void MSqlQuery::bindValues(const MSqlBindings &bindings)
{
MSqlBindings::const_iterator it;
for (it = bindings.begin(); it != bindings.end(); ++it)
{
bindValue(it.key(), it.value());
}
}
void MSqlAddMoreBindings(MSqlBindings &output, MSqlBindings &addfrom)
{
MSqlBindings::Iterator it;
for (it = addfrom.begin(); it != addfrom.end(); ++it)
{
output.insert(it.key(), it.value());
}
}
bool MSqlQuery::exec()
{
if (!m_db)
{
// Database structure's been deleted
return false;
}
if (m_last_prepared_query.isEmpty())
{
LOG(VB_GENERAL, LOG_ERR,
"MSqlQuery::exec(void) called without a prepared query.");
return false;
}
#if DEBUG_RECONNECT
if (random() < RAND_MAX / 50)
{
LOG(VB_GENERAL, LOG_INFO,
"MSqlQuery disconnecting DB to test reconnection logic");
m_db->m_db.close();
}
#endif
// Database connection down. Try to restart it, give up if it's still
// down
if (!m_db->isOpen() && !Reconnect())
{
LOG(VB_GENERAL, LOG_INFO, "MySQL server disconnected");
return false;
}
QElapsedTimer timer;
timer.start();
bool result = QSqlQuery::exec();
qint64 elapsed = timer.elapsed();
// if the query failed with "MySQL server has gone away"
// Close and reopen the database connection and retry the query if it
// connects again
if (!result && QSqlQuery::lastError().number() == 2006 && Reconnect())
result = QSqlQuery::exec();
if (!result)
{
QString err = MythDB::GetError("MSqlQuery", *this);
MSqlBindings tmp = QSqlQuery::boundValues();
bool has_null_strings = false;
for (MSqlBindings::iterator it = tmp.begin(); it != tmp.end(); ++it)
{
if (it->type() != QVariant::String)
continue;
if (it->isNull() || it->toString().isNull())
{
has_null_strings = true;
*it = QVariant(QString(""));
}
}
if (has_null_strings)
{
bindValues(tmp);
timer.restart();
result = QSqlQuery::exec();
elapsed = timer.elapsed();
}
if (result)
{
LOG(VB_GENERAL, LOG_ERR,
QString("Original query failed, but resend with empty "
"strings in place of NULL strings worked. ") +
"\n" + err);
}
}
if (VERBOSE_LEVEL_CHECK(VB_DATABASE, LOG_INFO))
{
QString str = lastQuery();
// Database logging will cause an infinite loop here if not filtered
// out
if (!str.startsWith("INSERT INTO logging "))
{
// Sadly, neither executedQuery() nor lastQuery() display
// the values in bound queries against a MySQL5 database.
// So, replace the named placeholders with their values.
QMapIterator<QString, QVariant> b = boundValues();
while (b.hasNext())
{
b.next();
str.replace(b.key(), '\'' + b.value().toString() + '\'');
}
LOG(VB_DATABASE, LOG_INFO,
QString("MSqlQuery::exec(%1) %2%3%4")
.arg(m_db->MSqlDatabase::GetConnectionName()).arg(str)
.arg(QString(" <<<< Took %1ms").arg(QString::number(elapsed)))
.arg(isSelect() ? QString(", Returned %1 row(s)")
.arg(size()) : QString()));
}
}
return result;
}
