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incomming changes for pyxser-1.4
by Daniel Molina Wegener on 22.12.2009pyxser, my Python-Object to XML serializer is suffering few changes, but important ones. The main change is the fact that I will add a type map optional parameter for deserialization functions. How should it work?
def create_string_from_string(mystr, myroot):
return str(mystr)
my_typemap = {'java.lang.String': create_string_from_string,
'String': create_string_from_string,
'string': create_string_from_string}
unserialized = pyxser.unserialize(obj = serialized, \
enc = "utf-8", \
typemap = my_typemap)
This will allow you to create the proper instance of non standard objects in Python. For example if there exists a third party class which needs a special instantation, like the ones which are using sockets or files, this will allow you to create the instance with a custom function, specially if the serialized object comes from other languages.
The type map callbacks will be called using my_typemap['maptype'](python_string, root_object), where python_string is the node content as Python String and root_object is the deserialized root object — the pointed by the root element. About the error occurrences, I will clear each error produced inside the type map function, by call PyErr_Clear(), then you must control those errors produced inside your callback, and return Py_None (None) on each one.
I will be writing this feature this week and the weekend, if you want a change over this feature, this is the time to get some feedback. I think that pyxser-1.4r will be launched on 2010-01-01.
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