/*
* Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package java.rmi.activation;
import java.rmi.MarshalledObject;
import java.rmi.Remote;
import java.rmi.RemoteException;
/**
* An <code>ActivationInstantiator</code> is responsible for creating
* instances of "activatable" objects. A concrete subclass of
* <code>ActivationGroup</code> implements the <code>newInstance</code>
* method to handle creating objects within the group.
*
* @author Ann Wollrath
* @version 1.23, 05/05/07
* @see ActivationGroup
* @since 1.2
*/
public interface ActivationInstantiator extends Remote {
/**
* The activator calls an instantiator's <code>newInstance</code>
* method in order to recreate in that group an object with the
* activation identifier, <code>id</code>, and descriptor,
* <code>desc</code>. The instantiator is responsible for: <ul>
*
* <li> determining the class for the object using the descriptor's
* <code>getClassName</code> method,
*
* <li> loading the class from the code location obtained from the
* descriptor (using the <code>getLocation</code> method),
*
* <li> creating an instance of the class by invoking the special
* "activation" constructor of the object's class that takes two
* arguments: the object's <code>ActivationID</code>, and the
* <code>MarshalledObject</code> containing object specific
* initialization data, and
*
* <li> returning a MarshalledObject containing the stub for the
* remote object it created </ul>
*
* @param id the object's activation identifier
* @param desc the object's descriptor
* @return a marshalled object containing the serialized
* representation of remote object's stub
* @exception ActivationException if object activation fails
* @exception RemoteException if remote call fails
* @since 1.2
*/
public MarshalledObject<? extends Remote> newInstance(ActivationID id,
ActivationDesc desc)
throws ActivationException, RemoteException;
}
|