com.google.cloud.dataflow.sdk.util

Class Serializer

java.lang.Object

com.google.cloud.dataflow.sdk.util.Serializer

public final class Serializer
extends Object

Utility for converting objects between Java and Cloud representations.

Constructor Summary

Constructors

Constructor and Description
Serializer()

Method Summary

Modifier and Type	Method and Description
static <T> T	deserialize(Map<String,Object> serialized, Class<T> clazz) Deserializes an object from a Dataflow structured encoding (represented in Java as a map).

Methods inherited from class java.lang.Object

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

Constructor Detail

Serializer

public Serializer()

Method Detail

deserialize

public static <T> T deserialize(Map<String,Object> serialized,
                                Class<T> clazz)

Deserializes an object from a Dataflow structured encoding (represented in Java as a map).

The standard Dataflow SDK object serialization protocol is based on JSON. Data is typically encoded as a JSON object whose fields represent the object's data.

The actual deserialization is performed by Jackson, which can deserialize public fields, use JavaBean setters, or use injection annotations to indicate how to construct the object. The ObjectMapper used is configured to use the "@type" field as the name of the class to instantiate (supporting polymorphic types), and may be further configured by annotations or via #registerModule.

Parameters:

serialized - the object in untyped decoded form (i.e. a nested Map)

clazz - the expected object class

See Also:

Jackson Data-Binding, Jackson-Annotations