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/*
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* Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package java.rmi.activation;
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import java.rmi.MarshalledObject;
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import java.rmi.Remote;
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import java.rmi.RemoteException;
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/**
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* An <code>ActivationInstantiator</code> is responsible for creating
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* instances of "activatable" objects. A concrete subclass of
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* <code>ActivationGroup</code> implements the <code>newInstance</code>
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* method to handle creating objects within the group.
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*
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* @author Ann Wollrath
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* @see ActivationGroup
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* @since 1.2
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*/
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public interface ActivationInstantiator extends Remote {
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/**
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* The activator calls an instantiator's <code>newInstance</code>
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* method in order to recreate in that group an object with the
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* activation identifier, <code>id</code>, and descriptor,
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* <code>desc</code>. The instantiator is responsible for: <ul>
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*
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* <li> determining the class for the object using the descriptor's
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* <code>getClassName</code> method,
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*
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* <li> loading the class from the code location obtained from the
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* descriptor (using the <code>getLocation</code> method),
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*
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* <li> creating an instance of the class by invoking the special
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* "activation" constructor of the object's class that takes two
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* arguments: the object's <code>ActivationID</code>, and the
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* <code>MarshalledObject</code> containing object specific
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* initialization data, and
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*
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* <li> returning a MarshalledObject containing the stub for the
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* remote object it created </ul>
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*
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* @param id the object's activation identifier
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* @param desc the object's descriptor
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* @return a marshalled object containing the serialized
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* representation of remote object's stub
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* @exception ActivationException if object activation fails
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* @exception RemoteException if remote call fails
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* @since 1.2
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*/
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public MarshalledObject<? extends Remote> newInstance(ActivationID id,
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ActivationDesc desc)
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throws ActivationException, RemoteException;
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}
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