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javax.rmi.CORBA

Interface PortableRemoteObjectDelegate

Known Implementing Classes:
PortableRemoteObjectDelegateImpl
public interface PortableRemoteObjectDelegate
A delegate, implementing the functionality, provided by the PortableRemoteObject. The default delegate can be altered by setting the system property "javax.rmi.CORBA.PortableRemoteObjectClass" to the name of the alternative class that must implement PortableRemoteObjectDelegate.

Method Summary

void
connect(Remote target, Remote source)
Makes the remote object target ready for remote communication using the same communications runtime as for the passed source parameter.
void
exportObject(Remote obj)
Register the passed object with the ORB runtimes, making it remotely accessible.
Object
narrow(Object narrowFrom, Class<T> narrowTo)
Narrows the passed object to conform to the given interface or IDL type.
Remote
toStub(Remote obj)
Takes a server implementation object and returns a stub object that can be used to access that server object (target).
void
unexportObject(Remote obj)
Deregister a currently exported server object from the ORB runtimes.

Method Details

connect

public void connect(Remote target,
                    Remote source)
            throws RemoteException
Makes the remote object target ready for remote communication using the same communications runtime as for the passed source parameter. Connection normally happens implicitly when the object is sent or received as an argument on a remote method call.

The target object is connected to the same ORB as source by calling the Stub.connect(ORB) if it is a stub or by associating its tie with an ORB if it is an implementation object.

Parameters:
target - the target object that may be either an RMI/IDL stub or an exported RMI/IDL implementation object
source - the source object may also be either an RMI/IDL stub or an exported RMI/IDL implementation object.
Throws:
RemoteException - if the target is already connected to another ORB.

exportObject

public void exportObject(Remote obj)
            throws RemoteException
Register the passed object with the ORB runtimes, making it remotely accessible. When called on jre with no objects exported, creates a non-daemon thread that prevents jre from terminating until all objects are unexported. Also, such object cannot be collected by garbage collector. This is usually impemented via Util.unexportObject(Remote)
Parameters:
obj - the object to export.
Throws:
RemoteException -

narrow

public Object narrow(Object narrowFrom,
                     Class<T> narrowTo)
            throws ClassCastException
Narrows the passed object to conform to the given interface or IDL type. This method may return different instance and cannot be replaced by the direct cast.
Parameters:
narrowFrom - an object to narrow.
narrowTo - a type to that the object must be narrowed.
Returns:
On success, an object of type narrowTo or null, if narrowFrom = null.
Throws:
ClassCastException - if no narrowing is possible.

toStub

public Remote toStub(Remote obj)
            throws NoSuchObjectException
Takes a server implementation object and returns a stub object that can be used to access that server object (target). If the target is connected, the returned stub is also connected to the same ORB. If the target is unconnected, the returned stub is unconnected.
Parameters:
obj - a server side object.
Returns:
a stub object that can be used to access that server object.
Throws:
NoSuchObjectException - if a stub cannot be located for the given target.

unexportObject

public void unexportObject(Remote obj)
            throws NoSuchObjectException
Deregister a currently exported server object from the ORB runtimes. The object to becomes available for garbage collection. This is usually impemented via Util.unexportObject(Remote)
Parameters:
obj - the object to unexport.
Throws:
NoSuchObjectException - if the passed object is not currently exported.
PortableRemoteObjectDelegate.java -- Interface supporting PortableRemoteObject Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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