Hello,

I'm trying to use exceptions in mysql++ but i can only catch exceptions of
type 'exception'.

For example, in:

try {
query.execute("blabla");
}
catch(BadQuery& e) {
cout << "Bad Query: " << e.what() << endl;
}
catch(Exception& e) {
cout << "Exception: " << e.what() << endl;
}
catch(exception& e) {
cout << "DAMN!" << endl;
}

The BadQuery (and even the Exception) will be never catched... The result is
always: DAMN! This is ofcourse quite annoying since i have to do:

try {
query << "blablaba";
queryString = query.str();
}
catch(exception& e) {
cout << "unable to execute: " << queryString << endl;
}


I'm using mysql++-2.0.4 and i ran the configure script with
'--with-exception' as argument. Furthermore i've done:

connection con(true);
con.connect(...);


I hope someone can give me some advice,
Jonatan



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Jonatan Taminau wrote:
What does it say if you replace that cout statement with:

cout << typeid(e).name << endl;

? (Syntax may be wrong...adjust as necessary.)

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I get:

PSt9exception




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Jonatan Taminau wrote:
....and if you say:

cout << e.what() << endl;

instead?

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Then I get:

"You have an error in your SQL syntax; check the manual that corresponds
to your MySQL server version for the right syntax to use near 'blabla' at
line 1"

Which is ok, the only strange problem is that it's of type exception so I
can't do any more robust error handling...



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On Fri, Oct 14, 2005 at 09:07:50AM +0200, Jonatan Taminau wrote:
I don't think you mentioned this earlier, but what compiler are you using?

And just to make sure, I assume there are no other mysql++ headers in
various spots on your system that might be getting included?

- Chris


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I'm working in Xcode 2.1, which uses the GNU C/C++ Compiler 4.0.
The only file I include is <mysql++.h> and I had to include the following
linker flags:
-bind_at_load -lmysqlclient -lmysqlpp

BTW, My apologies for creating an unnecessary new thread but how can you
reply to messages without being subscribed to the mailinglist? (I just send
mails to the plusplus (AT) lists (DOT) mysql.com address with subject the name of the
thread)

Jonatan



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On Fri, Oct 14, 2005 at 10:28:44AM +0200, Jonatan Taminau wrote:
Is it possible to compile without -bind_at_load? Just to eliminate
possible variables here.


I am subscribed, with one of my other addresses: cdfrey (AT) netdirect (DOT) ca.

- Chris


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- warning suggest use of -bind_at_load, as lazy binding may result in errors
or different symbols being used

For the rest nothing changed.




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