Package org.apache.druid.query.topn

Interface Summary

Interface	Description
Generic1AggPooledTopNScanner
Generic2AggPooledTopNScanner
Historical1AggPooledTopNScanner<DimensionSelectorType extends HistoricalDimensionSelector,MetricSelectorType,BufferAggregatorType extends BufferAggregator>
TopNAlgorithm<DimValSelector,Parameters extends TopNParams>
TopNMetricSpec
TopNMetricSpecBuilder<T>
TopNQueryMetrics	Specialization of QueryMetrics for TopNQuery.
TopNQueryMetricsFactory	Implementations could be injected using PolyBind .optionBinder(binder, Key.get(TopNQueryMetricsFactory.class)) .addBinding("myCustomTopNQueryMetricsFactory") .to(MyCustomTopNQueryMetricsFactory.class); And then setting property: druid.query.topN.queryMetricsFactory=myCustomTopNQueryMetricsFactory
TopNResultBuilder

Class Summary

Class	Description
AggregateTopNMetricFirstAlgorithm	This TopNAlgorithm is tailored to processing aggregates on high cardility columns which are likely to have larger result sets.
AlphaNumericTopNMetricSpec
BaseTopNAlgorithm<DimValSelector,DimValAggregateStore,Parameters extends TopNParams>
BaseTopNAlgorithm.AggregatorArrayProvider
BaseTopNAlgorithm.BaseArrayProvider<T>
BySegmentTopNResultValue
DefaultTopNQueryMetrics
DefaultTopNQueryMetricsFactory
DimensionAndMetricValueExtractor
DimensionTopNMetricSpec
DimValHolder
DimValHolder.Builder
Generic1AggPooledTopNScannerPrototype
Generic2AggPooledTopNScannerPrototype
HeapBasedTopNAlgorithm	Heap based topn algorithm that handles aggregates on dimension extractions and numeric typed dimension columns.
Historical1SimpleDoubleAggPooledTopNScannerPrototype
HistoricalSingleValueDimSelector1SimpleDoubleAggPooledTopNScannerPrototype
InvertedTopNMetricSpec
LegacyTopNMetricSpec
LexicographicTopNMetricSpec
NumericTopNMetricSpec
PooledTopNAlgorithm	This TopNAlgorithm is highly specialized for processing aggregates on string columns that are ColumnCapabilities.isDictionaryEncoded() and ColumnCapabilities.areDictionaryValuesUnique().
PooledTopNAlgorithm.PooledTopNParams
PooledTopNAlgorithm.PooledTopNParams.Builder
TimeExtractionTopNAlgorithm
TopNAlgorithmSelector
TopNBinaryFn
TopNLexicographicResultBuilder
TopNMapFn
TopNNumericResultBuilder
TopNParams
TopNQuery
TopNQueryBuilder	A Builder for TopNQuery.
TopNQueryConfig
TopNQueryEngine
TopNQueryQueryToolChest
TopNQueryRunnerFactory
TopNResultValue