Enum Class QueuePolicyOption

java.lang.Object
java.lang.Enum<QueuePolicyOption>
org.osgi.util.pushstream.QueuePolicyOption
All Implemented Interfaces:
Serializable, Comparable<QueuePolicyOption>, Constable

public enum QueuePolicyOption extends Enum<QueuePolicyOption>
QueuePolicyOption provides a standard set of simple QueuePolicy implementations.
See Also:
  • Enum Constant Details

    • DISCARD_OLDEST

      public static final QueuePolicyOption DISCARD_OLDEST
      Attempt to add the supplied event to the queue. If the queue is unable to immediately accept the value then discard the value at the head of the queue and try again. Repeat this process until the event is enqueued.
    • BLOCK

      public static final QueuePolicyOption BLOCK
      Attempt to add the supplied event to the queue, blocking until the enqueue is successful.
    • FAIL

      public static final QueuePolicyOption FAIL
      Attempt to add the supplied event to the queue, throwing an exception if the queue is full.
  • Method Details

    • values

      public static QueuePolicyOption[] 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 QueuePolicyOption 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
    • getPolicy

      public abstract <T, U extends BlockingQueue<PushEvent<? extends T>>> QueuePolicy<T,U> getPolicy()
      Returns:
      a QueuePolicy implementation