Re: [Orbit-python-list] (in Object obj) marshalling error

[Christian R. R. <ki...@as...>]

On Tue, 23 Jan 2001, Jason Tackaberry wrote:

> > [...]
> > class Foo:
> >    pass
> > a=Foo()
> > nc.bind(a)
> > TypeError: Failed to marshal: Object Reference ()
> 
> Like I said earlier, ORBit-Python doesn't handle generic object
> references.  However, even if it did, this wouldn't work because Foo
> doesn't inherit a POA class.

You're right. My example was stupid. The problem I have is that ATM you
can't even pass a Corba Object as a parameter -- you get the exact same
error. As a simple example:

module Bar {
	interface Foo {
		void bind (in Object a);
	};
};

and the following servant:

#!/usr/bin/env python
import CORBA
import Bar,Bar__POA

class Foo(Bar__POA.Foo):
	def bind(self,i):
		print i

o=CORBA.ORB_init([],CORBA.ORB_ID)
p=o.resolve_initial_references("RootPOA")
f=Foo()
f._this()
ref = p.servant_to_reference(f)
print o.object_to_string(ref)
p._get_the_POAManager().activate()
o.run()

produce the same TypeError: Failed to marshal: Object Reference ()

when a client like this tries to call bind:

#!/usr/bin/env python
import sys,CORBA, Bar, Bar__POA

o=CORBA.ORB_init([],CORBA.ORB_ID)
f=o.string_to_object(sys.argv[1])

f.bind(f)

Okay, so I used f as a parameter to itself: it should work, no? And f _is_
a reference to a Corba object.

> I'm not entirely sure what happened here, but my guess is 'a' wasn't a
> valid IOR (such as, for example, if it has trailing newlines and you're
> not using the latest CVS version).

Actually, it was a valid IOR and ior-decode indicated it as such. I'm
using CVS orbit-python (and I check to see if it's been updated daily too
*grin*) But I can't seem to reproduct this right now.

> Well again, ORBit-Python won't handle the objref properly, but in this
> case you're not passing it a CORBA object.  It sounds to me like you're
> mixing up the Any type with the Object type. 

No, just trying (brokenly) to illustrate that I get the same error message
whether it's a Corba Object or a plain Python object. My example

class Foo:
	pass

should really have been

class Foo(Bar__POA.Foo)
	pass

but it still doesn't work, regardless :-)

> It's just missing a FIXME :)
> So, here the segfault happens inside object_to_string, not bind().

Ok, this is reasonable, I was just wondering. :-)

Take care,
--
/\/\ Christian Reis, Senior Engineer, Async Open Source, Brazil
~\/~ http://async.com.br/~kiko/ | [+55 16] 274 4311