MeasurementFetchStrategyProvider (OpenNMS 28.1.1 API)

All Known Implementing Classes:

JrobinFetchStrategyProvider, JRrd2FetchStrategyProvider, NewtsFetchStrategyProvider, RrdtoolXportFetchStrategyProvider, TimeseriesFetchStrategyProvider
```
public interface MeasurementFetchStrategyProvider
```
Every MeasurementFetchStrategy implementation is represented by MeasurementFetchStrategyProvider, which can be used to determine whether or not it can fetch measurements for a given Time Series / RRD strategy combo. The MeasurementFetchStrategyProvider allows us to determine which (fetch) strategy to use, without needed to actually instantiate the implementation classes, since these may have dependencies which are not available on the current class-path.

Author:

Jesse White

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.Class<? extends MeasurementFetchStrategy>`	`getStrategyClass(java.lang.String timeSeriesStrategyName, java.lang.String rrdStrategyClass)`	Returns a reference to an implementation of `MeasurementFetchStrategy` that supports retrieving measurements for the given Time Series / RRD Strategy.

- Method Detail
  - getStrategyClass
```
java.lang.Class<? extends MeasurementFetchStrategy> getStrategyClass(java.lang.String timeSeriesStrategyName,
                                                                     java.lang.String rrdStrategyClass)
```
    Returns a reference to an implementation of MeasurementFetchStrategy that supports retrieving measurements for the given Time Series / RRD Strategy.
    
    Parameters:
    
    timeSeriesStrategyName - name of the time series strategy
    
    rrdStrategyClass - canonical name of the RrdStrategy implementation
    
    Returns:
    
    null or a reference to a supported implementation