| /* DefaultActivationGroup.java -- Default activation group. |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.java.rmi.activation; |
| |
| import gnu.java.rmi.server.ActivatableServerRef; |
| import gnu.java.rmi.server.UnicastServer; |
| |
| import java.lang.reflect.Constructor; |
| import java.rmi.MarshalledObject; |
| import java.rmi.Remote; |
| import java.rmi.RemoteException; |
| import java.rmi.activation.ActivationDesc; |
| import java.rmi.activation.ActivationException; |
| import java.rmi.activation.ActivationGroup; |
| import java.rmi.activation.ActivationGroupID; |
| import java.rmi.activation.ActivationID; |
| import java.rmi.activation.UnknownObjectException; |
| |
| /** |
| * The default activation group class. This activation group assumes that |
| * all classes are accessible via current thread context class loader. |
| * The remote class loading is not supported for security reasons. The |
| * activation always occurs in the current jre. |
| * |
| * @author Audrius Meskauskas (audriusa@Bioinformatics.org) |
| */ |
| public class DefaultActivationGroup |
| extends ActivationGroup |
| { |
| /** |
| * Use the serialVersionUID for interoperability. |
| */ |
| private static final long serialVersionUID = 1; |
| |
| /** |
| * Used during the group creation (required constructor). |
| */ |
| static final Class[] cConstructorTypes = new Class[] |
| { |
| ActivationID.class, |
| MarshalledObject.class |
| }; |
| |
| |
| /** |
| * Create the new default activation group. |
| * |
| * @param id the group activation id. |
| * @param data may contain the group initialization data (unused and can be |
| * null) |
| * @throws RemoteException if the super constructor does |
| */ |
| public DefaultActivationGroup(ActivationGroupID id, MarshalledObject data) |
| throws RemoteException |
| { |
| super(id); |
| } |
| |
| |
| /** |
| * May be overridden and used as a hook. This method is called each time |
| * the new object is instantiated. |
| */ |
| public void activeObject(ActivationID id, Remote obj) |
| throws ActivationException, UnknownObjectException, RemoteException |
| { |
| // Nothing to do (the monitor is already notified in newInstance) |
| } |
| |
| /** |
| * Create the new instance of the object, using the class name and location |
| * information, stored in the passed descriptor. The method expects the object |
| * class to have the two parameter constructor, the first parameter being the |
| * {@link ActivationID} and the second the {@link MarshalledObject}. |
| * |
| * @param id the object activation id |
| * @param desc the activation descriptor, providing the information, necessary |
| * to create and activate the object |
| * @return the marshalled object, containing the exported stub of the created |
| * object |
| * @throws ActivationException if the activation fails due any reason |
| */ |
| public MarshalledObject newInstance(ActivationID id, ActivationDesc desc) |
| throws ActivationException, RemoteException |
| { |
| try |
| { |
| if (ActivationSystemTransient.debug) |
| System.out.println("Instantiating "+desc.getClassName()); |
| |
| Remote object; |
| Class objectClass; |
| |
| ClassLoader loader = Thread.currentThread().getContextClassLoader(); |
| objectClass = loader.loadClass(desc.getClassName()); |
| Constructor constructor = objectClass.getConstructor(cConstructorTypes); |
| object = (Remote) constructor.newInstance( |
| new Object[] { id, desc.getData() }); |
| |
| // Make the object accessible and create the stub. |
| ActivatableServerRef ref = UnicastServer.getActivatableRef(id); |
| Remote stub = ref.exportObject(object); |
| |
| MarshalledObject marsh = new MarshalledObject(stub); |
| |
| // Notify the activation monitor. |
| activeObject(id, marsh); |
| |
| // Make call to the hook that may be overridden. |
| activeObject(id, stub); |
| |
| return marsh; |
| } |
| catch (Exception e) |
| { |
| ActivationException acex = new ActivationException( |
| "Unable to activate "+ desc.getClassName() |
| + " from "+ desc.getLocation(), e); |
| throw acex; |
| } |
| } |
| |
| } |