[omniORB] Destroying object implementions in a factory etc

[Andy Weber]

Hi,

I have the following IDL:

interface RecordData
{
        ...
};

interface InstrumentDataFactory
{
        RecordData createRecordData();  // get a RecordData object
        void destroyRecordData( in RecordData recData); // destroy it
};

The server implements both InstrumentDataFactory and RecordData. The
code for createRecordData() is

RecordData * InstrumentDataFactory_i::createRecordData()
{
        RecordData_i *myimpl = new RecordData_i();
        tRecordData *myobj = new tRecordData(myimpl);
        myobj->_obj_is_ready(CORBA::BOA::getBOA());
        RecordData_var myobjRef = myobj->_this();
        return myobjRef._retn();
}

where tRecordData is a typedef for _tie_RecordData<RecordData_i,1>.

After much head-scratching and experiment, I have managed to write
destroyRecordData, as follows:

void InstrumentDataFactory_i::destroyRecordData(RecordData_ptr  recData)
{
        RecordData_Helper::duplicate( recData);
        CORBA::BOA::getBOA()->dispose( recData);
}

This works, calling the implementation's destructor, etc, and there are
no memory leaks.  But is this the right/only way to do it?

Secondly, if the client dies/disappears (without calling
destroyRecordData), can the ORB notify the server implementation that
this has happened so that the implementation can clean itself up?  (When
I try this in my test app, I am currently left with a 'dangling'
object.)

I can see from the omniORB documentation that this issue has been
addressed from the client's point of view, but I can't find anything of
relevance to servers.

Andy Weber
-- 
Andy Weber
Arcontech Ltd                           Phone +44 (0) 20 7405 2111
31-35 Kirby Street                      Fax   +44 (0) 20 7831 6667
London EC1N 8TE                         E-mail andy@arcontech.com