public AlertDefinition updateAlert() {
final Integer max = maximumValueTextBox.getNumberValue();
final Integer min = minimumValueTextBox.getNumberValue();
if (max == null && min == null) {
throw new DCUserInputException(
"Please enter a maximum or a minimum value for the selected metric.");
}
_alert.setMetricIdentifier(metricAnchor.getMetric());
_alert.setDescription(descriptionTextBox.getText());
_alert.setMaximumValue(max);
_alert.setMinimumValue(min);
_alert.setSeverity(getSelectedSeverity());
return _alert;
}
