Validation.Required (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. After August 12, 2020, you can use unsupported SDKs temporarily while you upgrade your pipelines. For more information, see Using an unsupported SDK.

For information on migrating from the 1.x SDK, see Migrating from Dataflow SDK 1.x for Java.

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

com.google.cloud.dataflow.sdk.options

Annotation Type Validation.Required

• ---

  
  

  @Target(value=METHOD)
   @Retention(value=RUNTIME)
   @Documented
  public static @interface Validation.Required

  This criteria specifies that the value must be not null. Note that this annotation should only be applied to methods that return nullable objects.

• • Optional Element Summary

    Optional Elements 

    Modifier and Type	Optional Element and Description
    String[]	groups The groups that the annotated attribute is a member of.

• • Element Detail

    • groups

      public abstract String[] groups

      The groups that the annotated attribute is a member of. A member can be in 0 or more groups. Members not in any groups are considered to be in a group consisting exclusively of themselves. At least one member of a group must be non-null if the options are to be valid.

      Default:

      {}