IT. Expert System.

Java Standard Edition (SE)

LocalObject


org.omg.CORBA

Class 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

      Constructors 
      Constructor and Description
      LocalObject()
      Constructs a default LocalObject instance.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method and Description
      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.
    • 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
      • _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


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