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. 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.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:

      {}