CoderFactory (Google Cloud Dataflow SDK 1.9.1 API)

Google Cloud Dataflow SDK for Java, version 1.9.1

Warning: Dataflow SDK 1.x for Java is unsupported as of October 16, 2018. See Migrating from Dataflow SDK 1.x for Java for migration guidance.

Note: If you are using Cloud Dataflow SDK version 2.x, see the Apache Beam API reference documentation.

com.google.cloud.dataflow.sdk.coders

Interface CoderFactory

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  public interface CoderFactory

  A CoderFactory creates coders and decomposes values. It may operate on a parameterized type, such as List, in which case the create(java.util.List<? extends com.google.cloud.dataflow.sdk.coders.Coder<?>>) method accepts a list of coders to use for the type parameters.

• • Method Summary

    All Methods Instance Methods Abstract Methods 

    Modifier and Type	Method and Description
    Coder<?>	create(List<? extends Coder<?>> componentCoders) Returns a Coder<?>, given argument coder to use for values of a particular type, given the Coders for each of the type's generic parameter types.
    List<Object>	getInstanceComponents(Object value) Returns a list of objects contained in value, one per type argument, or null if none can be determined.

• • Method Detail

    • create

      Coder<?> create(List<? extends Coder<?>> componentCoders)

      Returns a Coder<?>, given argument coder to use for values of a particular type, given the Coders for each of the type's generic parameter types.

    • getInstanceComponents

      List<Object> getInstanceComponents(Object value)

      Returns a list of objects contained in value, one per type argument, or null if none can be determined. The list of returned objects should be the same size as the list of coders required by create(java.util.List<? extends com.google.cloud.dataflow.sdk.coders.Coder<?>>).