Package org.apache.beam.runners.spark

Class SparkContextOptions.EmptyListenersList

java.lang.Object

org.apache.beam.runners.spark.SparkContextOptions.EmptyListenersList

All Implemented Interfaces:

DefaultValueFactory<List<org.apache.spark.streaming.api.java.JavaStreamingListener>>

Enclosing interface:

SparkContextOptions

public static class SparkContextOptions.EmptyListenersList
extends Object
implements DefaultValueFactory<List<org.apache.spark.streaming.api.java.JavaStreamingListener>>

Returns an empty list, to avoid handling null.

Constructor Summary

Constructors

Constructor	Description
EmptyListenersList()

Method Summary

Modifier and Type	Method	Description
List<org.apache.spark.streaming.api.java.JavaStreamingListener>	create(PipelineOptions options)	Creates a default value for a getter marked with Default.InstanceFactory.

Methods inherited from class java.lang.Object

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

Constructor Details

EmptyListenersList

public EmptyListenersList()

Method Details

create

public List<org.apache.spark.streaming.api.java.JavaStreamingListener> create(PipelineOptions options)

Description copied from interface: DefaultValueFactory

Creates a default value for a getter marked with Default.InstanceFactory.

Specified by:

create in interface DefaultValueFactory<List<org.apache.spark.streaming.api.java.JavaStreamingListener>>

Parameters:

options - The current pipeline options.

Returns:

The default value to be used for the annotated getter.