mirror of git://gcc.gnu.org/git/gcc.git
138 lines
5.2 KiB
Java
138 lines
5.2 KiB
Java
/* PortableRemoteObjectDelegate.java -- Interface supporting PortableRemoteObject
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Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.rmi.CORBA;
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import java.rmi.NoSuchObjectException;
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import java.rmi.Remote;
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import java.rmi.RemoteException;
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/**
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* A delegate, implementing the functionality, provided by the
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* {@link PortableRemoteObject}.
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*
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* The default delegate can be altered by setting the system property
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* "javax.rmi.CORBA.PortableRemoteObjectClass" to the name of the alternative
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* class that must implement {@link PortableRemoteObjectDelegate}.
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*
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* @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
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*/
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public interface PortableRemoteObjectDelegate
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{
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/**
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* <p>
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* Makes the remote object <code>target</code> ready for remote
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* communication using the same communications runtime as for the passed
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* <code>source</code> parameter. Connection normally happens implicitly
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* when the object is sent or received as an argument on a remote method call.
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* </p>
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* <p>
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* The target object is connected to the same ORB as source by calling the
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* {@link Stub#connect} if it is a stub or by associating its tie with an ORB
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* if it is an implementation object.
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* </p>
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*
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* @param target the target object that may be either an RMI/IDL stub or an
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* exported RMI/IDL implementation object
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* @param source the source object may also be either an RMI/IDL stub or an
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* exported RMI/IDL implementation object.
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*
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* @throws RemoteException if the target is already connected to another ORB.
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*/
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void connect(Remote target, Remote source)
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throws RemoteException;
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/**
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* Register the passed object with the ORB runtimes, making it remotely
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* accessible. When called on jre with no objects exported, creates a
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* non-daemon thread that prevents jre from terminating until all objects are
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* unexported. Also, such object cannot be collected by garbage collector.
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* This is usually impemented via {@link Util#unexportObject}
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*
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* @param obj the object to export.
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*
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* @throws RemoteException
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*/
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void exportObject(Remote obj)
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throws RemoteException;
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/**
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* Narrows the passed object to conform to the given interface or IDL type.
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* This method may return different instance and cannot be replaced by the
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* direct cast.
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*
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* @param narrowFrom an object to narrow.
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* @param narrowTo a type to that the object must be narrowed.
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*
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* @return On success, an object of type narrowTo or null, if narrowFrom =
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* null.
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*
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* @throws ClassCastException if no narrowing is possible.
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*/
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Object narrow(Object narrowFrom, Class narrowTo)
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throws ClassCastException;
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/**
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* Takes a server implementation object and returns a stub object that can be
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* used to access that server object (target). If the target is connected, the
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* returned stub is also connected to the same ORB. If the target is
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* unconnected, the returned stub is unconnected.
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*
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* @param obj a server side object.
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* @return a stub object that can be used to access that server object.
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*
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* @throws NoSuchObjectException if a stub cannot be located for the given
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* target.
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*/
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Remote toStub(Remote obj)
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throws NoSuchObjectException;
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/**
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* Deregister a currently exported server object from the ORB runtimes. The
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* object to becomes available for garbage collection. This is usually
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* impemented via {@link Util#unexportObject}
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*
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* @param obj the object to unexport.
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*
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* @throws NoSuchObjectException if the passed object is not currently
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* exported.
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*/
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void unexportObject(Remote obj)
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throws NoSuchObjectException;
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}
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