8f523f3a10
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From-SVN: r107049
310 lines
11 KiB
Java
310 lines
11 KiB
Java
/* UtilDelegate.java --
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Copyright (C) 2002, 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.rmi.CORBA;
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import org.omg.CORBA.Any;
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import org.omg.CORBA.BAD_PARAM;
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import org.omg.CORBA.COMM_FAILURE;
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import org.omg.CORBA.CompletionStatus;
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import org.omg.CORBA.INVALID_TRANSACTION;
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import org.omg.CORBA.INV_OBJREF;
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import org.omg.CORBA.MARSHAL;
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import org.omg.CORBA.NO_PERMISSION;
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import org.omg.CORBA.OBJECT_NOT_EXIST;
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import org.omg.CORBA.OMGVMCID;
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import org.omg.CORBA.ORB;
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import org.omg.CORBA.SystemException;
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import org.omg.CORBA.TRANSACTION_REQUIRED;
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import org.omg.CORBA.TRANSACTION_ROLLEDBACK;
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import org.omg.CORBA.TypeCode;
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import org.omg.CORBA.portable.InputStream;
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import org.omg.CORBA.portable.OutputStream;
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import java.rmi.AccessException;
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import java.rmi.MarshalException;
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import java.rmi.NoSuchObjectException;
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import java.rmi.Remote;
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import java.rmi.RemoteException;
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import java.rmi.ServerError;
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import java.rmi.ServerException;
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import java.rmi.UnexpectedException;
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import javax.transaction.InvalidTransactionException;
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import javax.transaction.TransactionRequiredException;
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import javax.transaction.TransactionRolledbackException;
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/**
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* A delegate, implementing the functionality, provided by the {@link Util}.
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*
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* The default delegate can be altered by setting the system property
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* "javax.rmi.CORBA.UtilClass" to the name of the alternative class that must
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* implement this interface.
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*
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* @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
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*/
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public interface UtilDelegate
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{
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/**
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* Used by local stubs to create a copy of the object.
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*/
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Object copyObject(Object obj, ORB orb)
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throws RemoteException;
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/**
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* Used by local stubs to create a multiple copies of the object, preserving
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* sharing accross the parameters if necessary.
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*/
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Object[] copyObjects(Object[] obj, ORB orb)
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throws RemoteException;
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/**
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* Get the value handler that Serializes Java objects to and from CDR (GIOP)
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* streams.
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*/
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ValueHandler createValueHandler();
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String getCodebase(Class clz);
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/**
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* Checks if the given stub is local.
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*/
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boolean isLocal(Stub stub)
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throws RemoteException;
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Class loadClass(String className, String remoteCodebase, ClassLoader loader)
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throws ClassNotFoundException;
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/**
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* Converts CORBA {@link SystemException} into RMI {@link RemoteException}.
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* The exception is converted as defined in the following table:
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* <p>
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* <table border = "1">
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* <tr>
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* <th>CORBA Exception</th>
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* <th>RMI Exception</th>
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* </tr>
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* <tr>
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* <td>{@link COMM_FAILURE}</td>
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* <td>{@link MarshalException}</td>
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* </tr>
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* <tr>
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* <td>{@link INV_OBJREF}</td>
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* <td>{@link NoSuchObjectException}</td>
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* </tr>
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* <tr>
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* <td>{@link NO_PERMISSION}</td>
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* <td>{@link AccessException}</td>
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* </tr>
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* <tr>
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* <td>{@link MARSHAL}</td>
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* <td>{@link MarshalException}</td>
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* </tr>
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* <tr>
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* <td>{@link BAD_PARAM} (all other cases)</td>
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* <td>{@link MarshalException}</td>
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* </tr>
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* <tr>
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* <td>{@link OBJECT_NOT_EXIST}</td>
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* <td>{@link NoSuchObjectException}</td>
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* </tr>
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* <tr>
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* <td>{@link TRANSACTION_REQUIRED}</td>
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* <td>{@link TransactionRequiredException}</td>
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* </tr>
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* <tr>
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* <td>{@link TRANSACTION_ROLLEDBACK}</td>
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* <td>{@link TransactionRolledbackException}</td>
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* </tr>
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* <tr>
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* <td>{@link INVALID_TRANSACTION}</td>
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* <td>{@link InvalidTransactionException}</td>
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* </tr>
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* <tr>
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* <td bgcolor="lightgray">Any other {@link SystemException}</td>
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* <td bgcolor="lightgray">{@link RemoteException}</td>
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* </tr>
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* </table>
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* </p>
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* <p>
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* The exception detailed message always consists of
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* <ol>
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* <li>the string "CORBA "</li>
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* <li>the CORBA name of the system exception</li>
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* <li>single space</li>
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* <li>the hexadecimal value of the system exception's minor code, preceeded
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* by 0x (higher bits contain {@link OMGVMCID}).</li>
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* <li>single space</li>
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* <li>the {@link CompletionStatus} of the exception: "Yes", "No" or "Maybe".</li>
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* </ol>
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* The subsequent content is not part of the official RMI-IIOP standart and is
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* added for compatibility with Sun's implementation:
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* <ol>
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* <li>the phrase "<code>; nested exception is: <i>(line feed)(tab)</i></code>"</li>
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* <li>the full name of the mapped SystemException, as returned by
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* Class.getName().</li>
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* <li>the ": ".
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* <li>the value, returned by .getMessage() of the passed parameter.</li>
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* </ol>
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* <p>
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* For instance, if the Internet connection was refused:
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* </p><p>
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* <code>CORBA COMM_FAILURE 0x535500C9 No</code>
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* </p><p>
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* The original CORBA exception is set as the cause of the RemoteException
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* being created.
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* </p>
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*/
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RemoteException mapSystemException(SystemException ex);
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/**
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* Get the Tie that handles invocations on the given target. The target/Tie
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* pair must be previously registered using {@link #registerTarget}.
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*
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* @return the Tie, or null if no such is known.
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*/
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Tie getTie(Remote target);
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/**
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* Register the Tie-target pair.
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*/
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void registerTarget(Tie tie, Remote target);
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/**
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* Deactivate the associated Tie, if it is found and is not connected to other
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* registered targets.
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*/
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void unexportObject(Remote target)
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throws NoSuchObjectException;
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/**
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* Converts the exception that was thrown by the implementation method on a
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* server side into RemoteException that can be transferred and re-thrown on a
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* client side. The method converts exceptions as defined in the following
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* table: <table border = "1">
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* <tr>
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* <th>Exception to map (or subclass)</th>
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* <th>Maps into</th>
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* </tr>
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* <tr>
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* <td>{@link Error}</td>
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* <td>{@link ServerError}</td>
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* </tr>
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* <tr>
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* <td>{@link RemoteException}</td>
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* <td>{@link ServerException}</td>
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* </tr>
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* <tr>
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* <td>{@link SystemException}</td>
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* <td>wrapException({@link #mapSystemException})</td>
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* </tr>
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* <tr>
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* <td>{@link RuntimeException}</td>
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* <td><b>rethrows</b></td>
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* </tr>
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* <tr>
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* <td>Any other exception</td>
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* <td>{@link UnexpectedException}</td>
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* </tr>
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* </table>
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*
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* @param ex an exception that was thrown on a server side implementation.
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*
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* @return the corresponding RemoteException unless it is a RuntimeException.
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*
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* @throws RuntimeException the passed exception if it is an instance of
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* RuntimeException.
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*
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* @specnote It is the same behavior, as in Suns implementations 1.4.0-1.5.0.
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*/
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RemoteException wrapException(Throwable orig);
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/**
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* Write the passed parameter to the output stream as CORBA object. If the
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* parameter is an instance of Remote and not an instance of Stub, the method
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* instantiates a suitable Tie, connects the parameter to this Tie and then
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* connects that Tie to the ORB that is requested from the output stream. Then
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* the object reference is written to the stream, making remote invocations
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* possible. This method is used in write_value(..) method group in
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* {@link org.omg.CORBA_2_3.portable.OutputStream} and also may be called
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* directly from generated Stubs and Ties.
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*
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* @param output a stream to write to, must be
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* org.omg.CORBA_2_3.portable.OutputStream
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* @param object an object to write.
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*/
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void writeRemoteObject(OutputStream output, Object obj);
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/**
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* Write abstract interface to the CORBA output stream. The write format is
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* matching CORBA abstract interface. Remotes and CORBA objects are written as
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* objects, other classes are supposed to be value types and are written as
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* such. {@link Remote}s are processed as defined in
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* {@link #writeRemoteObject}. The written data contains discriminator,
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* defining, that was written. Another method that writes the same content is
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* {@link org.omg.CORBA_2_3.portable.OutputStream#write_abstract_interface(java.lang.Object)}.
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*
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* @param output a stream to write to, must be
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* {@link org.omg.CORBA_2_3.portable.OutputStream}.
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*
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* @param object an object to write, must be CORBA object, Remote
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*/
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void writeAbstractObject(OutputStream output, Object object);
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/**
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* Write the passed java object to the output stream in the form of the CORBA
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* {@link Any}. This includes creating an writing the object {@link TypeCode}
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* first. Such Any can be later read by a non-RMI-IIOP CORBA implementation
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* and manipulated, for instance, by means, provided in
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* {@link org.omg.DynamicAny.DynAny}. Depending from the passed value, this
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* method writes CORBA object, value type or value box. For value types Null
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* is written with the abstract interface, its typecode having repository id
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* "IDL:omg.org/CORBA/AbstractBase:1.0" and the empty string name.
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*
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* @param output the object to write.
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* @param object the java object that must be written in the form of the CORBA
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* {@link Any}.
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*/
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void writeAny(OutputStream output, Object object);
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/**
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* Read Any from the input stream.
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*/
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Object readAny(InputStream input);
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} |