[PEAK] Dispatch

[Alain Poirier]

Hi Phillip,

Using RuleDispatch with Zope 2.x, I've got the problem that the 
'isinstance()' rule doesn't accept a Zope extension class.

Do you think it could be possible to fix this problem ?

Thanks,

"""
  ...
  File "build/bdist.linux-i686/egg/dispatch/functions.py", line 690, in when
  File "build/bdist.linux-i686/egg/dispatch/functions.py", line 577, in 
_decorate
  File "<string>", line 10, in parseRule
  File "build/bdist.linux-i686/egg/dispatch/functions.py", line 440, in 
parseRule
  File "build/bdist.linux-i686/egg/dispatch/functions.py", line 326, in 
parse
  File "build/bdist.linux-i686/egg/dispatch/ast_builder.py", line 383, in 
parse_expr
  File "build/bdist.linux-i686/egg/dispatch/ast_builder.py", line 378, in 
build
  File "build/bdist.linux-i686/egg/dispatch/ast_builder.py", line 51, in 
com_binary
  File "build/bdist.linux-i686/egg/dispatch/predicates.py", line 611, in And
  File "build/bdist.linux-i686/egg/dispatch/ast_builder.py", line 378, in 
build
  File "build/bdist.linux-i686/egg/dispatch/ast_builder.py", line 178, in 
power
  File "build/bdist.linux-i686/egg/dispatch/ast_builder.py", line 284, in 
com_call_function
  File "build/bdist.linux-i686/egg/dispatch/predicates.py", line 547, in 
method
  File "<string>", line 5, in expressionSignature
  File "build/bdist.linux-i686/egg/dispatch/predicates.py", line 721, in 
convertIsInstanceToClassCriterion
  File "build/bdist.linux-i686/egg/protocols/interfaces.py", line 298, in 
__call__
  File "_speedups.pyx", line 198, in _speedups.Protocol__call__
  File "_speedups.pyx", line 183, in _speedups._adapt
AdaptationFailure: ("Can't adapt", <extension class 
pjsproduct_zb.pjsproduct.CPJSProduct at b5aeb7a0>, <class 
'dispatch.interfaces.ICriterion'>)
"""