diff options
Diffstat (limited to 'lib/mnesia/src/mnesia_lib.erl')
| -rw-r--r-- | lib/mnesia/src/mnesia_lib.erl | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/mnesia/src/mnesia_lib.erl b/lib/mnesia/src/mnesia_lib.erl index a5eded4f0f..ca3fc95b0c 100644 --- a/lib/mnesia/src/mnesia_lib.erl +++ b/lib/mnesia/src/mnesia_lib.erl @@ -151,6 +151,8 @@ unset/1, %% update_counter/2, val/1, + validate_key/2, + validate_record/2, vcore/0, vcore/1, verbose/2, @@ -344,6 +346,33 @@ search_key(Key, [{Val, List} | Tail]) -> search_key(_Key, []) -> unknown. +validate_key(Tab, Key) -> + case ?catch_val({Tab, record_validation}) of + {RecName, Arity, Type} -> + {RecName, Arity, Type}; + {RecName, Arity, Type, Alias, Mod} -> + %% external type + Mod:validate_key(Alias, Tab, RecName, Arity, Type, Key); + {'EXIT', _} -> + mnesia:abort({no_exists, Tab}) + end. + + +validate_record(Tab, Obj) -> + case ?catch_val({Tab, record_validation}) of + {RecName, Arity, Type} + when tuple_size(Obj) == Arity, RecName == element(1, Obj) -> + {RecName, Arity, Type}; + {RecName, Arity, Type, Alias, Mod} + when tuple_size(Obj) == Arity, RecName == element(1, Obj) -> + %% external type + Mod:validate_record(Alias, Tab, RecName, Arity, Type, Obj); + {'EXIT', _} -> + mnesia:abort({no_exists, Tab}); + _ -> + mnesia:abort({bad_type, Obj}) + end. + %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% ops, we've got some global variables here :-) |