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77 lines
2.2 KiB
77 lines
2.2 KiB
/*
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* Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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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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