1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
% The clientdatabase
-module(cldb).
-export([init/0]).
-record(user, {name, passwd, votes, rights}).
init() ->
mnesia:create_schema([node()]),
mnesia:start(),
mnesia:create_table(user, [{attributes, record_info(fields, user)}]),
io:format("Userdb up and running \n").
ask(User, Pwd) ->
F = fun() ->
mnesia:match_object({user, User, Pwd, '_'})
end,
mnesia:transaction(F).
login(User, Pwd) ->
{_, Reason} = ask(User, Pwd),
Reason.
register(User, Pwd, Root) ->
F = fun() ->
mnesia:write(#user{name = User, passwd = Pwd, votes = 5, rights = Root})
end,
{_, Reason} = mnesia:transaction(F),
Reason.
|
