c++ difference DBManager

[Marggraf 240]

hi,does anyone know the difference between:

DBManager::instance().Query("INSERT INTO ......
and
std::auto_ptr<SQLMsg> ms(DBManager::instance().DirectQuery("UPDATE ......

why first does not have: std::auto_ptr<SQLMsg> ?

[Vanilla 1538]

you'd have a look at auto_ptr or better unique_ptr (which you'd use instead of auto_ptr)

The first one executes an Async-Query. As stated in db.h it does not return a value at all. So it makes absolutely no sense to store it's result anywhere.

The second one is meant to be used when you want to store the results inside a variable. It's a direct query which means it'll be executed and the rest of the code will only continue when the query has finished and returned a value. You can later use it to e. g. check if the query was successful or not. In this case it's best to wrap it inside a unique_ptr (or in your case you mentioned auto_ptr which I do not recommend to use).

So, if you do not need to check the queries results (as mysql errors will be displayed anyway) and you do not need a returned value for proceeding, you can just use a Async Query. If you do need the results, then wrap it inside a auto_ptr and use a DirectQuery.

[Marggraf 240]

Thank you very much.The best explanation.

thanks

[ds_aim 263]

20 minutes ago, Marggraf said:

Thank you very much.The best explanation.

thanks

Si ce pula me ai inteles ma tu?  =))) off

[Marggraf 240]

Din cate stiu eu,lb oficiala e engleza,dar plt

Am inteles cand se foloseste una si cand se foloseste alta,si ce sa vezi? era fix ce ma interesa