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|
-module(db_model).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-record
(
db_model,
{
store_file :: string(),
neighbors :: list(node())
}
).
-type type() :: #db_model{}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-export_type([type/0]).
-export
(
[
new/2,
add_db/2,
start/1
]
).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-spec new (string(), list(node())) -> type().
new (StorageFile, Neighbors) ->
#db_model
{
store_file = StorageFile,
neighbors = Neighbors
}.
-spec start(type()) -> 'ok'.
start (Model) ->
StorageFile = Model#db_model.store_file,
Neighbors = Model#db_model.neighbors,
ok = application:set_env(mnesia, dir, StorageFile),
case mnesia:create_schema([node()|Neighbors]) of
{error, {Name, {already_exists, Name}}} -> ok;
ok -> ok
end,
ok = mnesia:start(),
ok.
-spec add_db (atom(), type()) -> 'ok'.
add_db (DBName, Model) ->
Neighbors = Model#db_model.neighbors,
mnesia:create_table
(
DBName,
[
{record_name, shr_db_item:get_record_name()},
{attributes, shr_db_item:get_record_info()},
{disc_copies, [node()|Neighbors]},
{disc_only_copies, []},
{ram_copies, []},
{type, ordered_set},
{local_content, false}
]
),
ok.
|
