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%% Copyright (c) 2023 Peter Morgan <peter.james.morgan@gmail.com> |
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%% |
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%% Licensed under the Apache License, Version 2.0 (the "License"); |
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%% you may not use this file except in compliance with the License. |
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%% You may obtain a copy of the License at |
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%% |
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%% http://www.apache.org/licenses/LICENSE-2.0 |
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%% |
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%% Unless required by applicable law or agreed to in writing, software |
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%% distributed under the License is distributed on an "AS IS" BASIS, |
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%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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%% See the License for the specific language governing permissions and |
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%% limitations under the License. |
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-module(msmp_com_stmt_execute). |
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-export([encode/1]). |
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command() -> |
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:-( |
<<16#17>>. |
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encode(#{query_attributes := QueryAttributes}) -> |
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:-( |
fun |
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(Decoded) -> |
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:-( |
(narcs_sequence:sequence( |
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[narcs_bytes:tag(command()), |
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narcs_combinator:v( |
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statement_id, |
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msmp_integer_fixed:encode(4)), |
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narcs_combinator:v( |
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flags, |
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msmp_integer_fixed:encode(1)), |
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narcs_combinator:v( |
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iteration_count, |
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msmp_integer_fixed:encode(4)), |
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narcs_combinator:condition( |
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QueryAttributes, |
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narcs_combinator:v( |
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parameters, |
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narcs_combinator:map_result( |
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fun |
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(Parameters) -> |
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:-( |
length(Parameters) |
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end, |
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msmp_integer_variable:encode()))), |
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narcs_combinator:v( |
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parameters, |
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msmp_null_bitmap:encode()), |
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narcs_combinator:v( |
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new_params_bind_flag, |
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msmp_integer_fixed:encode(1)), |
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types(), |
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narcs_combinator:condition( |
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QueryAttributes, |
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names()), |
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values()]))(Decoded) |
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end. |
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types() -> |
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:-( |
fun |
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(#{types := Types, parameters := Parameters}) -> |
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:-( |
lists:map( |
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fun |
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({#{type := Type, flags := #{unsigned := Unsigned}}, Value}) -> |
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:-( |
[msmp_field:lookup(type(Type, Value)), |
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case Unsigned of |
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true -> |
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:-( |
16#80; |
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false -> |
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:-( |
0 |
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end] |
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end, |
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lists:zip(Types, Parameters)) |
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end. |
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names() -> |
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:-( |
fun |
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(#{types := Types}) -> |
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:-( |
lists:map( |
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fun |
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(#{name := Name}) -> |
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:-( |
(msmp_string_length_encoded:encode())(Name) |
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end, |
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Types) |
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end. |
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values() -> |
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:-( |
fun |
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(#{types := Types, parameters := Parameters}) -> |
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:-( |
lists:filtermap( |
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fun |
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({_, null}) -> |
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:-( |
false; |
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({Definition, Parameter}) -> |
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:-( |
{true, |
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(msmp_binary:encode( |
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type(Definition, Parameter))) |
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(Parameter)} |
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end, |
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lists:zip(Types, Parameters)) |
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end. |
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type(#{type := null = Type} = Definition, Parameter) -> |
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:-( |
Definition#{type := type(Type, Parameter)}; |
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type(#{type := _} = Definition, _) -> |
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:-( |
Definition; |
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type(null, Parameter) when is_integer(Parameter) -> |
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:-( |
longlong; |
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type(null, Parameter) when is_float(Parameter) -> |
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:-( |
double; |
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type(null, Parameter) when is_binary(Parameter) -> |
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:-( |
varchar; |
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type(Type, _) when is_atom(Type) -> |
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:-( |
Type. |