Re: [Jython-users] copy and deepcopy not copying Java class variables?

[Andy R. <bar...@gm...>]

Thanks very much to both of you for the help, but with the new copy.py I'm
getting an error:

raise Error('un-deep-copyable object of type %s' % type(x))
copy.Error: un-deep-copyable object of type <class 'testClass.testClass'>

testClass in this case is a very simple class containing only a single
integer. Any ideas why this might be happening? I can give my code if it
will help.

Thanks again,
Barbalute

On Mon, Mar 8, 2010 at 4:08 PM, Josh Juneau <jun...@gm...> wrote:

> Yes, there is an issue with the current version of copy.py that is being
> distributed with 2.5.1.  You can read more about the issue on the bug
> tracker at http://bugs.jython.org/issue1551...but it specifically
> addresses issues while making copies of Java objects using copy() and
> deepcopy().  I am going to be checking in the attached version of copy.py
> which has been corrected to address the issues related to the bug report.
>  There is also an effort taking place to convert the current version of
> copy.py into a Java implementation to help boost performance a bit.  Please
> stay tuned for that version sometime in the future.
>
> If you have a moment, please drop the attached version of copy.py into your
> jython Lib directory and give it a try.  Hopefully it will resolve your
> issues.  If it does not, please submit another bug or add onto issue 1551.
>
> Thanks
>
>
> Josh Juneau
> jun...@gm...
> http://jj-blogger.blogspot.com
> http://www.jythonpodcast.com
> Twitter ID:  javajuneau
>
>
>
> On Mon, Mar 8, 2010 at 1:49 PM, Barbalute <Bar...@gm...> wrote:
>
>>
>> As the name suggests, it seems that copy and deepcopy aren't copying the
>> variables in my Java class.
>>
>> I currently have a Python class extending an existing Java abstract class.
>> For various reasons, I've overwritten clone() in the Python class so that
>> when the Java class calls it, it returns a deepcopy() of itself.
>>
>> This seems to properly copy the methods from the class, but the variables
>> from the abstract Java class are lost in the copy, and I have no idea why.
>>
>> In the overwritten Python clone() method, I'm able to manually copy over
>> the
>> variables, doing for example:
>>
>> x = copy.deepcopy(self)
>> x.name = self.name
>> return x
>>
>> But this shouldn't be necessary and becomes increasingly unwieldy for
>> classes with lots of variables. If I don't do it, though, name is not set
>> in
>> x and will return null in Java. Am I doing something wrong, or is
>> something
>> broken with copy() and deepcopy()?
>>
>> Thanks for your time.
>> --
>> View this message in context:
>> http://old.nabble.com/copy-and-deepcopy-not-copying-Java-class-variables--tp27826254p27826254.html
>> Sent from the jython-users mailing list archive at Nabble.com.
>>
>>
>>
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>