com.google.cloud.dataflow.sdk.transforms

Class Sum.SumLongFn

java.lang.Object

com.google.cloud.dataflow.sdk.transforms.Sum.SumLongFn

All Implemented Interfaces:

SerializableFunction<java.lang.Iterable<java.lang.Long>,java.lang.Long>, java.io.Serializable

Enclosing class:

Sum

public static class Sum.SumLongFn
extends java.lang.Object
implements SerializableFunction<java.lang.Iterable<java.lang.Long>,java.lang.Long>

A SerializableFunction that computes the sum of an Iterable of Longs, useful as an argument to Combine.globally(com.google.cloud.dataflow.sdk.transforms.SerializableFunction<java.lang.Iterable<V>, V>) or Combine.perKey(com.google.cloud.dataflow.sdk.transforms.SerializableFunction<java.lang.Iterable<V>, V>).

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Sum.SumLongFn()

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Long	apply(java.lang.Iterable<java.lang.Long> input) Returns the result of invoking this function on the given input.

Methods inherited from class java.lang.Object

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

Constructor Detail

Sum.SumLongFn

public Sum.SumLongFn()

Method Detail

apply

public java.lang.Long apply(java.lang.Iterable<java.lang.Long> input)

Description copied from interface: SerializableFunction

Returns the result of invoking this function on the given input.

Specified by:

apply in interface SerializableFunction<java.lang.Iterable<java.lang.Long>,java.lang.Long>