java.rmi.server
Class UnicastRemoteObject

java.lang.Object
  extended by java.rmi.server.RemoteObject
      extended by java.rmi.server.RemoteServer
          extended by java.rmi.server.UnicastRemoteObject
All Implemented Interfaces:
Serializable, Remote
Direct Known Subclasses:
ActivationGroup

public class UnicastRemoteObject
extends RemoteServer

This class obtains stub that communicates with the remote object.

See Also:
Serialized Form

Field Summary
 
Fields inherited from class java.rmi.server.RemoteObject
ref
 
Constructor Summary
protected UnicastRemoteObject()
          Create and export new remote object without specifying the port value.
protected UnicastRemoteObject(int port)
          Create and export the new remote object, making it available at the given port, local host.
protected UnicastRemoteObject(int port, RMIClientSocketFactory clientSocketFactory, RMIServerSocketFactory serverSocketFactory)
          Create and export the new remote object, making it available at the given port, using sockets, produced by the specified factories.
protected UnicastRemoteObject(RemoteRef ref)
           
 
Method Summary
 Object clone()
          This method may be called to create a new copy of the Object.
static RemoteStub exportObject(Remote obj)
          Export object, making it available for the remote calls at the anonymous port.
static Remote exportObject(Remote obj, int port)
          Export object, making it available for the remote calls at the specified port.
static Remote exportObject(Remote obj, int port, RMIClientSocketFactory csf, RMIServerSocketFactory ssf)
          FIXME
static boolean unexportObject(Remote obj, boolean force)
           
 
Methods inherited from class java.rmi.server.RemoteServer
getClientHost, getLog, setLog
 
Methods inherited from class java.rmi.server.RemoteObject
equals, getRef, hashCode, toString, toStub
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

UnicastRemoteObject

protected UnicastRemoteObject()
                       throws RemoteException
Create and export new remote object without specifying the port value.

Throws:
RemoteException - if the attempt to export the object failed.

UnicastRemoteObject

protected UnicastRemoteObject(int port)
                       throws RemoteException
Create and export the new remote object, making it available at the given port, local host.

Parameters:
port - the port, on that the object should become available. Zero means anonymous port.
Throws:
RemoteException - if the attempt to export the object failed.

UnicastRemoteObject

protected UnicastRemoteObject(int port,
                              RMIClientSocketFactory clientSocketFactory,
                              RMIServerSocketFactory serverSocketFactory)
                       throws RemoteException
Create and export the new remote object, making it available at the given port, using sockets, produced by the specified factories.

Parameters:
port - the port, on that the object should become available. Zero means anonymous port.
clientSocketFactory - the client socket factory
serverSocketFactory - the server socket factory
Throws:
RemoteException - if the attempt to export the object failed.

UnicastRemoteObject

protected UnicastRemoteObject(RemoteRef ref)
                       throws RemoteException
Throws:
RemoteException
Method Detail

clone

public Object clone()
             throws CloneNotSupportedException
Description copied from class: Object
This method may be called to create a new copy of the Object. The typical behavior is as follows:

However, these are not strict requirements, and may be violated if necessary. Of the three requirements, the last is the most commonly violated, particularly if the subclass does not override Object.equals(Object).

If the Object you call clone() on does not implement Cloneable (which is a placeholder interface), then a CloneNotSupportedException is thrown. Notice that Object does not implement Cloneable; this method exists as a convenience for subclasses that do.

Object's implementation of clone allocates space for the new Object using the correct class, without calling any constructors, and then fills in all of the new field values with the old field values. Thus, it is a shallow copy. However, subclasses are permitted to make a deep copy.

All array types implement Cloneable, and override this method as follows (it should never fail):

 public Object clone()
 {
   try
     {
       super.clone();
     }
   catch (CloneNotSupportedException e)
     {
       throw new InternalError(e.getMessage());
     }
 }
 

Overrides:
clone in class Object
Returns:
a copy of the Object
Throws:
CloneNotSupportedException - If this Object does not implement Cloneable
See Also:
Cloneable

exportObject

public static RemoteStub exportObject(Remote obj)
                               throws RemoteException
Export object, making it available for the remote calls at the anonymous port. This method returns the instance of the abstract class, not an interface. Hence it will not work with the proxy stubs that are supported since jdk 1.5 (such stubs cannot be derived from the RemoteStub). Only use this method if you are sure that the stub class will be accessible.

Parameters:
obj - the object being exported.
Returns:
the remote object stub
Throws:
RemoteException - if the attempt to export the object failed.

exportObject

public static Remote exportObject(Remote obj,
                                  int port)
                           throws RemoteException
Export object, making it available for the remote calls at the specified port. Since jdk 1.5 this method does not longer require the stub class to be present. If such class is not found, the stub is replaced by the dynamically constructed proxy class. No attempt to find and load the stubs is made if the system property java.rmi.server.ignoreStubClasses is set to true (set to reduce the starting time if the stubs are surely not present and exclusively 1.2 RMI is used).

Parameters:
obj - the object being exported.
port - the remote object port
Returns:
the remote object stub
Throws:
RemoteException - if the attempt to export the object failed.

exportObject

public static Remote exportObject(Remote obj,
                                  int port,
                                  RMIClientSocketFactory csf,
                                  RMIServerSocketFactory ssf)
                           throws RemoteException
FIXME

Throws:
RemoteException

unexportObject

public static boolean unexportObject(Remote obj,
                                     boolean force)
                              throws NoSuchObjectException
Throws:
NoSuchObjectException