 | | | Application hangs at Result call to at()... | Application hangs at Result call to at()... 2007-11-23 - By Graham Reitz
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I have an application that does the following:
unsigned int some_db::client_id_query(std::string &client_username,
std::string &client_password,
std::string &error_msg)
{
try
{
Query client_id_query = m_connection.query();
client_id_query << "select client_id from clients where
client_user_name ="
<< quote_only << client_username << " and client_password
="
<< quote_only << client_password;
cout << "Query created\n";
Result client_id_result = client_id_query.store();
cout << "Result received\n";
Row client_id_row;
if (client_id_row = client_id_result.at(0)) // It hangs
here, and eventually hard crashes.
{
return client_id_row.at(0);
}
}
catch (exception &e)
{
error_msg = e.what();
}
catch (...)
{
error_msg = "Unknown exception";
}
return 0;
}
The output is:
Connected to the some database (this is from the main function)
Query created
Result received (hangs here for about 20-30 seconds and than hard
crashes)
I can perform a manual query in the database using the mysql client
and it returns a result without issue.
What would cause it to hang for about 20-30 seconds at the
client_id_result.at(0) call?
If there is something fundamentally wrong with this code I would be
grateful for any advice.
Thanks,
graham
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