org.apache.beam.sdk.extensions.jackson

Class AsJsons<InputT>

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<InputT>,org.apache.beam.sdk.values.PCollection<java.lang.String>>

org.apache.beam.sdk.extensions.jackson.AsJsons<InputT>

All Implemented Interfaces:

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

public class AsJsons<InputT>
extends org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<InputT>,org.apache.beam.sdk.values.PCollection<java.lang.String>>

PTransform for serializing objects to JSON Strings. Transforms a PCollection<InputT> into a PCollection of JSON Strings representing objects in the original PCollection using Jackson.

See Also:

Serialized Form

Field Summary

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

name

Method Summary

Modifier and Type	Method and Description
org.apache.beam.sdk.values.PCollection<java.lang.String>	expand(org.apache.beam.sdk.values.PCollection<InputT> input)
static <OutputT> AsJsons<OutputT>	of(java.lang.Class<? extends OutputT> outputClass) Creates a AsJsons PTransform that will transform a PCollection<InputT> into a PCollection of JSON Strings representing those objects using a Jackson ObjectMapper.
AsJsons<InputT>	withMapper(com.fasterxml.jackson.databind.ObjectMapper mapper) Use custom Jackson ObjectMapper instead of the default one.

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

Method Detail

of

public static <OutputT> AsJsons<OutputT> of(java.lang.Class<? extends OutputT> outputClass)

Creates a AsJsons PTransform that will transform a PCollection<InputT> into a PCollection of JSON Strings representing those objects using a Jackson ObjectMapper.

withMapper

public AsJsons<InputT> withMapper(com.fasterxml.jackson.databind.ObjectMapper mapper)

Use custom Jackson ObjectMapper instead of the default one.

expand

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

Specified by:

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