| Class | Description | 
|---|---|
| AbstractRrdBasedFetchStrategy | 
 Used to fetch measurements from RRD files. 
 | 
| JexlEvaluateFunctions | 
 Functions to use JexlEngine to evaluate a given formula string against the current context 
 | 
| JEXLExpressionEngine | 
 An expression engine implemented using JEXL. 
 | 
| JrobinFetchStrategy | 
 Used to fetch measurements from JRB files. 
 | 
| JrobinFetchStrategyProvider | |
| JRrd2FetchStrategy | |
| JRrd2FetchStrategyProvider | |
| NewtsFetchStrategy | 
 Used to retrieve measurements from  
SampleRepository. | 
| NewtsFetchStrategy.LateAggregationParams | |
| NewtsFetchStrategyProvider | 
 Provides a reference to the  
NewtsFetchStrategy
 when using the 'newts' time-series series strategy. | 
| NullFetchStrategy | 
 Used as a fall-back when no known implementations are available. 
 | 
| RrdtoolXportFetchStrategy | 
 Used to fetch measurements from RRD files by invoking
 rrdtool via exec. 
 | 
| RrdtoolXportFetchStrategyProvider | |
| SampleArrayFunctions | 
 Returns prior samples of given attribute from jexl context 
 | 
| Utils | 
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