, <<N:1/big-float-unit:32>>) -> N;
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-decode(float8, <<N:1/big-float-unit:64>>) -> N;
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-decode(record, <<_:?int32, Rest/binary>>) -> list_to_tuple(decode_record(Rest, []));
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-decode(time = Type, B) -> ?datetime:decode(Type, B);
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-decode(timetz = Type, B) -> ?datetime:decode(Type, B);
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-decode(date = Type, B) -> ?datetime:decode(Type, B);
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-decode(timestamp = Type, B) -> ?datetime:decode(Type, B);
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-decode(timestamptz = Type, B) -> ?datetime:decode(Type, B);
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-decode(interval = Type, B) -> ?datetime:decode(Type, B);
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-decode(uuid, B) -> decode_uuid(B);
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-decode({array, _Type}, B) -> decode_array(B);
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-decode(point, B) -> decode_point(B);
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-decode(geometry, B) -> ewkb:decode_geometry(B);
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-decode(_Other, Bin) -> Bin.
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-
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-encode_array(Type, A) ->
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- {Data, {NDims, Lengths}} = encode_array(Type, A, 0, []),
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- Oid = pgsql_types:type2oid(Type),
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- Lens = [<<N:?int32, 1:?int32>> || N <- lists:reverse(Lengths)],
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- Hdr = <<NDims:?int32, 0:?int32, Oid:?int32>>,
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- Bin = iolist_to_binary([Hdr, Lens, Data]),
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- <<(byte_size(Bin)):?int32, Bin/binary>>.
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-
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-encode_array(_Type, [], NDims, Lengths) ->
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- {<<>>, {NDims, Lengths}};
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-encode_array(Type, [H | _] = Array, NDims, Lengths) when not is_list(H) ->
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- F = fun(E, Len) -> {encode(Type, E), Len + 1} end,
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- {Data, Len} = lists:mapfoldl(F, 0, Array),
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- {Data, {NDims + 1, [Len | Lengths]}};
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-encode_array(uuid, [_H | _] = Array, NDims, Lengths) ->
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- F = fun(E, Len) -> {encode(uuid, E), Len + 1} end,
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- {Data, Len} = lists:mapfoldl(F, 0, Array),
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- {Data, {NDims + 1, [Len | Lengths]}};
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-encode_array(Type, Array, NDims, Lengths) ->
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- Lengths2 = [length(Array) | Lengths],
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- F = fun(A2, {_NDims, _Lengths}) -> encode_array(Type, A2, NDims, Lengths2) end,
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- {Data, {NDims2, Lengths3}} = lists:mapfoldl(F, {NDims, Lengths2}, Array),
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- {Data, {NDims2 + 1, Lengths3}}.
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-
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-encode_uuid(U) when is_binary(U) ->
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- encode_uuid(binary_to_list(U));
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-encode_uuid(U) ->
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- Hex = [H || H <- U, H =/= $-],
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- {ok, [Int], _} = io_lib:fread("~16u", Hex),
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- <<16:?int32,Int:128>>.
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-
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-decode_array(<<NDims:?int32, _HasNull:?int32, Oid:?int32, Rest/binary>>) ->
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- {Dims, Data} = erlang:split_binary(Rest, NDims * 2 * 4),
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- Lengths = [Len || <<Len:?int32, _LBound:?int32>> <= Dims],
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- Type = pgsql_types:oid2type(Oid),
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- {Array, <<>>} = decode_array(Data, Type, Lengths),
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- Array.
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-
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-decode_array(Data, _Type, []) ->
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- {[], Data};
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-decode_array(Data, Type, [Len]) ->
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- decode_elements(Data, Type, [], Len);
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-decode_array(Data, Type, [Len | T]) ->
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- F = fun(_N, Rest) -> decode_array(Rest, Type, T) end,
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- lists:mapfoldl(F, Data, lists:seq(1, Len)).
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-
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-decode_elements(Rest, _Type, Acc, 0) ->
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- {lists:reverse(Acc), Rest};
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-decode_elements(<<-1:?int32, Rest/binary>>, Type, Acc, N) ->
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- decode_elements(Rest, Type, [null | Acc], N - 1);
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-decode_elements(<<Len:?int32, Value:Len/binary, Rest/binary>>, Type, Acc, N) ->
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- Value2 = decode(Type, Value),
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- decode_elements(Rest, Type, [Value2 | Acc], N - 1).
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-
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-decode_record(<<>>, Acc) ->
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- lists:reverse(Acc);
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-decode_record(<<_Type:?int32, -1:?int32, Rest/binary>>, Acc) ->
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- decode_record(Rest, [null | Acc]);
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-decode_record(<<Type:?int32, Len:?int32, Value:Len/binary, Rest/binary>>, Acc) ->
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- Value2 = decode(pgsql_types:oid2type(Type), Value),
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- decode_record(Rest, [Value2 | Acc]).
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-
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-decode_uuid(<<U0:32, U1:16, U2:16, U3:16, U4:48>>) ->
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- Format = "~8.16.0b-~4.16.0b-~4.16.0b-~4.16.0b-~12.16.0b",
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- iolist_to_binary(io_lib:format(Format, [U0, U1, U2, U3, U4])).
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-
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-encode_point({X, Y}) when is_number(X), is_number(Y) ->
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- <<X:1/big-float-unit:64, Y:1/big-float-unit:64>>.
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-
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-decode_point(<<X:1/big-float-unit:64, Y:1/big-float-unit:64>>) ->
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- {X, Y}.
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-
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-encode_geometry(Data) ->
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- Bin = ewkb:encode_geometry(Data),
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- Size = byte_size(Bin),
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- <<Size:?int32, Bin/binary>>.
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-
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-supports(geometry) -> true;
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-supports(point) -> true;
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-supports(bool) -> true;
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-supports(bpchar) -> true;
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-supports(int2) -> true;
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-supports(int4) -> true;
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-supports(int8) -> true;
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-supports(float4) -> true;
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-supports(float8) -> true;
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-supports(bytea) -> true;
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-supports(text) -> true;
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-supports(varchar) -> true;
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-supports(record) -> true;
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-supports(date) -> true;
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-supports(time) -> true;
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-supports(timetz) -> true;
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-supports(timestamp) -> true;
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-supports(timestamptz) -> true;
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-supports(interval) -> true;
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-supports(uuid) -> true;
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-supports({array, bool}) -> true;
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-supports({array, int2}) -> true;
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-supports({array, int4}) -> true;
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-supports({array, int8}) -> true;
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-supports({array, float4}) -> true;
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-supports({array, float8}) -> true;
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-supports({array, char}) -> true;
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-supports({array, text}) -> true;
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-supports({array, date}) -> true;
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-supports({array, time}) -> true;
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-supports({array, timetz}) -> true;
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-supports({array, timestamp}) -> true;
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-supports({array, timestamptz}) -> true;
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-supports({array, interval}) -> true;
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-supports({array, varchar}) -> true;
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-supports({array, uuid}) -> true;
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-supports(_Type) -> false.
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