Package io.druid.query.aggregation

Interface Summary

Interface	Description
AggregateCombiner<T>	AggregateCombiner is used to fold rollup aggregation results from serveral "rows" of different indexes during index merging (see IndexMerger).
Aggregator	An Aggregator is an object that can aggregate metrics.
BufferAggregator	A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
MetricManipulationFn
PostAggregator	Functionally similar to an Aggregator.

Class Summary

Class	Description
AggregatorFactory	AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
AggregatorUtil
CountAggregator
CountAggregatorFactory
CountBufferAggregator
DoubleAggregateCombiner	Specialization of AggregateCombiner for primitive double aggregations.
DoubleMaxAggregator
DoubleMaxAggregatorFactory
DoubleMaxBufferAggregator
DoubleMinAggregator
DoubleMinAggregatorFactory
DoubleMinBufferAggregator
DoubleSumAggregator
DoubleSumAggregatorFactory
DoubleSumBufferAggregator
FilteredAggregator
FilteredAggregatorFactory
FilteredBufferAggregator
FloatMaxAggregator
FloatMaxAggregatorFactory
FloatMaxBufferAggregator
FloatMinAggregator
FloatMinAggregatorFactory
FloatMinBufferAggregator
FloatSumAggregator
FloatSumAggregatorFactory
FloatSumBufferAggregator
Histogram
HistogramAggregator
HistogramAggregatorFactory
HistogramBufferAggregator
HistogramVisual
JavaScriptAggregator
JavaScriptAggregatorFactory
JavaScriptBufferAggregator
LongAggregateCombiner	Specialization of AggregateCombiner for primitive long aggregations.
LongBufferAggregator
LongMaxAggregator
LongMaxAggregatorFactory
LongMaxBufferAggregator
LongMinAggregator
LongMinAggregatorFactory
LongMinBufferAggregator
LongSumAggregateCombiner
LongSumAggregator
LongSumAggregatorFactory
LongSumBufferAggregator
MetricManipulatorFns
NoopAggregator
NoopBufferAggregator
ObjectAggregateCombiner<T>	Specialization of AggregateCombiner for object aggregations.
SimpleDoubleAggregatorFactory
SimpleDoubleBufferAggregator
SimpleFloatAggregatorFactory
SimpleFloatBufferAggregator
TimestampAggregator
TimestampAggregatorFactory
TimestampBufferAggregator
TimestampMaxAggregatorFactory
TimestampMinAggregatorFactory
TimestampMinMaxModule

Exception Summary

Exception	Description
AggregatorFactoryNotMergeableException