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Change the match_object function argument to a basic wild pattern #496

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Change the match_object function argument to a basic wild pattern #496

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70 changes: 1 addition & 69 deletions contrib/ymnesia.erl
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Original file line number Diff line number Diff line change
Expand Up @@ -50,8 +50,7 @@ out(A) ->
L = yaws_api:parse_post(A),
{Cbox, Rest} = extract_cbox(L),
Name = lk("tablename", Rest),
Ls = select_fields(Rest),
Sp = (catch select_pattern(Name, Ls)),
Sp = ?MNESIA(table_info, [l2a(Name), wild_pattern]),
case catch table(Cbox, Sp, l2a(Name)) of
{'EXIT', Reason} ->
?elog("Error , reason: ~p~n", [Reason]),
Expand All @@ -66,51 +65,6 @@ out(A) ->
return_top_page()
end.

%%% Get the fields to be part of the select
select_fields([{"tablename",_}|T]) -> select_fields(T);
select_fields([{_,undefined}|T]) -> select_fields(T);
select_fields([H|T]) -> [H|select_fields(T)];
select_fields([]) -> [].

select_pattern(Name, Ls) ->
Wp = ?MNESIA(table_info, [l2a(Name), wild_pattern]),
mk_select_pattern(lists:map(fun(A) -> a2l(A) end,get_attributes(l2a(Name))),
Ls, Wp, 2).

mk_select_pattern([A|As], [{A,V}|T], Wp, N) ->
mk_select_pattern(As, T, setelement(N, Wp, be_smart(V)), N+1);
mk_select_pattern([_|As], L, Wp, N) ->
mk_select_pattern(As, L, Wp, N+1);
mk_select_pattern([], [], Wp, _) ->
Wp.

%%% Try to be intelligent and convert the Key to the datatype that
%%% could be expected. Note: atom is anything between single quotes.
be_smart([$'|T]) -> l2a(eat_until($', T));
be_smart([$[|_] = L) -> str2term(L);
be_smart([${|_] = L) -> str2term(L);
be_smart(L) ->
case be_smart(L, false) of
integer -> list_to_integer(L);
float -> list_to_float(L);
_ -> L
end.

eat_until(H, [H|_]) -> [];
eat_until(X, [H|T]) -> [H|eat_until(X,T)].


be_smart([H|T], false) when H>$0, H=<$9 ->
be_smart(T, integer);
be_smart([H|T], integer) when H>$0, H=<$9 ->
be_smart(T, integer);
be_smart([H|T], integer) when H>$. ->
be_smart(T, float);
be_smart([_|T], _) ->
be_smart(T, list);
be_smart([], Type) ->
Type.

return_top_page() ->
{ehtml,
[{head, [],
Expand Down Expand Up @@ -280,25 +234,3 @@ t2l(L) ->
tail([]) -> [];
tail(L) -> tl(L).


str2term(Str) ->
hd(str2terms(Str ++ ". ")).

%% str2tokens:str2terms("{hello,23}. [arne,43]. 5.6. {5.5,1.0}. ").
%% ==> [{hello,23},[arne,43],5.60000,{5.50000,1.00000}]
str2terms(String) ->
tokenlists2terms(str2tokenlists(String)).

str2tokenlists("") -> [];
str2tokenlists(String) ->
case erl_scan:tokens([], String, 1) of
{done, {ok, Tokens, _}, Rest} ->
[Tokens | str2tokenlists(Rest)]
end.

tokenlists2terms(Lists) ->
lists:map(fun(L) ->
{ok, Term} = erl_parse:parse_term(L),
Term
end, Lists).