java.rmi.server

Class UnicastRemoteObject

java.lang.Object

java.rmi.server.RemoteObject

java.rmi.server.RemoteServer

java.rmi.server.UnicastRemoteObject

All Implemented Interfaces:

java.io.Serializable, java.rmi.Remote

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

Constructors

Modifier	Constructor and Description
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

Methods

Modifier and Type	Method and Description
java.lang.Object	clone() This method may be called to create a new copy of the Object.
static RemoteStub	exportObject(java.rmi.Remote obj) Export object, making it available for the remote calls at the anonymous port.
static java.rmi.Remote	exportObject(java.rmi.Remote obj, int port) Export object, making it available for the remote calls at the specified port.
static java.rmi.Remote	exportObject(java.rmi.Remote obj, int port, RMIClientSocketFactory csf, RMIServerSocketFactory ssf) FIXME
static boolean	unexportObject(java.rmi.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 java.rmi.RemoteException

Create and export new remote object without specifying the port value.

Throws:

java.rmi.RemoteException - if the attempt to export the object failed.

UnicastRemoteObject

protected UnicastRemoteObject(int port)
                       throws java.rmi.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:

java.rmi.RemoteException - if the attempt to export the object failed.

UnicastRemoteObject

protected UnicastRemoteObject(int port,
                   RMIClientSocketFactory clientSocketFactory,
                   RMIServerSocketFactory serverSocketFactory)
                       throws java.rmi.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:

java.rmi.RemoteException - if the attempt to export the object failed.

UnicastRemoteObject

protected UnicastRemoteObject(RemoteRef ref)
                       throws java.rmi.RemoteException

Throws:

java.rmi.RemoteException

Method Detail

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Description copied from class: java.lang.Object

This method may be called to create a new copy of the Object. The typical behavior is as follows:

• o == o.clone() is false
• o.getClass() == o.clone().getClass() is true
• o.equals(o) is true

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 java.lang.Object

Returns:

a copy of the Object

Throws:

java.lang.CloneNotSupportedException - If this Object does not implement Cloneable

See Also:

Cloneable

exportObject

public static RemoteStub exportObject(java.rmi.Remote obj)
                               throws java.rmi.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:

java.rmi.RemoteException - if the attempt to export the object failed.

exportObject

public static java.rmi.Remote exportObject(java.rmi.Remote obj,
                           int port)
                                    throws java.rmi.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:

java.rmi.RemoteException - if the attempt to export the object failed.

exportObject

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

FIXME

Throws:

java.rmi.RemoteException

unexportObject

public static boolean unexportObject(java.rmi.Remote obj,
                     boolean force)
                              throws java.rmi.NoSuchObjectException

Throws:

java.rmi.NoSuchObjectException