com.tibco.rta.runtime.metric
Interface MetricFunction<N>

All Known Implementing Classes:

AbstractMetricFunction, MultiValueMetricFunction, SingleValueMetricFunction

public interface MetricFunction<N>

Providers of metric computations should implement this interface. The metric computation engine will call into this interface's compute method in order to acquire its metric value.

Method Summary

void	init(Fact fact, Measurement measurement, MetricNode startNode, DimensionHierarchy dh) Perform state initialization for the entire computation when a new Fact is asserted.

Method Detail

init

void init(Fact fact,
          Measurement measurement,
          MetricNode startNode,
          DimensionHierarchy dh)
          throws java.lang.Exception

Perform state initialization for the entire computation when a new Fact is asserted.

Parameters:

fact - The newly asserted fact

startNode - Some cases framework passes startNode of the hierarchy chain.

metricFunctionDescriptor - The descriptor associated with this metric computation.

Throws:

java.lang.Exception - The implementation may throw an exception

Please refer

MetricDescriptor