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org.omg.CORBA
Class LocalObject

java.lang.Object
  org.omg.CORBA.LocalObject

All Implemented Interfaces:

Object

public class LocalObject
extends Object
implements Object

Used as a base class for implementation of a local IDL interface in the Java language mapping. It is a class which implements all the operations in the org.omg.CORBA.Object interface.

Local interfaces are implemented by using CORBA::LocalObject to provide implementations of Object pseudo operations and any other ORB-specific support mechanisms that are appropriate for such objects. Object implementation techniques are inherently language-mapping specific. Therefore, the LocalObject type is not defined in IDL, but is specified in each language mapping.

Methods that do not apply to local objects throw an org.omg.CORBA.NO_IMPLEMENT exception with the message, "This is a locally contrained object." Attempting to use a LocalObject to create a DII request results in NO_IMPLEMENT system exception. Attempting to marshal or stringify a LocalObject results in a MARSHAL system exception. Narrowing and widening references to LocalObjects must work as for regular object references.

LocalObject is to be used as the base class of locally constrained objects, such as those in the PortableServer module. The specification here is based on the CORBA Components Volume I - orbos/99-07-01

See Also:

CORBA package comments for unimplemented features

Constructor Summary

LocalObject()
Constructs a default LocalObject instance.

Method Summary

Request	_create_request(Context ctx, String operation, NVList arg_list, NamedValue result) Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
Request	_create_request(Context ctx, String operation, NVList arg_list, NamedValue result, ExceptionList exceptions, ContextList contexts) Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
Object	_duplicate() Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
DomainManager[]	_get_domain_managers() Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented.
Object	_get_interface_def() Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
Object	_get_interface() Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented.
Policy	_get_policy(int policy_type) Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented.
int	_hash(int maximum) Returns a hash value that is consistent for the lifetime of the object, using the given number as the maximum.
InputStream	_invoke(OutputStream output) Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
boolean	_is_a(String repository_id) Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented.
boolean	_is_equivalent(Object that) Determines whether the two object references are equivalent, so far as the ORB can easily determine.
boolean	_is_local() Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
boolean	_non_existent() Always returns false.
ORB	_orb() Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
void	_release() Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
void	_releaseReply(InputStream input) Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
Request	_request(String operation) Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
OutputStream	_request(String operation, boolean responseExpected) Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
void	_servant_postinvoke(ServantObject servant) Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
ServantObject	_servant_preinvoke(String operation, Class expectedType) Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.
Object	_set_policy_override(Policy[] policies, SetOverrideType set_add) Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented.
boolean	validate_connection() Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LocalObject

public LocalObject()

Constructs a default LocalObject instance.

Method Detail

_is_equivalent

public boolean _is_equivalent(Object that)

Determines whether the two object references are equivalent, so far as the ORB can easily determine. Two object references are equivalent if they are identical. Two distinct object references which in fact refer to the same object are also equivalent. However, ORBs are not required to attempt determination of whether two distinct object references refer to the same object, since such determination could be impractically expensive.

Default implementation of the org.omg.CORBA.Object method.

Specified by:

_is_equivalent in interface Object

Parameters:

that - the object reference with which to check for equivalence

Returns:

true if this object reference is known to be equivalent to the given object reference. Note that false indicates only that the two object references are distinct, not necessarily that they reference distinct objects.

_non_existent

public boolean _non_existent()

Always returns false. This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_non_existent in interface Object

Returns:

false

_hash

public int _hash(int maximum)

Returns a hash value that is consistent for the lifetime of the object, using the given number as the maximum. This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_hash in interface Object

Parameters:

maximum - an int identifying maximum value of the hashcode

Returns:

this instance's hashcode

_is_a

public boolean _is_a(String repository_id)

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented. This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_is_a in interface Object

Parameters:

repository_id - a String

Returns:

NO_IMPLEMENT because this is a locally constrained object and this method does not apply to local objects

Throws:

NO_IMPLEMENT - because this is a locally constrained object and this method does not apply to local objects

See Also:

CORBA package comments for unimplemented features

_duplicate

public Object _duplicate()

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_duplicate in interface Object

Returns:

a duplicate of this LocalObject instance.

Throws:

NO_IMPLEMENT

See Also:

CORBA package comments for unimplemented features

_release

public void _release()

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_release in interface Object

Throws:

NO_IMPLEMENT

See Also:

CORBA package comments for unimplemented features

_request

public Request _request(String operation)

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_request in interface Object

Parameters:

operation - a String giving the name of an operation to be performed by the request that is returned

Returns:

a Request object with the given operation

Throws:

NO_IMPLEMENT

See Also:

CORBA package comments for unimplemented features

_create_request

public Request _create_request(Context ctx,
                               String operation,
                               NVList arg_list,
                               NamedValue result)

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_create_request in interface Object

Parameters:

ctx - a Context object containing a list of properties

operation - the String representing the name of the method to be invoked

arg_list - an NVList containing the actual arguments to the method being invoked

result - a NamedValue object to serve as a container for the method's return value

Returns:

a new Request object initialized with the given arguments

Throws:

NO_IMPLEMENT

See Also:

CORBA package comments for unimplemented features

_create_request

public Request _create_request(Context ctx,
                               String operation,
                               NVList arg_list,
                               NamedValue result,
                               ExceptionList exceptions,
                               ContextList contexts)

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_create_request in interface Object

Parameters:

ctx - a Context object containing a list of properties

operation - the name of the method to be invoked

arg_list - an NVList containing the actual arguments to the method being invoked

result - a NamedValue object to serve as a container for the method's return value

exceptions - an ExceptionList object containing a list of possible exceptions the method can throw

contexts - a ContextList object containing a list of context strings that need to be resolved and sent with the Request instance

Returns:

the new Request object initialized with the given arguments

Throws:

NO_IMPLEMENT

See Also:

CORBA package comments for unimplemented features

_get_interface

public Object _get_interface()

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented. This method is the default implementation of the org.omg.CORBA.Object method.

Returns:

NO_IMPLEMENT because this is a locally constrained object and this method does not apply to local objects

Throws:

NO_IMPLEMENT - because this is a locally constrained object and this method does not apply to local objects

See Also:

CORBA package comments for unimplemented features

_get_interface_def

public Object _get_interface_def()

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_get_interface_def in interface Object

Returns:

the InterfaceDef object in the Interface Repository which provides type information about the object referred to by this object reference

Throws:

NO_IMPLEMENT

See Also:

CORBA package comments for unimplemented features

_orb

public ORB _orb()

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Returns:

the ORB instance that created the Delegate contained in this ObjectImpl

Throws:

NO_IMPLEMENT

See Also:

CORBA package comments for unimplemented features

_get_policy

public Policy _get_policy(int policy_type)

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented. This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_get_policy in interface Object

Parameters:

policy_type - an int

Returns:

NO_IMPLEMENT because this is a locally constrained object and this method does not apply to local objects

Throws:

NO_IMPLEMENT - because this is a locally constrained object and this method does not apply to local objects

See Also:

CORBA package comments for unimplemented features

_get_domain_managers

public DomainManager[] _get_domain_managers()

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented. This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_get_domain_managers in interface Object

Returns:

the list of immediately enclosing domain managers of this object. At least one domain manager is always returned in the list since by default each object is associated with at least one domain manager at creation.

Throws:

NO_IMPLEMENT

See Also:

CORBA package comments for unimplemented features

_set_policy_override

public Object _set_policy_override(Policy[] policies,
                                   SetOverrideType set_add)

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented. This method is the default implementation of the org.omg.CORBA.Object method.

Specified by:

_set_policy_override in interface Object

Parameters:

policies - an array

set_add - a flag

Returns:

NO_IMPLEMENT because this is a locally constrained object and this method does not apply to local objects

Throws:

NO_IMPLEMENT - because this is a locally constrained object and this method does not apply to local objects

See Also:

CORBA package comments for unimplemented features

_is_local

public boolean _is_local()

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Returns true for this LocalObject instance.

Returns:

true always

Throws:

NO_IMPLEMENT

See Also:

CORBA package comments for unimplemented features

_servant_preinvoke

public ServantObject _servant_preinvoke(String operation,
                                        Class expectedType)

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Parameters:

operation - a String indicating which operation to preinvoke

expectedType - the class of the type of operation mentioned above

Returns:

NO_IMPLEMENT because this is a locally constrained object and this method does not apply to local objects

Throws:

NO_IMPLEMENT - because this is a locally constrained object and this method does not apply to local object

See Also:

CORBA package comments for unimplemented features

_servant_postinvoke

public void _servant_postinvoke(ServantObject servant)

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Parameters:

servant - the servant object on which to post-invoke

Throws:

NO_IMPLEMENT

See Also:

CORBA package comments for unimplemented features

_request

public OutputStream _request(String operation,
                             boolean responseExpected)

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Called by a stub to obtain an OutputStream for marshaling arguments. The stub must supply the operation name, and indicate if a response is expected (i.e is this a oneway call).

Parameters:

operation - the name of the operation being requested

responseExpected - true if a response is expected, false if it is a one-way call

Returns:

NO_IMPLEMENT because this is a locally constrained object and this method does not apply to local objects

Throws:

NO_IMPLEMENT - because this is a locally constrained object and this method does not apply to local objects

See Also:

CORBA package comments for unimplemented features

_invoke

public InputStream _invoke(OutputStream output)
                    throws ApplicationException,
                           RemarshalException

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

Called to invoke an operation. The stub provides an OutputStream that was previously returned by a _request() call. _invoke returns an InputStream which contains the marshaled reply. If an exception occurs, _invoke may throw an ApplicationException object which contains an InputStream from which the user exception state may be unmarshaled.

Parameters:

output - the OutputStream to invoke

Returns:

NO_IMPLEMENT because this is a locally constrained object and this method does not apply to local objects

Throws:

ApplicationException - If an exception occurs, _invoke may throw an ApplicationException object which contains an InputStream from which the user exception state may be unmarshaled.

RemarshalException - If an exception occurs, _invoke may throw an ApplicationException object which contains an InputStream from which the user exception state may be unmarshaled.

NO_IMPLEMENT - because this is a locally constrained object and this method does not apply to local objects

See Also:

CORBA package comments for unimplemented features

_releaseReply

public void _releaseReply(InputStream input)

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method is the default implementation of the org.omg.CORBA.Object method.

May optionally be called by a stub to release a reply stream back to the ORB when the unmarshaling has completed. The stub passes the InputStream returned by _invoke() or ApplicationException.getInputStream(). A null value may also be passed to _releaseReply, in which case the method is a no-op.

Parameters:

input - the reply stream back to the ORB or null

Throws:

NO_IMPLEMENT

See Also:

CORBA package comments for unimplemented features

validate_connection

public boolean validate_connection()

Throws an org.omg.CORBA.NO_IMPLEMENT exception with the message "This is a locally constrained object." This method does not apply to local objects and is therefore not implemented. This method is the default implementation of the org.omg.CORBA.Object method.

Returns:

NO_IMPLEMENT because this is a locally constrained object and this method does not apply to local objects

Throws:

NO_IMPLEMENT - because this is a locally constrained object and this method does not apply to local objects

See Also:

CORBA package comments for unimplemented features