Uses of Package
org.apache.druid.query.aggregation

Packages that use org.apache.druid.query.aggregation

Package	Description
org.apache.druid.query
org.apache.druid.query.aggregation
org.apache.druid.query.aggregation.any
org.apache.druid.query.aggregation.cardinality
org.apache.druid.query.aggregation.first
org.apache.druid.query.aggregation.hyperloglog
org.apache.druid.query.aggregation.last
org.apache.druid.query.aggregation.mean
org.apache.druid.query.aggregation.post
org.apache.druid.query.datasourcemetadata
org.apache.druid.query.groupby
org.apache.druid.query.groupby.epinephelinae
org.apache.druid.query.groupby.having
org.apache.druid.query.groupby.orderby
org.apache.druid.query.metadata
org.apache.druid.query.metadata.metadata
org.apache.druid.query.scan
org.apache.druid.query.search
org.apache.druid.query.timeboundary
org.apache.druid.query.timeseries
org.apache.druid.query.topn
org.apache.druid.query.topn.types
org.apache.druid.segment
org.apache.druid.segment.column
org.apache.druid.segment.generator
org.apache.druid.segment.incremental
org.apache.druid.segment.serde

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query

Class and Description
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
MetricManipulationFn
PostAggregator Functionally similar to an Aggregator.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.aggregation

Class and Description
AggregateCombiner 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.
AggregatorAdapters A class that helps query engines use Buffer- or VectorAggregators in a consistent way.
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
AggregatorFactoryNotMergeableException
BufferAggregator A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
DelegatingAggregator An Aggregator that delegates everything.
DelegatingBufferAggregator A BufferAggregator that delegates everything.
Histogram
HistogramVisual
LongAggregateCombiner Specialization of AggregateCombiner for primitive long aggregations.
MetricManipulationFn
NoopAggregator
NoopBufferAggregator
NoopVectorAggregator
NullableNumericAggregatorFactory Abstract superclass for null-aware numeric aggregators.
PostAggregator Functionally similar to an Aggregator.
SimpleDoubleAggregatorFactory This is an abstract class inherited by various AggregatorFactory implementations that consume double input and produce double output on aggregation.
SimpleDoubleBufferAggregator
SimpleFloatAggregatorFactory
SimpleFloatBufferAggregator
SimpleLongAggregatorFactory This is an abstract class inherited by various AggregatorFactory implementations that consume long input and produce long output on aggregation.
SimpleLongBufferAggregator
VectorAggregator An object that can aggregate metrics into a ByteBuffer, from vectorized column selectors.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.aggregation.any

Class and Description
AggregateCombiner 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.
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
BufferAggregator A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.aggregation.cardinality

Class and Description
AggregateCombiner 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.
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
BufferAggregator A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
ObjectAggregateCombiner Specialization of AggregateCombiner for object aggregations.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.aggregation.first

Class and Description
AggregateCombiner 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.
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
BufferAggregator A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
ObjectAggregateCombiner Specialization of AggregateCombiner for object aggregations.
SerializablePairLongString

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.aggregation.hyperloglog

Class and Description
AggregateCombiner 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.
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
AggregatorFactoryNotMergeableException
BufferAggregator A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
PostAggregator Functionally similar to an Aggregator.
VectorAggregator An object that can aggregate metrics into a ByteBuffer, from vectorized column selectors.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.aggregation.last

Class and Description
AggregateCombiner 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.
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
BufferAggregator A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
ObjectAggregateCombiner Specialization of AggregateCombiner for object aggregations.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.aggregation.mean

Class and Description
Aggregator An Aggregator is an object that can aggregate metrics.
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
BufferAggregator A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
VectorAggregator An object that can aggregate metrics into a ByteBuffer, from vectorized column selectors.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.aggregation.post

Class and Description
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
PostAggregator Functionally similar to an Aggregator.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.datasourcemetadata

Class and Description
MetricManipulationFn

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.groupby

Class and Description
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
MetricManipulationFn
PostAggregator Functionally similar to an Aggregator.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.groupby.epinephelinae

Class and Description
AggregatorAdapters A class that helps query engines use Buffer- or VectorAggregators in a consistent way.
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.groupby.having

Class and Description
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.groupby.orderby

Class and Description
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
PostAggregator Functionally similar to an Aggregator.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.metadata

Class and Description
MetricManipulationFn

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.metadata.metadata

Class and Description
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.scan

Class and Description
MetricManipulationFn

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.search

Class and Description
MetricManipulationFn

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.timeboundary

Class and Description
MetricManipulationFn

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.timeseries

Class and Description
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
MetricManipulationFn
PostAggregator Functionally similar to an Aggregator.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.topn

Class and Description
Aggregator An Aggregator is an object that can aggregate metrics.
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
BufferAggregator A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
MetricManipulationFn
PostAggregator Functionally similar to an Aggregator.
SimpleDoubleBufferAggregator

Classes in org.apache.druid.query.aggregation used by org.apache.druid.query.topn.types

Class and Description
Aggregator An Aggregator is an object that can aggregate metrics.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.segment

Class and Description
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.segment.column

Class and Description
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
PostAggregator Functionally similar to an Aggregator.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.segment.generator

Class and Description
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.segment.incremental

Class and Description
Aggregator An Aggregator is an object that can aggregate metrics.
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.
BufferAggregator A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
PostAggregator Functionally similar to an Aggregator.

Classes in org.apache.druid.query.aggregation used by org.apache.druid.segment.serde

Class and Description
AggregatorFactory AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.