| /* |
| * Copyright (c) 1997, 2005, Oracle and/or its affiliates. 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.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 |
| * @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> |
| * |
| * <p>In order for activation to be successful, one of the following requirements |
| * must be met, otherwise {@link ActivationException} is thrown: |
| * |
| * <ul><li>The class to be activated and the special activation constructor are both public, |
| * and the class resides in a package that is |
| * {@linkplain java.lang.reflect.Module#isExported(String,java.lang.reflect.Module) exported} |
| * to at least the {@code java.rmi} module; or |
| * |
| * <li>The class to be activated resides in a package that is |
| * {@linkplain java.lang.reflect.Module#isOpen(String,java.lang.reflect.Module) open} |
| * to at least the {@code java.rmi} module. |
| * </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; |
| } |