+bool AbstractSqlStorage::upgradeDb()
+{
+ if (schemaVersion() <= installedSchemaVersion())
+ return true;
+
+ QSqlDatabase db = logDb();
+
+ for (int ver = installedSchemaVersion() + 1; ver <= schemaVersion(); ver++) {
+ foreach(QString queryString, upgradeQueries(ver)) {
+ QSqlQuery query = db.exec(queryString);
+ if (!watchQuery(query)) {
+ qCritical() << "Unable to upgrade Logging Backend!";
+ return false;
+ }
+ }
+ }
+ return updateSchemaVersion(schemaVersion());
+}
+
+
+int AbstractSqlStorage::schemaVersion()
+{
+ // returns the newest Schema Version!
+ // not the currently used one! (though it can be the same)
+ if (_schemaVersion > 0)
+ return _schemaVersion;
+
+ int version;
+ bool ok;
+ QDir dir = QDir(":/SQL/" + displayName());
+ foreach(QFileInfo fileInfo, dir.entryInfoList()) {
+ if (!fileInfo.isDir())
+ continue;
+
+ version = fileInfo.fileName().toInt(&ok);
+ if (!ok)
+ continue;
+
+ if (version > _schemaVersion)
+ _schemaVersion = version;
+ }
+ return _schemaVersion;
+}
+
+
+bool AbstractSqlStorage::watchQuery(QSqlQuery &query)
+{
+ bool queryError = query.lastError().isValid();
+ if (queryError || _debug) {
+ if (queryError)
+ qCritical() << "unhandled Error in QSqlQuery!";
+ qCritical() << " last Query:\n" << qPrintable(query.lastQuery());
+ qCritical() << " executed Query:\n" << qPrintable(query.executedQuery());
+ QVariantMap boundValues = query.boundValues();
+ QStringList valueStrings;
+ QVariantMap::const_iterator iter;
+ for (iter = boundValues.constBegin(); iter != boundValues.constEnd(); ++iter) {
+ QString value;
+ QSqlField field;
+ if (query.driver()) {
+ // let the driver do the formatting
+ field.setType(iter.value().type());
+ if (iter.value().isNull())
+ field.clear();
+ else
+ field.setValue(iter.value());
+ value = query.driver()->formatValue(field);
+ }
+ else {
+ switch (iter.value().type()) {
+ case QVariant::Invalid:
+ value = "NULL";
+ break;
+ case QVariant::Int:
+ value = iter.value().toString();
+ break;
+ default:
+ value = QString("'%1'").arg(iter.value().toString());
+ }
+ }
+ valueStrings << QString("%1=%2").arg(iter.key(), value);
+ }
+ qCritical() << " bound Values:" << qPrintable(valueStrings.join(", "));
+ qCritical() << " Error Number:" << query.lastError().number();
+ qCritical() << " Error Message:" << qPrintable(query.lastError().text());
+ qCritical() << " Driver Message:" << qPrintable(query.lastError().driverText());
+ qCritical() << " DB Message:" << qPrintable(query.lastError().databaseText());
+
+ return !queryError;
+ }
+ return true;
+}
+
+
+void AbstractSqlStorage::connectionDestroyed()
+{
+ QMutexLocker locker(&_connectionPoolMutex);
+ _connectionPool.remove(sender()->thread());