ret =g_dbus_connection_call_sync( g_bus_get_sync (G_BUS_TYPE_SESSION,NULL,NULL),"org.freedesktop.Tracker1","/org/freedesktop/Tracker1/Resources","org.freedesktop.Tracker1.Resources","SparqlQuery", g_variant_new ("(s)", query), G_VARIANT_TYPE ("(aas)"), G_DBUS_CALL_FLAGS_NONE,-...