![[Ericsson AB]](min_head.gif)
This module contains the stub/skeleton functions generated by IC.
Starting a Orber server can be done in three ways:
{sup_child, true}
the oe_create_link/2 function returns {ok, Pid, ObjRef} which
can be handled by the application supervisor/stdlib-1.7 or later.
{persistent, true}
and {regname, {global, term()}} Orber will remember the object reference until the
server terminates with reason normal or shutdown. Hence,
if the server is started as a transient supervisor child we do not
receive a 'OBJECT_NOT_EXIST' exception when it has crashed and is being restarted.
The Orber stub can be used to start a pseudo object, which will create a non-server implementation.
A pseudo object introduce some limitations:
oe_create_link/2 is equal to oe_create/2, i.e.,
no link can or will be created.
BIF:s self() and process_flag(trap_exit,true) behaves incorrectly.
IC option {{impl, "M::I"}, "other_impl"} has no effect. The call-back
functions must be implemented in a file called M_I_impl.erl
IC option from has no effect.
IC option
{this, "M::I"} was used.
State changes have no effect. The user can provide information via
the Env start parameter and the State returned from init/2 will be the State
passed in following invocations.
Timeout parameter set it have no effect.
oneway are blocking until the operation replies.
{pseudo, true} overrides all other start options.
init/2 (called via oe_create*/2) and
terminate/2 (called via corba:dispose/1) must be implemented.
By adopting the rules for pseudo objects described above we can use oe_create/2
to create server or pseudo objects, by excluding or including the
option {pseudo, true}, without changing the call-back module.
If you start a object without {regname, RegName} it can only be accessed through the returned object key.
Started with a {regname, RegName} the name is registered locally or globally.
 |
To avoid flooding Orber with old object references start erlang using the flag -orber objectkeys_gc_time Time, which will remove all object references related to servers being dead for Time seconds. To avoid extra overhead, i.e., performing garbage collect if no persistent objects are started, the objectkeys_gc_time default value is infinity. For more information, see the orber and corba documentation. |
Module_Interface:typeID() -> TypeId
Types:
TypeId = string(), e.g., "IDL:Module/Interface:1.0"
Returns the Type ID related to this stub/skeleton
Module_Interface:oe_create() -> ObjRef
Types:
ObjRef = #object reference
Start a Orber server.
Module_Interface:oe_create_link() -> ObjRef
Types:
ObjRef = #object reference
Start a linked Orber server.
Module_Interface:oe_create(Env) -> ObjRef
Types:
Env = term()
ObjRef = #object reference
Start a Orber server passing Env to init/1.
Module_Interface:oe_create_link(Env) -> ObjRef
Types:
Env = term()
ObjRef = #object reference
Start a linked Orber server passing Env to init/1.
Module_Interface:oe_create(Env, Options) -> ObjRef
Types:
Env = term()
ObjRef = #object reference
Options = [{sup_child, false} | {persistent, Bool} | {regname, RegName} |
{pseudo, Bool} | {local_typecheck, Bool} | {survive_exit, Bool} |
{create_options, [CreateOpts]}]
Bool = true | false
RegName = {global, term()} | {local, atom()}
CreateOpts = {debug, [Dbg]} | {timeout, Time}
Dbg = trace | log | statistics | {log_to_file, FileName}
Start a Orber server passing Env to init/1.
If the option {pseudo, true} is used, all other options are overridden.
As default, this option is set to false.
This function cannot be used for starting a server as supervisor child.
If started as persistent, the options [{persistent, true}, {regname, {global, term()}}] must be used and
Orber will only forget the object reference if it terminates with reason normal or shutdown.
The option {local_typecheck, boolean()}, which overrides the
Local Typechecking
environment flag, turns on or off typechecking. If activated,
parameters, replies and raised exceptions will be checked to ensure that
the data is correct, when invoking operations on CORBA Objects within
the same Orber domain. Due to the extra overhead, this option
MAY ONLY be used during testing and development.
{survive_exit, boolean()} overrides the
EXIT Tolerance
environment flag. If activated, the server will not terminate, even though
the call-back module returns EXIT.
Time specifies how long time, in milliseconds, the server is allowed to
spend initializing. For more information about the Dbg options,
see the sys module.
Module_Interface:oe_create_link(Env, Options) -> Return
Types:
Env = term()
Return = ObjRef | {ok, Pid, ObjRef}
ObjRef = #object reference
Options = [{sup_child, Bool} | {persistent, Bool} | {regname, RegName} | {pseudo, Bool} |
{local_typecheck, Bool} | {survive_exit, Bool} |
{create_options, [CreateOpts]}]
Bool = true | false
RegName = {global, term()} | {local, atom()}
CreateOpts = {debug, [Dbg]} | {timeout, Time}
Dbg = trace | log | statistics | {log_to_file, FileName}
Start a linked Orber server passing Env to init/1.
If the option {pseudo, true} is used, all other options are overridden and no link will be created.
As default, this option is set to false.
This function can be used for starting a server as persistent or supervisor child. At the moment
[{persistent, true}, {regname, {global, term()}}] must be used to start
a server as persistent, i.e., if a server died and is in the process of being restarted
a call to the server will not raise 'OBJECT_NOT_EXIST' exception.
Orber will only forget the object reference if it terminates with reason normal or shutdown,
hence, the server must be started as transient (for more information see the
supervisor documentation).
The options {local_typecheck, boolean()} and {survive_exit, boolean()}
behaves in the same way as for oe_create/2.
Time specifies how long time, in milliseconds, the server is allowed to
spend initializing. For more information about the Dbg options,
see the sys module.
Module_Interface:own_functions(ObjRef, Arg1, ..., ArgN) -> Reply
Module_Interface:own_functions(ObjRef, Options, Arg1, ..., ArgN) -> Reply
Types:
ObjRef = #object reference
Options = [Option] | Timeout
Option = {timeout, Timeout} | {context, [Context]}
Timeout = infinity | integer(milliseconds)
Context = #'IOP_ServiceContext'{context_id = CtxId, context_data = CtxData}
CtxId = ?ORBER_GENERIC_CTX_ID
CtxData = {interface, Interface} | {userspecific, term()}
Interface = string()
ArgX = specified in the IDL-code.
Reply = specified in the IDL-code.
The default value for the Timeout option is infinity.
IPv4 or IPv6 addresses are accepted as local Interface.
To gain access to #'IOP_ServiceContext'{} record and the
?ORBER_GENERIC_CTX_ID macro, you must add
-include_lib("orber/include/corba.hrl"). to your module.
The following functions should be exported from a CORBA
callback module. Note, a complete template of the call-back module can
be generated automatically by compiling the IDL-file with the IC option
{be,erl_template}. One should also add
the same compile options, for example this or from,
used when generating the stub/skeleton modules.
Module_Interface_impl:init(Env) -> CallReply
Types:
Env = term()
CallReply = {ok, State} | {ok, State, Timeout} | ignore | {stop, StopReason}
State = term()
Timeout = int() >= 0 | infinity
StopReason = term()
Whenever a new server is started, init/1 is the first function called in the specified call-back module.
Module_Interface_impl:terminate(Reason, State) -> ok
Types:
Reason = term()
State = term()
This call-back function is called whenever the server is about to terminate.
Module_Interface_impl:code_change(OldVsn, State, Extra) -> CallReply
Types:
OldVsn = undefined | term()
State = term()
Extra = term()
CallReply = {ok, NewState}
NewState = term()
Update the internal State.
Module_Interface_impl:handle_info(Info, State) -> CallReply
Types:
Info = term()
State = term()
CallReply = {noreply, State} | {noreply, State, Timeout} | {stop, StopReason, State}
Timeout = int() >= 0 | infinity
StopReason = normal | shutdown | term()
If the configuration parameter {{handle_info, "Module::Interface"}, true} is passed to IC and process_flag(trap_exit,true) is set in the init() call-back this function must be exported.
 |
To be able to handle the |
Module_Interface_impl:own_functions(State, Arg1, ..., ArgN) -> CallReply
Module_Interface_impl:own_functions(This, State, Arg1, ..., ArgN) -> CallReply
Module_Interface_impl:own_functions(This, From, State, Arg1, ..., ArgN) -> ExtCallReply
Module_Interface_impl:own_functions(From, State, Arg1, ..., ArgN) -> ExtCallReply
Types:
This = the servers #object reference
State = term()
ArgX = specified in the IDL-code.
CallReply = {reply, Reply, State} | {reply, Reply, State, Timeout} |
{stop, StopReason, Reply, State} | {stop, StopReason, State} |
corba:raise(Exception)
ExtCallReply = CallReply | corba:reply(From, Reply), {noreply, State} |
corba:reply(From, Reply), {noreply, State, Timeout}
Reply = specified in the IDL-code.
Timeout = int() >= 0 | infinity
StopReason = normal | shutdown | term()
All two-way functions must return one of the listed replies or raise any of the exceptions listed in the IDL code (i.e. raises(...)). If the IC compile options this and/or from are used, the implementation must accept the This and/or From parameters.
Module_Interface_impl:own_functions(State, Arg1, ..., ArgN) -> CastReply
Module_Interface_impl:own_functions(This, State, Arg1, ..., ArgN) -> CastReply
Types:
This = the servers #object reference
State = term()
CastReply = {noreply, State} | {noreply, State, Timeout} | {stop, StopReason, State}
ArgX = specified in the IDL-code.
Reply = specified in the IDL-code.
Timeout = int() >= 0 | infinity
StopReason = normal | shutdown | term()
All one-way functions must return one of the listed replies. If the IC compile option this is used, the implementation must accept the This parameter.