java.rmi.activation

Class ActivationID

  • All Implemented Interfaces:
    Serializable 

    public class ActivationID
extends Object
implements Serializable
    Activation makes use of special identifiers to denote remote objects that can be activated over time. An activation identifier (an instance of the class ActivationID) contains several pieces of information needed for activating an object:
    • a remote reference to the object's activator (a RemoteRef instance), and
    • a unique identifier (a UID instance) for the object.

    An activation identifier for an object can be obtained by registering an object with the activation system. Registration is accomplished in a few ways:

    • via the Activatable.register method
    • via the first Activatable constructor (that takes three arguments and both registers and exports the object, and
    • via the first Activatable.exportObject method that takes the activation descriptor, object and port as arguments; this method both registers and exports the object.
    Since:
    1.2
    See Also:
    Activatable, Serialized Form

    • Constructor Summary

      Constructors

      Constructor and Description
      ActivationID(Activator activator)
      The constructor for ActivationID takes a single argument, activator, that specifies a remote reference to the activator responsible for activating the object associated with this identifier.

    • Constructor Detail

      • ActivationID

        public ActivationID(Activator activator)
        The constructor for ActivationID takes a single argument, activator, that specifies a remote reference to the activator responsible for activating the object associated with this identifier. An instance of ActivationID is globally unique.
        Parameters:
        activator - reference to the activator responsible for activating the object
        Throws:
        UnsupportedOperationException - if and only if activation is not supported by this implementation
        Since:
        1.2

    • Method Detail

      • hashCode

        public int hashCode()
        Returns a hashcode for the activation id. Two identifiers that refer to the same remote object will have the same hash code.
        Overrides:
        hashCode in class  Object
        Returns:
        a hash code value for this object.
        Since:
        1.2
        See Also:
        Hashtable

      • equals

        public boolean equals(Object obj)
        Compares two activation ids for content equality. Returns true if both of the following conditions are true: 1) the unique identifiers equivalent (by content), and 2) the activator specified in each identifier refers to the same remote object.
        Overrides:
        equals in class  Object
        Parameters:
        obj - the Object to compare with
        Returns:
        true if these Objects are equal; false otherwise.
        Since:
        1.2
        See Also:
        Hashtable