Package jakarta.enterprise.event

Enum Class Reception

java.lang.Object
java.lang.Enum<Reception>
jakarta.enterprise.event.Reception
All Implemented Interfaces:
Serializable, Comparable<Reception>, Constable
public enum Reception extends Enum<Reception>

Distinguishes conditional observer methods from observer methods which are always notified.

A conditional observer method is an observer method which is notified of an event only if an instance of the bean that defines the observer method already exists in the current context.

Beans with scope @Dependent may not have conditional observer methods.

Author:
Gavin King, Dan Allen, David Allen

  • Enum Constant Details

    • IF_EXISTS

      public static final Reception IF_EXISTS

      Specifies that an observer method is only called if the current instance of the bean declaring the observer method already exists.

      If there is no active context for the scope to which the bean declaring this observer method belongs, then the observer method is not called.

    • ALWAYS

      public static final Reception ALWAYS
      Specifies that an observer method always receives event notifications.

  • Method Details

    • values

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

    • valueOf

      public static Reception valueOf(String name)
      Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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 class has no constant with the specified name
      NullPointerException - if the argument is null