Class Util

public static Object copyObject(Object object,
                                ORB orb)
            throws RemoteException

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 Object[] copyObjects(Object[] object,
                                   ORB orb)
            throws RemoteException

Used by local stubs to create a multiple copies of the object, preserving sharing accross the parameters if necessary.

public static ValueHandler createValueHandler()

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 ValueHandler.

public static String getCodebase(Class<T> clz)

This call is finally delegated to RMIClassLoader.getClassAnnotation(Class);

public static Tie getTie(Remote target)

Get the Tie that handles invocations on the given target. If the target/Tie pair has not been previously registered using registerTarget(Tie,Remote), this method tries to locate a tie class by the name pattern. If this succeeds, the tie-target pair is also registered.

Returns:

the Tie.

public static boolean isLocal(Stub stub)
            throws RemoteException

Checks if the given stub is local. The implementation it delegates call to . @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 SystemException.

public static Class<T> loadClass(String className,
                              String remoteCodebase,
                              ClassLoader loader)
            throws ClassNotFoundException

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".

• If remoteCodebase is non-null and useCodebaseOnly is "false" then call java.rmi.server.RMIClassLoader.loadClass (remoteCodebase, className)
• If remoteCodebase is null or useCodebaseOnly is true then call java.rmi.server.RMIClassLoader.loadClass(className)
• If a class is still not successfully loaded and the loader != null then try Class.forName(className, false, loader).

Parameters:

className - the name of the class.

remoteCodebase - the codebase.

loader - the class loader.

Returns:

the loaded class.

Throws:

ClassNotFoundException - of the class cannot be loaded.

public static RemoteException mapSystemException(SystemException ex)

Converts CORBA SystemException into RMI RemoteException. The exception is converted as defined in the following table:

CORBA Exception	RMI Exception
COMM_FAILURE	MarshalException
INV_OBJREF	NoSuchObjectException
NO_PERMISSION	AccessException
MARSHAL	MarshalException
BAD_PARAM (all other cases)	MarshalException
OBJECT_NOT_EXIST	NoSuchObjectException
TRANSACTION_REQUIRED	TransactionRequiredException
TRANSACTION_ROLLEDBACK	TransactionRolledbackException
INVALID_TRANSACTION	InvalidTransactionException
Any other SystemException	RemoteException

The exception detailed message always consists of

1. the string "CORBA "
2. the CORBA name of the system exception
3. single space
4. the hexadecimal value of the system exception's minor code, preceeded by 0x (higher bits contain OMGVMCID).
5. single space
6. the CompletionStatus of the exception: "Yes", "No" or "Maybe".

The subsequent content is not part of the official RMI-IIOP standart and is added for compatibility with Sun's implementation:

1. the phrase "; nested exception is: (line feed)(tab)"
2. the full name of the mapped SystemException, as returned by Class.getName().
3. the ": ".
4. the value, returned by .getMessage() of the passed parameter.

For instance, if the Internet connection was refused:

CORBA COMM_FAILURE 0x535500C9 No

The original CORBA exception is set as the cause of the RemoteException being created.

public static Object readAny(InputStream input)

Read Any from the input stream.

public static void registerTarget(Tie tie,
                                  Remote target)

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 unexportObject(Remote target)
            throws NoSuchObjectException

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 RemoteException wrapException(Throwable exception)

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:

Exception to map (or subclass)	Maps into
Error	ServerError
RemoteException	ServerException
SystemException	wrapException(mapSystemException(SystemException))
RuntimeException	rethrows
Any other exception	UnexpectedException

Parameters:

exception - an exception that was thrown on a server side implementation.

Returns:

the corresponding RemoteException unless it is a RuntimeException.

Throws:

RuntimeException - the passed exception if it is an instance of RuntimeException.

public static void writeAbstractObject(OutputStream output,
                                       Object object)

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. Remotes are processed as defined in writeRemoteObject(OutputStream,Object). The written data contains discriminator, defining, that was written. Another method that writes the same content is OutputStream.write_abstract_interface(Object).

Parameters:

output - a stream to write to, must be OutputStream.

object - an object to write, must be CORBA object, Remote

public static void writeAny(OutputStream output,
                            Object object)

Write the passed java object to the output stream in the form of the CORBA Any. This includes creating an writing the object TypeCode first. Such Any can be later read by a non-RMI-IIOP CORBA implementation and manipulated, for instance, by means, provided in 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.

Parameters:

output - the object to write.

object - the java object that must be written in the form of the CORBA Any.

public static void writeRemoteObject(OutputStream output,
                                     Object object)

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 OutputStream and also may be called directly from generated Stubs and Ties.

Parameters:

output - a stream to write to, must be org.omg.CORBA_2_3.portable.OutputStream

object - an object to write.