Re: Application error (windows) - Vadim Berezniker - com.mysql.lists.plusplus

5 messages in com.mysql.lists.plusplusRe: Application error (windows)

From	Sent On	Attachments
J.Hoeve	24 Aug 2001 02:29
J.Hoeve	24 Aug 2001 04:31
Vadim Berezniker	24 Aug 2001 05:07
J.Hoeve	24 Aug 2001 05:36
Vadim Berezniker	24 Aug 2001 10:05

Subject:	Re: Application error (windows)
From:	Vadim Berezniker (vad...@berezniker.com)
Date:	08/24/2001 10:05:52 AM
List:	com.mysql.lists.plusplus

This indeed is a strange conclusion. A public or private function can access any other member function or variable. In any case, the compiler *should* prevent you from accessing data you are not supposed to.

Have you tried these things: a) Check if the connection was successful? after con->connect(dbase, "localhost", "root"); add if(!con->success()) { cout << "connection failed: " << con->error << endl; exit(1); }

b) Since you are enabling exceptions, have you tried actually catching them? i.e. try { con -> connect(dbase, "localhost", "root"); } catch(...) { cerr << "something was thrown!" << endl; exit(1); }

Instead of catching everything, you should catch BadQuery, etc, depending on the action.

J.Hoeve wrote:

i now have this: bool Database :: DoConnect(char *dbase) { con = new Connection(use_exceptions); try { con->connect(dbase, "localhost", "root"); query = con->query(); }

etc

does NOT work. continues to crash.

changed everything to work WITHOUT pointers. allright, everything's OK. BUT:: when i do the following: query = con.query(); (was commented), it starts crashing again. i've tried to put the Query object both in the private section and the public secition. neither works :(

therefore i conclude i can't write to private or public attributes in the Database class. (resulting in app errors). is this a strange conclusion? how can i solve it?

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