Enum JoinOutFieldsMode

java.lang.Object
java.lang.Enum<JoinOutFieldsMode>
org.apache.storm.trident.JoinOutFieldsMode
All Implemented Interfaces:
Serializable, Comparable<JoinOutFieldsMode>, java.lang.constant.Constable

public enum JoinOutFieldsMode extends Enum<JoinOutFieldsMode>
This enum defines how the output fields of JOIN is constructed.

If user specifies COMPACT while calling JOIN, the tuples emitted from the join will contain: First, the list of join fields. Please note that joining fields are exposed only once from emitted tuples. Next, a list of all non-join fields from all streams, in order of how the streams were passed to the join method.

If user specifies PRESERVE while calling JOIN, the tuples emitted from the join will contain: a list of all fields from all streams, in order of how the streams were passed to the join method.

  • Enum Constant Details

  • Method Details

    • values

      public static JoinOutFieldsMode[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.
      Returns:
      an array containing the constants of this enum type, in the order they are declared
    • valueOf

      public static JoinOutFieldsMode valueOf(String name)
      Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
      Parameters:
      name - the name of the enum constant to be returned.
      Returns:
      the enum constant with the specified name
      Throws:
      IllegalArgumentException - if this enum type has no constant with the specified name
      NullPointerException - if the argument is null