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%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(mod_caps_sql).
-behaviour(mod_caps).
-compile([{parse_transform, ejabberd_sql_pt}]).
%% API
-export([init/2, caps_read/2, caps_write/3, export/1]).
-include("mod_caps.hrl").
-include("ejabberd_sql_pt.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
ok.
caps_read(LServer, {Node, SubNode}) ->
case ejabberd_sql:sql_query(
LServer,
?SQL("select @(feature)s from caps_features where"
" node=%(Node)s and subnode=%(SubNode)s")) of
{selected, [{H}|_] = Fs} ->
case catch jlib:binary_to_integer(H) of
Int when is_integer(Int), Int>=0 ->
{ok, Int};
_ ->
{ok, [F || {F} <- Fs]}
end;
_ ->
error
end.
caps_write(LServer, NodePair, Features) ->
ejabberd_sql:sql_transaction(
LServer,
sql_write_features_t(NodePair, Features)).
export(_Server) ->
[{caps_features,
fun(_Host, #caps_features{node_pair = NodePair,
features = Features}) ->
sql_write_features_t(NodePair, Features);
(_Host, _R) ->
[]
end}].
%%%===================================================================
%%% Internal functions
%%%===================================================================
sql_write_features_t({Node, SubNode}, Features) ->
NewFeatures = if is_integer(Features) ->
[jlib:integer_to_binary(Features)];
true ->
Features
end,
[?SQL("delete from caps_features where node=%(Node)s"
" and subnode=%(SubNode)s;") |
[?SQL("insert into caps_features(node, subnode, feature)"
" values (%(Node)s, %(SubNode)s, %(F)s);") || F <- NewFeatures]].
|
