/**
* @param eventsList
* @return the fold application value.
*/
private double performFold(final List<MonitoringEvent> eventsList) {
final double arr[] = new double[eventsList.size()];
if (metric != null)
for (int i = 0; i < arr.length; ++i) arr[i] = (Double) eventsList.get(i).get(metric);
return foldMethod.perform(arr);
}
/**
* Constructor.
*
* @param bean
*/
private ThresholdRequirement(final ThresholdRequirementBean bean) {
this.thresholdValue = bean.getThreshold();
this.metric = bean.getMetric();
this.pred = ThresholdPredicate.from(bean.getPredicate());
this.foldMethod =
bean.getAggregationMethod() != null
? ThresholdFold.from(bean.getAggregationMethod())
: null;
}
/**
* @param method
* @return a {@link ThresholdFold}.
* @throws ThresholdRuleValidationError
*/
static ThresholdFold from(final String method) throws ThresholdRuleValidationError {
for (final ThresholdFold p : ThresholdFold.values()) if (p.name.equals(method)) return p;
throw new ThresholdRuleValidationError(
"invalid rule specification: unsupported aggregation method: " + method);
}
