[omniORB] type checking

[Ridgway, Richard (London)]

I use something like this decorator (borrowed from pyExcelerator. I
think I've seen similar but more convoluted example in zope?). Not quite
what you want, but maybe workable.

def returns(t):
  def check_returns(f):
    def new_f(*args,**kwds):
      val = f(*args,**kwds)
      assert isinstance(val,t)
      return val
    return new_f
  return check_returns

@returns(str)
def bob():
  return "string"

@returns(str)
def bob_not_str():
  return 1

>>> bob()
'string'

>>> bob_not_str()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 5, in new_f
AssertionError



-----Original Message-----
From: omniorb-list-bounces at omniorb-support.com
[mailto:omniorb-list-bounces at omniorb-support.com] On Behalf Of Michael
Brenner
Sent: 03 July 2008 17:39
To: omniorb-list at omniorb-support.com
Subject: [omniORB] type checking


Hi,

I'm calling a python server from a java client.  Is there a way I can
type check 
the return values in python, ie assert that they confirm to the out
parameters 
specified in the IDL, and die gracefully (and with a helful message) if
they 
don't?  Right now, I'm getting org.omg.CORBA.BAD_PARAM errors - which
don't give 
me any clue about what went wrong.

Cheers,

     michael

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