org.apache.beam.sdk.extensions.sketching

Class ApproximateDistinct.PerKeyDistinct<K,V>

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<KV<K,V>>,PCollection<KV<K,Long>>>

org.apache.beam.sdk.extensions.sketching.ApproximateDistinct.PerKeyDistinct<K,V>

Type Parameters:

K - type of the keys mapping the elements

V - type of the values being combined per key

All Implemented Interfaces:

Serializable, HasDisplayData

Enclosing class:

ApproximateDistinct

public abstract static class ApproximateDistinct.PerKeyDistinct<K,V>
extends PTransform<PCollection<KV<K,V>>,PCollection<KV<K,Long>>>

Implementation of ApproximateDistinct.perKey().

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.beam.sdk.transforms.PTransform

name

Constructor Summary

Constructors

Constructor and Description
PerKeyDistinct()

Method Summary

Modifier and Type	Method and Description
PCollection<KV<K,Long>>	expand(PCollection<KV<K,V>> input)
ApproximateDistinct.PerKeyDistinct<K,V>	withPrecision(int p)
ApproximateDistinct.PerKeyDistinct<K,V>	withSparsePrecision(int sp)

Methods inherited from class org.apache.beam.sdk.transforms.PTransform

getAdditionalInputs, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, populateDisplayData, toString, validate

Methods inherited from class java.lang.Object

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

Constructor Detail

PerKeyDistinct

public PerKeyDistinct()

Method Detail

withPrecision

public ApproximateDistinct.PerKeyDistinct<K,V> withPrecision(int p)

withSparsePrecision

public ApproximateDistinct.PerKeyDistinct<K,V> withSparsePrecision(int sp)

expand

public PCollection<KV<K,Long>> expand(PCollection<KV<K,V>> input)

Specified by:

expand in class PTransform<PCollection<KV<K,V>>,PCollection<KV<K,Long>>>