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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
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tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/javax/rmi/CORBA/Util.java
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+/* Util.java --
+ Copyright (C) 2002, 2004, 2005 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 javax.rmi.CORBA;
+
+import org.omg.CORBA.Any;
+import org.omg.CORBA.BAD_PARAM;
+import org.omg.CORBA.COMM_FAILURE;
+import org.omg.CORBA.CompletionStatus;
+import org.omg.CORBA.INVALID_TRANSACTION;
+import org.omg.CORBA.INV_OBJREF;
+import org.omg.CORBA.MARSHAL;
+import org.omg.CORBA.NO_PERMISSION;
+import org.omg.CORBA.OBJECT_NOT_EXIST;
+import org.omg.CORBA.OMGVMCID;
+import org.omg.CORBA.ORB;
+import org.omg.CORBA.SystemException;
+import org.omg.CORBA.TRANSACTION_REQUIRED;
+import org.omg.CORBA.TRANSACTION_ROLLEDBACK;
+import org.omg.CORBA.TypeCode;
+import org.omg.CORBA.portable.InputStream;
+import org.omg.CORBA.portable.OutputStream;
+
+import gnu.javax.rmi.CORBA.DelegateFactory;
+
+import java.rmi.AccessException;
+import java.rmi.MarshalException;
+import java.rmi.NoSuchObjectException;
+import java.rmi.Remote;
+import java.rmi.RemoteException;
+import java.rmi.ServerError;
+import java.rmi.ServerException;
+import java.rmi.UnexpectedException;
+import java.rmi.server.RMIClassLoader;
+
+import javax.transaction.InvalidTransactionException;
+import javax.transaction.TransactionRequiredException;
+import javax.transaction.TransactionRolledbackException;
+
+/**
+ * Provides utility methods used by stubs and ties to perform common operations.
+ * The functionality is forwarded to the enclosed UtilDelegate. This delegate
+ * can be altered by setting the system property "javax.rmi.CORBA.UtilClass" to
+ * the name of the alternative class that must implement {@link UtilDelegate}.
+ *
+ * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
+ */
+public class Util
+{
+ /**
+ * The delegate, responsible for all functionality.
+ */
+ static UtilDelegate delegate = (UtilDelegate) DelegateFactory.getInstance(DelegateFactory.UTIL);
+
+ /**
+ * Prevents this class from being instantiated.
+ */
+ private Util()
+ {
+ }
+
+ /**
+ * Used by local stubs to create a copy of the object. The object must be
+ * Serializable for this operation to succeed. Strings are not copied and
+ * 1D-3D string arrays are only cloned.
+ */
+ public static java.lang.Object copyObject(java.lang.Object object, ORB orb)
+ throws RemoteException
+ {
+ return delegate.copyObject(object, orb);
+ }
+
+ /**
+ * Used by local stubs to create a multiple copies of the object, preserving
+ * sharing accross the parameters if necessary.
+ */
+ public static java.lang.Object[] copyObjects(java.lang.Object[] object,
+ ORB orb)
+ throws RemoteException
+ {
+ return delegate.copyObjects(object, orb);
+ }
+
+ /**
+ * Get the value handler that Serializes Java objects to and from CDR (GIOP)
+ * streams.
+ *
+ * When using the default Util implementation, the class of the returned
+ * handler can be altered by setting by setting the system property
+ * "javax.rmi.CORBA.ValueHandlerClass" to the name of the alternative class
+ * that must implement {@link ValueHandler}.
+ */
+ public static ValueHandler createValueHandler()
+ {
+ return delegate.createValueHandler();
+ }
+
+ /**
+ * This call is finally delegated to {@link RMIClassLoader#getClassAnnotation};
+ */
+ public static String getCodebase(Class clz)
+ {
+ return delegate.getCodebase(clz);
+ }
+
+ /**
+ * Get the Tie that handles invocations on the given target. If the target/Tie
+ * pair has not been previously registered using {@link #registerTarget},
+ * this method tries to locate a tie class by the name pattern. If this
+ * succeeds, the tie-target pair is also registered.
+ *
+ * @return the Tie.
+ */
+ public static Tie getTie(Remote target)
+ {
+ return delegate.getTie(target);
+ }
+
+ /**
+ * Checks if the given stub is local. The implementation it delegates call to
+ * {@link ObjectImpl#_is_local().
+ *
+ * @param stub a stub to check.
+ * @return true if the stub is local, false otherwise.
+ *
+ * @throws RemoteException if the {@link ObjectImpl#_is_local()} throws a
+ * {@link org.omg.CORBA.SystemException}.
+ */
+ public static boolean isLocal(Stub stub)
+ throws RemoteException
+ {
+ return delegate.isLocal(stub);
+ }
+
+ /**
+ * Load the class. The method uses class loaders from the call stact first. If
+ * this fails, the further behaviour depends on the System Property
+ * "java.rmi.server.useCodebaseOnly" with default value "false".
+ *
+ * <ul>
+ * <li>If remoteCodebase is non-null and useCodebaseOnly is "false" then call
+ * java.rmi.server.RMIClassLoader.loadClass (remoteCodebase, className)</li>
+ * <li> If remoteCodebase is null or useCodebaseOnly is true then call
+ * java.rmi.server.RMIClassLoader.loadClass(className)</li>
+ * <li>If a class is still not successfully loaded and the loader != null
+ * then try Class.forName(className, false, loader). </li>
+ * </ul>
+ *
+ * @param className the name of the class.
+ * @param remoteCodebase the codebase.
+ * @param loader the class loader.
+ * @return the loaded class.
+ *
+ * @throws ClassNotFoundException of the class cannot be loaded.
+ */
+ public static Class loadClass(String className, String remoteCodebase,
+ ClassLoader loader)
+ throws ClassNotFoundException
+ {
+ return delegate.loadClass(className, remoteCodebase, loader);
+ }
+
+ /**
+ * Converts CORBA {@link SystemException} into RMI {@link RemoteException}.
+ * The exception is converted as defined in the following table:
+ * <p>
+ * <table border = "1">
+ * <tr>
+ * <th>CORBA Exception</th>
+ * <th>RMI Exception</th>
+ * </tr>
+ * <tr>
+ * <td>{@link COMM_FAILURE}</td>
+ * <td>{@link MarshalException}</td>
+ * </tr>
+ * <tr>
+ * <td>{@link INV_OBJREF}</td>
+ * <td>{@link NoSuchObjectException}</td>
+ * </tr>
+ * <tr>
+ * <td>{@link NO_PERMISSION}</td>
+ * <td>{@link AccessException}</td>
+ * </tr>
+ * <tr>
+ * <td>{@link MARSHAL}</td>
+ * <td>{@link MarshalException}</td>
+ * </tr>
+ * <tr>
+ * <td>{@link BAD_PARAM} (all other cases)</td>
+ * <td>{@link MarshalException}</td>
+ * </tr>
+ * <tr>
+ * <td>{@link OBJECT_NOT_EXIST}</td>
+ * <td>{@link NoSuchObjectException}</td>
+ * </tr>
+ * <tr>
+ * <td>{@link TRANSACTION_REQUIRED}</td>
+ * <td>{@link TransactionRequiredException}</td>
+ * </tr>
+ * <tr>
+ * <td>{@link TRANSACTION_ROLLEDBACK}</td>
+ * <td>{@link TransactionRolledbackException}</td>
+ * </tr>
+ * <tr>
+ * <td>{@link INVALID_TRANSACTION}</td>
+ * <td>{@link InvalidTransactionException}</td>
+ * </tr>
+ * <tr>
+ * <td bgcolor="lightgray">Any other {@link SystemException}</td>
+ * <td bgcolor="lightgray">{@link RemoteException}</td>
+ * </tr>
+ * </table>
+ * </p>
+ * <p>
+ * The exception detailed message always consists of
+ * <ol>
+ * <li>the string "CORBA "</li>
+ * <li>the CORBA name of the system exception</li>
+ * <li>single space</li>
+ * <li>the hexadecimal value of the system exception's minor code, preceeded
+ * by 0x (higher bits contain {@link OMGVMCID}).</li>
+ * <li>single space</li>
+ * <li>the {@link CompletionStatus} of the exception: "Yes", "No" or "Maybe".</li>
+ * </ol>
+ * The subsequent content is not part of the official RMI-IIOP standart and is
+ * added for compatibility with Sun's implementation:
+ * <ol>
+ * <li>the phrase "<code>; nested exception is: <i>(line feed)(tab)</i></code>"</li>
+ * <li>the full name of the mapped SystemException, as returned by
+ * Class.getName().</li>
+ * <li>the ": ".
+ * <li>the value, returned by .getMessage() of the passed parameter.</li>
+ * </ol>
+ * <p>
+ * For instance, if the Internet connection was refused:
+ * </p><p>
+ * <code>CORBA COMM_FAILURE 0x535500C9 No</code>
+ * </p><p>
+ * The original CORBA exception is set as the cause of the RemoteException
+ * being created.
+ * </p>
+ */
+ public static RemoteException mapSystemException(SystemException ex)
+ {
+ return delegate.mapSystemException(ex);
+ }
+
+ /**
+ * Register the Tie-target pair. As the Tie is a Servant, it can potentially
+ * be connected to several objects and hence may be registered with several
+ * targets.
+ */
+ public static void registerTarget(Tie tie, Remote target)
+ {
+ delegate.registerTarget(tie, target);
+ }
+
+ /**
+ * Deactivate the associated Tie, if it is found and is not connected to other
+ * registered targets. Independing from the POA policies, the transparent
+ * reactivation will not be possible.
+ */
+ public static void unexportObject(Remote target)
+ throws NoSuchObjectException
+ {
+ delegate.unexportObject(target);
+ }
+
+ /**
+ * Converts the exception that was thrown by the implementation method on a
+ * server side into RemoteException that can be transferred and re-thrown on a
+ * client side. The method converts exceptions as defined in the following
+ * table: <table border = "1">
+ * <tr>
+ * <th>Exception to map (or subclass)</th>
+ * <th>Maps into</th>
+ * </tr>
+ * <tr>
+ * <td>{@link Error}</td>
+ * <td>{@link ServerError}</td>
+ * </tr>
+ * <tr>
+ * <td>{@link RemoteException}</td>
+ * <td>{@link ServerException}</td>
+ * </tr>
+ * <tr>
+ * <td>{@link SystemException}</td>
+ * <td>wrapException({@link #mapSystemException})</td>
+ * </tr>
+ * <tr>
+ * <td>{@link RuntimeException}</td>
+ * <td><b>rethrows</b></td>
+ * </tr>
+ * <tr>
+ * <td>Any other exception</td>
+ * <td>{@link UnexpectedException}</td>
+ * </tr>
+ * </table>
+ *
+ * @param exception an exception that was thrown on a server side implementation.
+ *
+ * @return the corresponding RemoteException unless it is a RuntimeException.
+ *
+ * @throws RuntimeException the passed exception if it is an instance of
+ * RuntimeException.
+ *
+ * @specnote It is the same behavior, as in Suns implementations 1.4.0-1.5.0.
+ */
+ public static RemoteException wrapException(Throwable exception)
+ {
+ return delegate.wrapException(exception);
+ }
+
+ /**
+ * Write abstract interface to the CORBA output stream. The write format is
+ * matching CORBA abstract interface. Remotes and CORBA objects are written as
+ * objects, other classes are supposed to be value types and are written as
+ * such. {@link Remote}s are processed as defined in
+ * {@link #writeRemoteObject}. The written data contains discriminator,
+ * defining, that was written. Another method that writes the same content is
+ * {@link org.omg.CORBA_2_3.portable.OutputStream#write_abstract_interface(java.lang.Object)}.
+ *
+ * @param output a stream to write to, must be
+ * {@link org.omg.CORBA_2_3.portable.OutputStream}.
+ *
+ * @param object an object to write, must be CORBA object, Remote
+ */
+ public static void writeAbstractObject(OutputStream output,
+ java.lang.Object object)
+ {
+ delegate.writeAbstractObject(output, object);
+ }
+
+ /**
+ * Write the passed java object to the output stream in the form of the CORBA
+ * {@link Any}. This includes creating an writing the object {@link TypeCode}
+ * first. Such Any can be later read by a non-RMI-IIOP CORBA implementation
+ * and manipulated, for instance, by means, provided in
+ * {@link org.omg.DynamicAny.DynAny}. Depending from the passed value, this
+ * method writes CORBA object, value type or value box. For value types Null
+ * is written with the abstract interface, its typecode having repository id
+ * "IDL:omg.org/CORBA/AbstractBase:1.0" and the empty string name.
+ *
+ * @param output the object to write.
+ * @param object the java object that must be written in the form of the CORBA
+ * {@link Any}.
+ */
+ public static void writeAny(OutputStream output, java.lang.Object object)
+ {
+ delegate.writeAny(output, object);
+ }
+
+ /**
+ * Read Any from the input stream.
+ */
+ public static java.lang.Object readAny(InputStream input)
+ {
+ return delegate.readAny(input);
+ }
+
+ /**
+ * Write the passed parameter to the output stream as CORBA object. If the
+ * parameter is an instance of Remote and not an instance of Stub, the method
+ * instantiates a suitable Tie, connects the parameter to this Tie and then
+ * connects that Tie to the ORB that is requested from the output stream. Then
+ * the object reference is written to the stream, making remote invocations
+ * possible (the ORB is started and activated, if required). This method is
+ * used in write_value(..) method group in
+ * {@link org.omg.CORBA_2_3.portable.OutputStream} and also may be called
+ * directly from generated Stubs and Ties.
+ *
+ * @param output a stream to write to, must be
+ * org.omg.CORBA_2_3.portable.OutputStream
+ * @param object an object to write.
+ */
+ public static void writeRemoteObject(OutputStream output,
+ java.lang.Object object)
+ {
+ delegate.writeRemoteObject(output, object);
+ }
+}