[Zope-dev] Re: Execution context

[Garito]

Thank you for your help
I would like to overrite some properties in my product with a know property
(Maestro)
For example I define an object:

ObjectA
    PropertyA
    PropertyB
    PropertyC
    Maestro -> this property has a transversal path to ObjectB

ObjectB
    PropertyD

Then I would like to call

ObjectA.PropertyD -> these code calls ObjectB.Property

With these code I would like to construct a soft link mechanism

I try to override the __bobo_traverse__ with these code:

def __bobo_traverse__(self, Request, Name):
        Maestro = getattr(self, '.Maestro', None)
        if Maestro is not None:
            obj = self.unrestrictedTraverse(Maestro.contenido)
            Acquirido = obj.__of__(self)
            return getattr(Acquirido, Name)
        return getattr(self, Name)

these override works fine but is not recursive in the Maestro structures

If I use these other override :

def __bobo_traverse__(self, Request, Name):
        """Propiedad"""
        Obj = self
        Maestro = getattr(Obj, '.Maestro', None)
        Paso = 1
        while Maestro is not None:
            Obj = self.restrictedTraverse(Maestro.contenido).__of__(self)
            Maestro = getattr(Obj, '.Maestro', None)
            Paso += 1
            if Paso == 15: break
        if hasattr(Obj, Name):
            return getattr(Obj, Name)
        return getattr(self, Name)

The recursive Maestro mechanism works fine but in the ZMI I obtain the
object in the Maestro structure. For me is an error because I can't see the
real content of the object

Do you understand my problem?

Thanks again!!!

PD: sorry for my english!

----- Original Message ----- 
From: "Tres Seaver" <tseaver at zope.com>
To: <zope-dev at zope.org>
Sent: Wednesday, March 03, 2004 3:33 AM
Subject: [Zope-dev] Re: Execution context


> Garito wrote:
> > Can I know the execution contexto of an object?
> >
> > I would like to know if the object is call by ZMI or DTML or Page
Templates etc
> >
> > is it posible?
>
> Perhaps;  I am not sure I can see why it would be *desirable*.  Given
> that Scripts, DTMLMethods, etc., try pretty hard to push themselves onto
> the execution stack just as though they were methods, you could probably
> introspect the result of calling 'sys._getframe(1)' to figure out what
> kind of thing called you.
>
>  From the Python Cookbook, #14.7:
>
>     >>> def whoami():
>     ...     """ Return the name of the calling function.
>     ...     """
>     ...     import sys
>     ...     return sys._getframe(1).f_code.co_name
>     ...
>     >>> def foobar():
>     ...     print whoami()
>     ...
>     >>> foobar()
>     foobar
>
>
> Tres.
> -- 
> ===============================================================
> Tres Seaver                                tseaver at zope.com
> Zope Corporation      "Zope Dealers"       http://www.zope.com
>
>
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