1997 2007 Ericsson AB, All Rights Reserved The contents of this file are subject to the Erlang Public License, Version 1.1, (the "License"); you may not use this file except in compliance with the License. You should have received a copy of the Erlang Public License along with this software. If not, it can be retrieved online at http://www.erlang.org/. Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. The Initial Developer of the Original Code is Ericsson AB. corba_object 1997-11-10 A
corba_object The CORBA Object interface functions

This module contains the CORBA Object interface functions that can be called for all objects.

 get_interface(Object) -> InterfaceDef Fetch the interface description Object = #objref InterfaceDef = term()

This function returns the full interface description for an object.

 is_nil(Object) -> boolean() Return true, if the given object is a NIL object reference, otherwise false Object = #objref

This function checks if the object reference has a nil object value, which denotes no object. It is the reference that is tested and no object implementation is involved in the test.

is_a(Object, Logical_type_id) -> Return is_a(Object, Logical_type_id, Contexts) -> Return Return true if the target object is an, or inherit from, object of the given type Object = #objref Logical_type_id = string() Contexts = [Context] Context = #'IOP_ServiceContext'{context_id = CtxId, context_data = CtxData} CtxId = ?ORBER_GENERIC_CTX_ID CtxData = {interface, Interface} | {userspecific, term()} | {configuration, Options} Interface = string() Options = [{Key, Value}] Key = ssl_client_verify | ssl_client_depth | ssl_client_certfile | ssl_client_cacertfile | ssl_client_password | ssl_client_keyfile | ssl_client_ciphers | ssl_client_cachetimeout Value = allowed value associated with the given key Return = boolean() | {'EXCEPTION', E}

The Logical_type_id is a string that is a share type identifier (repository id). The function returns true if the object is an instance of that type or an ancestor of the "most derived" type of that object.

The configuration context is used to override the global SSL client side configuration.

Note: Other ORB suppliers may not support this function completely according to the OMG specification. Thus, a is_a call may raise an exception or respond unpredictable if the Object is located on a remote node.

 is_remote(Object) -> boolean() Determine whether or not an object reference is remote Object = #objref

This function returns true if an object reference is remote otherwise false.

non_existent(Object) -> Return non_existent(Object, Contexts) -> Return Return false if the target object do not exist, otherwise true Object = #objref Contexts = [Context] Context = #'IOP_ServiceContext'{context_id = CtxId, context_data = CtxData} CtxId = ?ORBER_GENERIC_CTX_ID CtxData = {interface, Interface} | {userspecific, term()} | {configuration, Options} Interface = string() Options = [{Key, Value}] Key = ssl_client_verify | ssl_client_depth | ssl_client_certfile | ssl_client_cacertfile | ssl_client_password | ssl_client_keyfile | ssl_client_ciphers | ssl_client_cachetimeout Value = allowed value associated with the given key Return = boolean() | {'EXCEPTION', E}

This function can be used to test if the object has been destroyed. It does this without invoking any application level code. The ORB returns true if it knows that the object is destroyed otherwise false.

The configuration context is used to override the global SSL client side configuration.

Note: The OMG have specified two different operators, _not_existent (CORBA version 2.0 and 2.2) and _non_existent (CORBA version 2.3), to be used for this function. It is not mandatory to support both versions. Thus, a non_existent call may raise an exception or respond unpredictable if the Object is located on a remote node. Depending on which version, ORB:s you intend to communicate with supports, you can either use this function or not_existent/1.

 not_existent(Object) -> Return not_existent(Object, Contexts) -> Return Return false if the target object do not exist, otherwise true Object = #objref Contexts = [Context] Context = #'IOP_ServiceContext'{context_id = CtxId, context_data = CtxData} CtxId = ?ORBER_GENERIC_CTX_ID CtxData = {interface, Interface} | {userspecific, term()} | {configuration, Options} Interface = string() Options = [{Key, Value}] Key = ssl_client_verify | ssl_client_depth | ssl_client_certfile | ssl_client_cacertfile | ssl_client_password | ssl_client_keyfile | ssl_client_ciphers | ssl_client_cachetimeout Value = allowed value associated with the given key Return = boolean() | {'EXCEPTION', E}

This function is implemented due to Interoperable purposes. Behaves as non_existent except the operator _not_existent is used when communicating with other ORB:s.

The configuration context is used to override the global SSL client side configuration.

 is_equivalent(Object, OtherObject) -> boolean() Return true if the target object and the supplied object easily can be determined to be equal, otherwise false Object = #objref OtherObject = #objref

This function is used to determine if two object references are equivalent so far the ORB easily can determine. It returns true if the target object reference is equal to the other object reference and false otherwise.

 hash(Object, Maximum) -> int() Return a hash value based on the target object Object = #objref Maximum = int()

This function returns a hash value based on the object reference that not will change during the lifetime of the object. The Maximum parameter denotes the upper bound of the value.