org.apache.beam.sdk.extensions.zetasketch

Class ApproximateCountDistinct.Globally<T>

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<T>,org.apache.beam.sdk.values.PCollection<java.lang.Long>>

org.apache.beam.sdk.extensions.zetasketch.ApproximateCountDistinct.Globally<T>

Type Parameters:

T - the type of the elements in the input PCollection

All Implemented Interfaces:

java.io.Serializable, org.apache.beam.sdk.transforms.display.HasDisplayData

Enclosing class:

ApproximateCountDistinct

public abstract static class ApproximateCountDistinct.Globally<T>
extends org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<T>,org.apache.beam.sdk.values.PCollection<java.lang.Long>>

PTransform for estimating the number of distinct elements in a PCollection.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ApproximateCountDistinct.Globally.Builder<T>

Field Summary

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

name, resourceHints

Constructor Summary

Constructors

Constructor and Description
Globally()

Method Summary

Modifier and Type	Method and Description
org.apache.beam.sdk.values.PCollection<java.lang.Long>	expand(org.apache.beam.sdk.values.PCollection<T> input)
abstract org.apache.beam.sdk.transforms.Contextful<org.apache.beam.sdk.transforms.Contextful.Fn<T,java.lang.Long>>	getMapping()
abstract int	getPrecision()
void	populateDisplayData(org.apache.beam.sdk.transforms.display.DisplayData.Builder builder)
abstract ApproximateCountDistinct.Globally.Builder<T>	toBuilder()
ApproximateCountDistinct.Globally<T>	via(org.apache.beam.sdk.transforms.ProcessFunction<T,java.lang.Long> fn)
<V> ApproximateCountDistinct.Globally<V>	withPercision(java.lang.Integer withPercision)

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

compose, compose, getAdditionalInputs, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, setResourceHints, toString, validate, validate

Methods inherited from class java.lang.Object

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

Constructor Detail

Globally

public Globally()

Method Detail

getPrecision

public abstract int getPrecision()

toBuilder

public abstract ApproximateCountDistinct.Globally.Builder<T> toBuilder()

getMapping

@Nullable
public abstract org.apache.beam.sdk.transforms.Contextful<org.apache.beam.sdk.transforms.Contextful.Fn<T,java.lang.Long>> getMapping()

via

public ApproximateCountDistinct.Globally<T> via(org.apache.beam.sdk.transforms.ProcessFunction<T,java.lang.Long> fn)

withPercision

public <V> ApproximateCountDistinct.Globally<V> withPercision(java.lang.Integer withPercision)

expand

public org.apache.beam.sdk.values.PCollection<java.lang.Long> expand(org.apache.beam.sdk.values.PCollection<T> input)

Specified by:

expand in class org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<T>,org.apache.beam.sdk.values.PCollection<java.lang.Long>>

populateDisplayData

public void populateDisplayData(org.apache.beam.sdk.transforms.display.DisplayData.Builder builder)

Specified by:

populateDisplayData in interface org.apache.beam.sdk.transforms.display.HasDisplayData

Overrides:

populateDisplayData in class org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<T>,org.apache.beam.sdk.values.PCollection<java.lang.Long>>