long checksum = connectionModel.getSelectedSchemaModel().recalculateSchemaChecksum();
if (checksum != connectionModel.getSelectedSchemaModel().getSchemaChecksum()) {
// display warning message
XulMessageBox msgBox = (XulMessageBox) document.createElement("messagebox");
msgBox.setMessage(Messages.getString("MainController.WarningSchemaChanged"));
msgBox.open();
}
// reset state of app into connected mode
String cubeName = connectionModel.getCubeName();
if(StringUtils.isEmpty(cubeName)) {