org.apache.druid.query.topn

Class BaseTopNAlgorithm.BaseArrayProvider<T>

java.lang.Object

org.apache.druid.query.topn.BaseTopNAlgorithm.BaseArrayProvider<T>

All Implemented Interfaces:

TopNMetricSpecBuilder<T>

Direct Known Subclasses:

BaseTopNAlgorithm.AggregatorArrayProvider

Enclosing class:

BaseTopNAlgorithm<DimValSelector,DimValAggregateStore,Parameters extends TopNParams>

protected abstract static class BaseTopNAlgorithm.BaseArrayProvider<T>
extends Object
implements TopNMetricSpecBuilder<T>

Constructor Summary

Constructors

Constructor and Description
BaseArrayProvider(DimensionSelector dimSelector, TopNQuery query, StorageAdapter storageAdapter)

Method Summary

Modifier and Type	Method and Description
Pair<Integer,Integer>	computeStartEnd(int cardinality)
void	ignoreAfterThreshold()
void	ignoreFirstN(int n)
void	keepOnlyN(int n)
void	skipTo(String previousStop)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.druid.query.topn.TopNMetricSpecBuilder

build

Constructor Detail

BaseArrayProvider

public BaseArrayProvider(DimensionSelector dimSelector,
                         TopNQuery query,
                         StorageAdapter storageAdapter)

Method Detail

skipTo

public void skipTo(String previousStop)

Specified by:

skipTo in interface TopNMetricSpecBuilder<T>

ignoreAfterThreshold

public void ignoreAfterThreshold()

Specified by:

ignoreAfterThreshold in interface TopNMetricSpecBuilder<T>

ignoreFirstN

public void ignoreFirstN(int n)

Specified by:

ignoreFirstN in interface TopNMetricSpecBuilder<T>

keepOnlyN

public void keepOnlyN(int n)

Specified by:

keepOnlyN in interface TopNMetricSpecBuilder<T>

computeStartEnd

public Pair<Integer,Integer> computeStartEnd(int cardinality)