[omniORB] omniORBpy 3.0 sample code and some questions

[Chris Knight]

All, after much reverse engineering and mailing list perusing, I was able to
get a (rather simplistic) omniORBpy client using the latest versions of
omniORB(py) to hit my nameserver and to connect to a CORBA ORB as well as
establishing a callback.  I'm curious if I'm doing everything "correctly and
efficiently" or if I have some steps that are superfluous or I'm using the
modules incorrectly.  (In particular, with POA_CosNaming and CosNaming.)

Needless to say, a full day's work (scanning the mailing list and
reverse-engineering omniORBpy) to generate such a simple example makes me
think that more (better?) Python examples need to be generated (by us, the
user community?)  What say you?  (In particular, I'm looking for some DII
examples.)

---The IDL---
module ChatApp
{
        interface ChatClientCallBack
        {
                attribute string id;
                void printmessage (in string message);
        };

        interface ChatServ
        {
                void register(in ChatClientCallBack ClientObj);
                void broadcastmessage(in ChatClientCallBack ClientObj, in
string message);
        };
};

---Here's the code---

import sys
import omniORB
import POA_ChatApp
import CosNaming

print 'What is your name?',
name = sys.stdin.readline()[:-1]
orb = omniORB.CORBA.ORB_init(sys.argv, omniORB.CORBA.ORB_ID)
poa = orb.resolve_initial_references('RootPOA')
poaManager = poa._get_the_POAManager()
poaManager.activate()

class Callback(POA_ChatApp.ChatClientCallBack):
        def __init__(self, name):
                self.name = name

        def _get_id(self, *args):
                return self.name

        def printmessage(self, message): print `message`

callback = Callback(name)
callbackobj = callback._this()

nsobj = orb.resolve_initial_references('NameService')
nc = CosNaming.NameComponent('ChatServ', ' ')
chatserv = nsobj.resolve([nc])
chatserv.register(callbackobj)
while 1:
        print 'Type something:',
        a = sys.stdin.readline()[:-1]
        chatserv.broadcastmessage(callbackobj, a)