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.constant
org.apache.druid.query.aggregation.firstlast
org.apache.druid.query.aggregation.firstlast.first
org.apache.druid.query.aggregation.firstlast.last
org.apache.druid.query.aggregation.hyperloglog
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.operator
org.apache.druid.query.operator.window
org.apache.druid.query.rowsandcols.semantic
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	Description
AggregatorFactory	AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.g.
MetricManipulationFn
PostAggregator	Functionally similar to an Aggregator.

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

Class	Description
AbstractSerializableLongObjectPairSerde
AbstractSerializablePairLongObjectBufferStore
AbstractSerializablePairLongObjectBufferStore.TransferredBuffer	contains serialized data that is compressed and delta-encoded (Long) It's ready to be transferred to a WritableByteChannel
AbstractSerializablePairLongObjectColumnHeader
AbstractSerializablePairLongObjectColumnSerializer	valid call sequence
AbstractSerializablePairLongObjectDeltaEncodedStagedSerde	serializes a Long/Object(Number) pair in the context of a column/segment.
AbstractSerializablePairLongObjectSimpleStagedSerde	serializes a Long/Object pair as Long:Byte:Object
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.
AggregatorAndSize	Encapsulates an Aggregator and the initial size in bytes required by the Aggregator.
AggregatorFactory	AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.g.
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.
ExpressionLambdaAggregatorFactory.FactorizePlan	Determine how to factorize the aggregator
ExpressionLambdaAggregatorInputBindings	Special Expr.ObjectBinding for use with ExpressionLambdaAggregatorFactory.
GroupingAggregatorFactory	This class implements grouping function to determine the grouping that a row is part of.
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.
SerializablePairLongDouble
SerializablePairLongDoubleComplexColumn
SerializablePairLongDoubleComplexColumn.Builder
SerializablePairLongDoubleDeltaEncodedStagedSerde
SerializablePairLongFloat
SerializablePairLongFloatComplexColumn
SerializablePairLongFloatComplexColumn.Builder
SerializablePairLongFloatDeltaEncodedStagedSerde
SerializablePairLongLong
SerializablePairLongLongComplexColumn
SerializablePairLongLongComplexColumn.Builder
SerializablePairLongLongDeltaEncodedStagedSerde
SerializablePairLongString
SerializablePairLongStringComplexColumn
SerializablePairLongStringComplexColumn.Builder
SerializablePairLongStringDeltaEncodedStagedSerde	serializes a Long/String pair in the context of a column/segment.
SerializedStorage	simple utility class useful for when multiple passes of input are needed for encoding (e.g.
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	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.g.
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.cardinality

Class	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.g.
BufferAggregator	A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
ObjectAggregateCombiner	Specialization of AggregateCombiner for object aggregations.
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.constant

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

Class	Description
SerializablePairLongDouble
SerializablePairLongFloat
SerializablePairLongLong
SerializablePairLongString
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.firstlast.first

Class	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.g.
BufferAggregator	A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
ObjectAggregateCombiner	Specialization of AggregateCombiner for object aggregations.
SerializablePairLongString
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.firstlast.last

Class	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.g.
BufferAggregator	A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
ObjectAggregateCombiner	Specialization of AggregateCombiner for object aggregations.
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.hyperloglog

Class	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.g.
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.mean

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

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

Class	Description
MetricManipulationFn

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

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

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

Class	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.g.

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

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

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

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

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

Class	Description
MetricManipulationFn

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

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

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

Class	Description
MetricManipulationFn

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

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

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

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

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

Class	Description
MetricManipulationFn

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

Class	Description
MetricManipulationFn

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

Class	Description
MetricManipulationFn

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

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

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

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

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

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

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

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

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

Class	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.g.
PostAggregator	Functionally similar to an Aggregator.

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

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