/*
* Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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*/
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
* @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;
}