[Py4j-users] Using copy.deepcopy() with Java Objects

[Nicolò P. <nic...@us...>]

Hi,
I was experimenting with your library P4JS and I was wandering how to create a copy of a Java object in Python environment. So I tried with the Python copy module, starting from your "stack" example:

>>> stack = gateway.entry_point.getStack()
>>> stack
JavaObject id=o0
>>> import copy
>>> a = copy.deepcopy(stack)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/copy.py", line 173, in deepcopy
    y = copier(memo)
  File "/Library/Python/2.6/site-packages/py4j/java_gateway.py", line 343, in __call__
    args_command = ''.join([get_command_part(arg, self.pool) for arg in new_args])
  File "/Library/Python/2.6/site-packages/py4j/protocol.py", line 208, in get_command_part
    command_part = REFERENCE_TYPE + parameter._get_object_id()
AttributeError: 'dict' object has no attribute '_get_object_id'

Is there a way to success in coping objects?

Thank you.
Bye


Nicolò Perino
______
PhD Student @ USI - Faculty of Informatics
http://www.people.usi.ch/perinon/