javax.rmi.CORBA
Interface UtilDelegate
public
interface
UtilDelegate
A delegate, implementing the functionality, provided by the
Util.
The default delegate can be altered by setting the system property
"javax.rmi.CORBA.UtilClass" to the name of the alternative class that must
implement this interface.
Method Summary |
Object | copyObject(Object obj, ORB orb)
Used by local stubs to create a copy of the object. |
Object[] | copyObjects(Object[] obj, ORB orb)
Used by local stubs to create a multiple copies of the object, preserving
sharing accross the parameters if necessary. |
ValueHandler | createValueHandler()
Get the value handler that Serializes Java objects to and from CDR (GIOP)
streams. |
String | getCodebase(Class clz) |
Tie | getTie(Remote target)
Get the Tie that handles invocations on the given target. |
boolean | isLocal(Stub stub)
Checks if the given stub is local. |
Class | loadClass(String className, String remoteCodebase, ClassLoader loader) |
RemoteException | mapSystemException(SystemException ex)
Converts CORBA SystemException into RMI RemoteException.
|
Object | readAny(InputStream input)
Read Any from the input stream. |
void | registerTarget(Tie tie, Remote target)
Register the Tie-target pair. |
void | unexportObject(Remote target)
Deactivate the associated Tie, if it is found and is not connected to other
registered targets. |
RemoteException | wrapException(Throwable orig)
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. |
void | writeAbstractObject(OutputStream output, Object object)
Write abstract interface to the CORBA output stream. |
void | writeAny(OutputStream output, Object object)
Write the passed java object to the output stream in the form of the CORBA
Any. |
void | writeRemoteObject(OutputStream output, Object obj)
Write the passed parameter to the output stream as CORBA object. |
public Object copyObject(Object obj, ORB orb)
Used by local stubs to create a copy of the object.
public Object[] copyObjects(Object[] obj, ORB orb)
Used by local stubs to create a multiple copies of the object, preserving
sharing accross the parameters if necessary.
Get the value handler that Serializes Java objects to and from CDR (GIOP)
streams.
public String getCodebase(Class clz)
public
Tie getTie(Remote target)
Get the Tie that handles invocations on the given target. The target/Tie
pair must be previously registered using
UtilDelegate.
Returns: the Tie, or null if no such is known.
public boolean isLocal(
Stub stub)
Checks if the given stub is local.
public Class loadClass(String className, String remoteCodebase, ClassLoader loader)
public 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
- the string "CORBA "
- the CORBA name of the system exception
- single space
- the hexadecimal value of the system exception's minor code, preceeded
by 0x (higher bits contain OMGVMCID).
- single space
- 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:
- the phrase "
; nested exception is: (line feed)(tab)
"
- the full name of the mapped SystemException, as returned by
Class.getName().
- the ": ".
- 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 Object readAny(InputStream input)
Read Any from the input stream.
public void registerTarget(
Tie tie, Remote target)
Register the Tie-target pair.
public void unexportObject(Remote target)
Deactivate the associated Tie, if it is found and is not connected to other
registered targets.
public RemoteException wrapException(Throwable orig)
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(UtilDelegate) |
RuntimeException |
rethrows |
Any other exception |
UnexpectedException |
Parameters: e 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.
UNKNOWN: It is the same behavior, as in Suns implementations 1.4.0-1.5.0.
public 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
UtilDelegate. The written data contains discriminator,
defining, that was written. Another method that writes the same content is
org.omg.CORBA_2_3.portable.OutputStream#write_abstract_interface(java.lang.Object).
Parameters: output a stream to write to, must be
org.omg.CORBA_2_3.portable.OutputStream.
object an object to write, must be CORBA object, Remote
public 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
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.
Parameters: output the object to write. object the java object that must be written in the form of the CORBA
Any.
public void writeRemoteObject(OutputStream output, Object obj)
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. This method is used in write_value(..) method group in
org.omg.CORBA_2_3.portable.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 obj an object to write.