Class | Description |
---|---|
Average |
Class Average is an
Aggregator that returns the average of all numeric values in the current group. |
Average.Context |
Class Context is used to hold intermediate values.
|
Count |
Class Count is an
Aggregator that calculates the number of items in the current group. |
ExtentBase |
Class ExtentBase is the base class for First and Last.
|
ExtremaValueBase |
Class ExtremaValueBase is the base class for MaxValue and MinValue where the values are expected to by
Comparable types and the Comparable.compareTo(Object) result is use for max/min
comparison. |
ExtremaValueBase.Context | |
First |
Class First is an
Aggregator that returns the first Tuple encountered in a grouping. |
Last |
Class Last is an
Aggregator that returns the last Tuple encountered. |
MaxValue |
Class MaxValue is an
Aggregator that returns the maximum value encountered in the
current group. |
MinValue |
Class Min is an
Aggregator that returns the minimum value encountered in the current group. |
Sum |
Class Sum is an
Aggregator that returns the sum of all numeric values in the current group. |
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