[IronPython] deepcopy

Pablo Dalmazzo pablodalma93 at hotmail.com
Thu Jun 10 11:24:10 PDT 2010


Hi,
yes there is a DBNull value. Thanks.


From: dinov at microsoft.com
To: users at lists.ironpython.com
Date: Thu, 10 Jun 2010 15:56:50 +0000
Subject: Re: [IronPython] deepcopy













Is there a DBNull value somewhere in your object?  DBNull is a singleton and I’d guess we’d need to add some custom logic which says the way we deserialize
 it is by pulling the singleton from DBNull.Value.  You can probably use copy_reg.pickle to register something which will handle objects of type DBNull that just returns DBNull.Value.
 



From: users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com]
On Behalf Of Pablo Dalmazzo

Sent: Thursday, June 10, 2010 7:57 AM

To: IronPython Mailing list

Subject: [IronPython] deepcopy


 

Hi there,


 


Im getting this error in the copy module. I moved the copy module from the IronPython 2.6 installation to work with


IronPython 2.0 for some compatibility problem I had with IronPython 2.6 dll with another dll we use. 


 


The only difference I see between the cases which works and those which doesnt are, in the succesful case it is a custom class object "alone", and in the error case is the
 deepcopy of a custom class object which contains a list with other instances of that object.


Could that have anything to do with the problem? Is that a limitation of the copy module in Python or it should work?


 


error description: 


 

No se puede encontrar el método 'DBNull..ctor'.



Error de código fuente: 




Línea 322:        args = deepcopy(args, memo)
Línea 323:    
Línea 324:    y = callable(*args)
Línea 325:
Línea 326:    memo[id(x)] = y






Archivo de origen: /SistemaVentaBaseIP2/App_Script/copy.py     




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