1 files changed, 0 insertions, 207 deletions
diff --git a/src/db/struct/db_item_ids_manager.erl b/src/db/struct/db_item_ids_manager.erl
deleted file mode 100644
index e2af8a6..0000000
--- a/src/db/struct/db_item_ids_manager.erl
+++ /dev/null
@@ -1,207 +0,0 @@
--module(db_item_ids_manager).
--behavior(gen_server).
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--record
-(
-   entry,
-   {
-      last_id :: binary(),
-      freed_ids :: list(binary())
-   }
-).
-
--type entry() :: #entry{}.
-
-%% FIXME: IDs should be generated in a decentralized fashion.
-%% TODO: How to handle IDs management with the redundancy DBs?
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%%%% 'gen_server' Exports
--export
-(
-   [
-      init/1,
-      handle_cast/2,
-      handle_call/3, %% No reply will ever be given.
-      terminate/2,
-      code_change/3,
-      format_status/2,
-      handle_info/2
-   ]
-).
-
-%%%% Actual Interface
--export
-(
-   [
-      allocate/1,
-      free/2,
-      start/0
-   ]
-).
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--spec next_char (integer()) -> integer().
-next_char ($9) -> $a;
-next_char ($z) -> $A;
-next_char ($Z) -> $0;
-next_char (C) -> (C + 1).
-
--spec next_id_internal
-   (
-      list(integer()),
-      boolean(),
-      list(integer())
-   )
-   -> list(integer()).
-next_id_internal ([], true, Result) -> [$0|Result];
-next_id_internal ([], false, Result) -> Result;
-next_id_internal ([$Z|Next], true, Result) ->
-   next_id_internal(Next, true, [$0|Result]);
-next_id_internal ([Char|Next], true, Result) ->
-   next_id_internal(Next, false, [next_char(Char)|Result]);
-next_id_internal ([Char|Next], false, Result) ->
-   next_id_internal(Next, false, [Char|Result]).
-
--spec next_id (binary()) -> binary().
-next_id (ID) ->
-   list_to_binary
-   (
-      next_id_internal
-      (
-         lists:reverse(binary:bin_to_list(ID)),
-         true,
-         []
-      )
-   ).
-
--spec new_entry () -> entry().
-new_entry () ->
-   #entry
-   {
-      last_id = <<"">>,
-      freed_ids = []
-   }.
-
--spec allocate_id_in_entry (entry()) -> {entry(), binary()}.
-allocate_id_in_entry (Entry) ->
-   case Entry#entry.freed_ids of
-      [] ->
-         NewID = next_id(Entry#entry.last_id),
-         {
-            Entry#entry{ last_id = NewID },
-            NewID
-         };
-
-      [OldID|OtherOldIDs] ->
-         {
-            Entry#entry{ freed_ids = OtherOldIDs },
-            OldID
-         }
-   end.
-
--spec allocate_id
-   (
-      atom(),
-      dict:dict(atom(), entry())
-   )
-   -> {dict:dict(atom(), entry()), binary()}.
-allocate_id (DB, State) ->
-   S0Entry =
-      case dict:find(DB, State) of
-         {ok, Value} -> Value;
-         error -> new_entry()
-      end,
-
-   {S1Entry, NewID} = allocate_id_in_entry(S0Entry),
-
-   S0State = dict:store(DB, S1Entry, State),
-
-   {S0State, NewID}.
-
--spec free_id
-   (
-      binary(),
-      atom(),
-      dict:dict(atom(), entry())
-   )
-   -> dict:dict(atom(), entry()).
-free_id (ID, DB, State) ->
-   Entry =
-      case dict:find(DB, State) of
-         {ok, Value} -> Value;
-         error -> new_entry()
-      end,
-
-   EntryFreedIDs = Entry#entry.freed_ids,
-
-   case lists:member(ID, EntryFreedIDs) of
-      true -> State;
-      false ->
-         Result =
-            dict:store
-            (
-               DB,
-               Entry#entry{ freed_ids = [ID|EntryFreedIDs] },
-               State
-            ),
-
-         Result
-   end.
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%%%% 'gen_server' functions
-init (_) -> {ok, dict:new()}.
-
-handle_call ({allocate, DB}, _, State) ->
-   {NewState, NewID} = allocate_id(DB, State),
-   {reply, {allocated_id, NewID}, NewState};
-handle_call ({free, ID, DB}, _, State) ->
-   {noreply, free_id(ID, DB, State)}.
-
-handle_cast ({allocate, _DB}, State) ->
-   {noreply, State};
-handle_cast ({free, ID, DB}, State) ->
-   {noreply, free_id(ID, DB, State)}.
-
-terminate (_, _) -> ok.
-
-code_change (_, State, _) ->
-   {ok, State}.
-
-format_status (_, [_, State]) ->
-   [{data, [{"State", State}]}].
-
-handle_info(_, State) ->
-   {noreply, State}.
-
-%%%% Interface Functions
--spec allocate (atom()) -> binary().
-allocate (DB) ->
-   {allocated_id, Result} =
-      gen_server:call({global, db_item_ids_manager}, {allocate, DB}),
-
-   io:format("~n[DB: ~p] Item ID ~p allocated.~n", [DB, Result]),
-
-   Result.
-
--spec free (binary(), atom()) -> 'ok'.
-free (ID, DB) ->
-   gen_server:cast({global, db_item_ids_manager}, {free, ID, DB}),
-
-   ok.
-
--spec start () -> 'ok'.
-start () ->
-   {ok, _} = gen_server:start({global, db_item_ids_manager}, ?MODULE, none, []),
-
-   ok.