Uses of Interface
org.apache.druid.query.dimension.ColumnSelectorStrategy

Packages that use ColumnSelectorStrategy

Package	Description
org.apache.druid.query
org.apache.druid.query.aggregation.cardinality.types
org.apache.druid.query.dimension
org.apache.druid.query.groupby.epinephelinae.column
org.apache.druid.query.search
org.apache.druid.query.topn.types
org.apache.druid.segment

Uses of ColumnSelectorStrategy in org.apache.druid.query

Classes in org.apache.druid.query with type parameters of type ColumnSelectorStrategy

Modifier and Type	Class	Description
class	ColumnSelectorPlus<ColumnSelectorStrategyClass extends ColumnSelectorStrategy>	A grouping of various related objects used during query processing for a single dimension, used for convenience.

Uses of ColumnSelectorStrategy in org.apache.druid.query.aggregation.cardinality.types

Subinterfaces of ColumnSelectorStrategy in org.apache.druid.query.aggregation.cardinality.types

Modifier and Type	Interface	Description
interface	CardinalityAggregatorColumnSelectorStrategy<ValueSelectorType>

Classes in org.apache.druid.query.aggregation.cardinality.types that implement ColumnSelectorStrategy

Modifier and Type	Class	Description
class	DoubleCardinalityAggregatorColumnSelectorStrategy	If performance of this class appears to be a bottleneck for somebody, one simple way to improve it is to split it into two different classes, one that is used when NullHandling.replaceWithDefault() is false, and one - when it's true, moving this computation out of the tight loop
class	FloatCardinalityAggregatorColumnSelectorStrategy	If performance of this class appears to be a bottleneck for somebody, one simple way to improve it is to split it into two different classes, one that is used when NullHandling.replaceWithDefault() is false, and one - when it's true, moving this computation out of the tight loop
class	LongCardinalityAggregatorColumnSelectorStrategy	If performance of this class appears to be a bottleneck for somebody, one simple way to improve it is to split it into two different classes, one that is used when NullHandling.replaceWithDefault() is false, and one - when it's true, moving this computation out of the tight loop
class	StringCardinalityAggregatorColumnSelectorStrategy

Uses of ColumnSelectorStrategy in org.apache.druid.query.dimension

Classes in org.apache.druid.query.dimension with type parameters of type ColumnSelectorStrategy

Modifier and Type	Interface	Description
interface	ColumnSelectorStrategyFactory<ColumnSelectorStrategyClass extends ColumnSelectorStrategy>

Uses of ColumnSelectorStrategy in org.apache.druid.query.groupby.epinephelinae.column

Subinterfaces of ColumnSelectorStrategy in org.apache.druid.query.groupby.epinephelinae.column

Modifier and Type	Interface	Description
interface	GroupByColumnSelectorStrategy	Contains a collection of query processing methods for type-specific operations used exclusively by GroupByQueryEngineV2.

Classes in org.apache.druid.query.groupby.epinephelinae.column that implement ColumnSelectorStrategy

Modifier and Type	Class	Description
class	DictionaryBuildingGroupByColumnSelectorStrategy<DimensionType>	Strategy for grouping dimensions which can have variable-width objects, and aren't backed by prebuilt dictionaries.
class	FixedWidthGroupByColumnSelectorStrategy<T>	Strategy for grouping dimensions which have fixed-width objects.
class	KeyMappingMultiValueGroupByColumnSelectorStrategy	Like KeyMappingGroupByColumnSelectorStrategy, but for multi-value dimensions, i.e.
static class	KeyMappingMultiValueGroupByColumnSelectorStrategy.DictionaryBuilding
static class	KeyMappingMultiValueGroupByColumnSelectorStrategy.PrebuiltDictionary

Uses of ColumnSelectorStrategy in org.apache.druid.query.search

Subinterfaces of ColumnSelectorStrategy in org.apache.druid.query.search

Modifier and Type	Interface	Description
static interface	SearchQueryRunner.SearchColumnSelectorStrategy<ValueSelectorType>

Classes in org.apache.druid.query.search that implement ColumnSelectorStrategy

Modifier and Type	Class	Description
static class	SearchQueryRunner.DoubleSearchColumnSelectorStrategy
static class	SearchQueryRunner.FloatSearchColumnSelectorStrategy
static class	SearchQueryRunner.LongSearchColumnSelectorStrategy
static class	SearchQueryRunner.StringSearchColumnSelectorStrategy

Uses of ColumnSelectorStrategy in org.apache.druid.query.topn.types

Subinterfaces of ColumnSelectorStrategy in org.apache.druid.query.topn.types

Modifier and Type	Interface	Description
interface	TopNColumnAggregatesProcessor<ValueSelectorType>	This ColumnSelectorStrategy is used by all TopNAlgorithm to provide selector value cardinality to TopNParams (perhaps unecessarily, but that is another matter), but is primarily used by HeapBasedTopNAlgorithm to serve as its value aggregates store.

Classes in org.apache.druid.query.topn.types that implement ColumnSelectorStrategy

Modifier and Type	Class	Description
class	DoubleTopNColumnAggregatesProcessor
class	FloatTopNColumnAggregatesProcessor
class	LongTopNColumnAggregatesProcessor
class	NullableNumericTopNColumnAggregatesProcessor<Selector extends BaseNullableColumnValueSelector>	Base TopNColumnAggregatesProcessor for BaseNullableColumnValueSelector.
class	StringTopNColumnAggregatesProcessor

Uses of ColumnSelectorStrategy in org.apache.druid.segment

Methods in org.apache.druid.segment with type parameters of type ColumnSelectorStrategy

Modifier and Type	Method	Description
static <Strategy extends ColumnSelectorStrategy> ColumnSelectorPlus<Strategy>	DimensionHandlerUtils.createColumnSelectorPlus(ColumnSelectorStrategyFactory<Strategy> strategyFactory, DimensionSpec dimensionSpec, ColumnSelectorFactory cursor)	Convenience function equivalent to calling DimensionHandlerUtils.createColumnSelectorPluses(ColumnSelectorStrategyFactory, List, ColumnSelectorFactory) with a singleton list of dimensionSpecs and then retrieving the only element in the returned array.
static <Strategy extends ColumnSelectorStrategy> ColumnSelectorPlus<Strategy>[]	DimensionHandlerUtils.createColumnSelectorPluses(ColumnSelectorStrategyFactory<Strategy> strategyFactory, List<DimensionSpec> dimensionSpecs, ColumnSelectorFactory columnSelectorFactory)	Creates an array of ColumnSelectorPlus objects, selectors that handle type-specific operations within query processing engines, using a strategy factory provided by the query engine.