[Twisted-Python] Simple components question - IFoo(IBar(obj)) wont' work, what am I doing wrong?
Michal Pasternak
michal at pasternak.w.lub.pl
Sun Jun 20 13:38:43 MDT 2004
Hi,
I've hit a problem with compy, but it seems it's the same for Twisted
Components. What am I doing wrong here? I bet I've overlooked something
really simple, but I'm unable to find out.
---------------------------------------------------------------------------
import twisted.python.components as compy
class IFoo(compy.Interface):
pass
class IBar(compy.Interface):
pass
class x: pass
class y(compy.Adapter):
__implements__ = (IFoo,)
pass
class z(compy.Adapter):
__implements__ = (IBar,)
pass
compy.registerAdapter(y, x, IFoo)
compy.registerAdapter(z, y, IBar)
IBar(IFoo(x()))
---------------------------------------------------------------------------
... this will fail with:
twisted.python.components.CannotAdapt: <__main__.y instance at 0x80fc0ac> cannot be adapted to <class '__main__.IBar'>.
--
m
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