[mythtv-commits] mythtv commit: r21875 by mdean

[mythtv at cvs.mythtv.org]

      Author: mdean
        Date: 2009-09-15 22:16:17 +0000 (Tue, 15 Sep 2009)
New Revision: 21875
   Changeset: http://cvs.mythtv.org/trac/changeset/21875

Modified:

   trunk/mythtv/libs/libmythdb/mythdbcon.cpp

Log:

Log an error message when preparing a query fails so we don't lose the database error message.

With Qt4 (unlike Qt3) drivers, an error can occur during prepare().  Since Myth code was written for the Qt3 behavior, it doesn't check the prepare() return value.  When we attempt to exec() an invalid query, exec() returns false, resulting in another error message.  However, since exec() resets lastError(), the message logged will be, "No error type from QSqlError?  Strange..."  This patch simply ensures we retain enough information about the query to be able to fix it.