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Interface Summary | |
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AggregationMethod | Maintains aggregation state applying values as entering and leaving the state. |
AggregationResultFuture | Interface for use by aggregate expression nodes representing aggregate functions such as 'sum' or 'avg' to use to obtain the current value for the function at time of expression evaluation. |
AggregationService | Service for maintaing aggregation state. |
Class Summary | |
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AggregationServiceBase | All aggregation services require evaluation nodes which supply the value to be aggregated (summed, averaged, etc.) and aggregation state factories to make new aggregation states. |
AggregationServiceFactory | Factory for aggregation service instances. |
AggregationServiceGroupAllImpl | Implementation for handling aggregation without any grouping (no group-by). |
AggregationServiceGroupByImpl | Implementation for handling aggregation with grouping by group-keys. |
AggregationServiceNull | A null object implementation of the AggregationService interface. |
AggregationSupport | Base class for use with plug-in aggregation functions. |
AvedevAggregator | Standard deviation always generates double-types numbers. |
AvgAggregator | Average always generates double-types numbers. |
CountAggregator | Counts all datapoints including null values. |
DistinctValueAggregator | AggregationMethod for use on top of another aggregator that handles unique value aggregation (versus all-value aggregation) for the underlying aggregator. |
DoubleSumAggregator | Sum for double values. |
FloatSumAggregator | Sum for float values. |
IntegerSumAggregator | Sum for integer values. |
LongSumAggregator | Sum for long values. |
MedianAggregator | Median aggregation. |
MinMaxAggregator | Min/max aggregator for all values. |
NonNullCountAggregator | Count all non-null values. |
NumIntegerSumAggregator | Sum for any number value. |
StddevAggregator | Standard deviation always generates double-typed numbers. |
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