001/* ActivationInstantiator.java --
002   Copyright (c) 1996, 1997, 1998, 1999, 2004  Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010 
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package java.rmi.activation;
040
041import java.rmi.MarshalledObject;
042import java.rmi.Remote;
043import java.rmi.RemoteException;
044
045/**
046 * The implementation of this interface creates (instantiates) the new remote
047 * objects in response to the activation request. The instantiator is returned
048 * by the {@link ActivationGroup} that calls 
049 * {@link ActivationSystem#activeGroup(ActivationGroupID, ActivationInstantiator, long)}.
050 */
051public interface ActivationInstantiator
052  extends Remote
053{
054  /**
055   * Creates and instantiate a new remote object. This method performs the
056   * following tasks:
057   * <ul>
058   * <li>Finds and loads (if not already loaded) the class of the object being
059   * instantiated</li>
060   * <li>Creates an instance of the object using its special two parameter
061   * activation constructor, the first parameter being the {@link ActivationID}
062   * and the second the {@link MarshalledObject}.</li>
063   * 
064   * @param id the id of the object being instantiated
065   * @param desc the activation descriptor being instantiated
066   * @return the MarshalledObject, containing the stub to the newly created
067   *         object.
068   * @throws ActivationException if the activation fails
069   * @throws RemoteException if the remote call fails
070   */
071  MarshalledObject<? extends Remote> newInstance (ActivationID id, ActivationDesc desc)
072    throws ActivationException, RemoteException;
073}