io.druid.query.topn

Class AlphaNumericTopNMetricSpec

java.lang.Object

io.druid.query.topn.LexicographicTopNMetricSpec

io.druid.query.topn.AlphaNumericTopNMetricSpec

All Implemented Interfaces:

Cacheable, TopNMetricSpec

public class AlphaNumericTopNMetricSpec
extends LexicographicTopNMetricSpec

Field Summary

Fields

Modifier and Type	Field and Description
protected static Comparator<String>	comparator

Constructor Summary

Constructors

Constructor and Description
AlphaNumericTopNMetricSpec(String previousStop)

Method Summary

Modifier and Type	Method and Description
<T> TopNMetricSpecBuilder<T>	configureOptimizer(TopNMetricSpecBuilder<T> builder)
byte[]	getCacheKey() Get a byte array used as a cache key.
Comparator	getComparator(List<AggregatorFactory> aggregatorSpecs, List<PostAggregator> postAggregatorSpecs)
String	toString()

Methods inherited from class io.druid.query.topn.LexicographicTopNMetricSpec

canBeOptimizedUnordered, equals, getMetricName, getPreviousStop, getResultBuilder, hashCode, initTopNAlgorithmSelector, verifyPreconditions

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

comparator

protected static Comparator<String> comparator

Constructor Detail

AlphaNumericTopNMetricSpec

public AlphaNumericTopNMetricSpec(String previousStop)

Method Detail

getComparator

public Comparator getComparator(List<AggregatorFactory> aggregatorSpecs,
                                List<PostAggregator> postAggregatorSpecs)

Specified by:

getComparator in interface TopNMetricSpec

Overrides:

getComparator in class LexicographicTopNMetricSpec

getCacheKey

public byte[] getCacheKey()

Description copied from interface: Cacheable

Get a byte array used as a cache key.

Specified by:

getCacheKey in interface Cacheable

Overrides:

getCacheKey in class LexicographicTopNMetricSpec

Returns:

a cache key

configureOptimizer

public <T> TopNMetricSpecBuilder<T> configureOptimizer(TopNMetricSpecBuilder<T> builder)

Specified by:

configureOptimizer in interface TopNMetricSpec

Overrides:

configureOptimizer in class LexicographicTopNMetricSpec

toString

public String toString()

Overrides:

toString in class LexicographicTopNMetricSpec