Thanks everyone, I've raised a bug report at
http://bugzilla.gnome.org/show_bug.cgi?id=357944
Now, back to learning more about CORBA
Cheers,
Russell
Gustavo J. A. M. Carneiro wrote:
On Ter, 2006-09-26 at 10:03 +1000, Russell Strong wrote:
Hi,
I've been pulling my hair out the last couple of days trying to get a
simple python/ORBit example working.
The server code ( see below ) show the following error
Traceback (most recent call last):
File "server", line 14, in increment
self.count += 1
AttributeError: 'Counter' object has no attribute 'count'
Adding a line print dir(self) to increment shows there really is no
count. Huh???
The client ( see below ) shows:
Traceback (most recent call last):
File "client", line 13, in ?
counter.increment()
CORBA.UNKNOWN
HELP !!!
Client Code
----------------
#!/usr/bin/env python
import ORBit
ORBit.load_file ('Test.idl')
import CORBA, Test
orb = CORBA.ORB_init()
ior = open('/tmp/orbit-python.ior').readline()
counter = orb.string_to_object(ior)
for i in xrange(10001):
try:
counter.increment()
except Test.Counter, data:
print 'Overflow : ', data.count
Server Code
----------------
#!usr/bin/env python
import ORBit
ORBit.load_file('Test.idl')
import CORBA, Test, Test__POA
class Counter(Test__POA.Counter):
def __init__(self):
Test__POA.Counter.__init__(self)
self.count = 0
def increment(self):
self.count += 1
if self.count > 10000:
e = Test.TestInterface.Overflow()
e.count = self.count
raise Test.TestInterface.Overflow, e
orb = CORBA.ORB_init()
poa = orb.resolve_initial_references("RootPOA")
If you change this code:
ref = Counter()._this()
to this:
counter = Counter()
ref = counter._this()
Then it works (after you fix the rest of the code,
s/Test.TestInterface.Overflow/Test.Counter.Overflow/).
The reason is that this expression "Counter()._this()" creates a
Counter() servant, takes a CORBA object reference to it, but then the
servant's reference count drops to zero and the servant is deallocated
and deactivated. So the client ends up receiving a reference to a dead
object.
I'm not completely sure yet, but this looks like a PyORBit bug. Could
you open a bug report in bugzilla? Thanks.
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