CODEWITHSUNDEEP
pythonxml-rpccompositerecursive-datastructuresxmlrpclib
zekifh
zekifh

Reputation: 169

sending object (recursive data structures) by XML-RPC in python

I need to send an object through XML-RPC in python. My object consist of composite data type to populate a tree structure:

class Node(object):
'''Composite data type '''
def __init__(self, pData, pParent=None):
    self.mData = pData
    self.mParent = pParent
    self.mChildren = []

self.mParent is reference to its parent node. So I have a recursive data structures to create this structure. When I try to send this data type directly by XML-RPC, it gives this error:

xmlrpclib.Fault: <Fault 1: "<type 'exceptions.TypeError'>:cannot marshal recursive dictionaries">

I think this exception raised due to its complex structure. Because xml-rpc supports only basic data types. I couldn't use dictionaries, because I need to have the references in my client peer. When i use dictionaries with references, it gives the same error above. I couldn't use pickle, It needs to be language independent.

Do you have any suggestion to send an object through XML-RPC natively? Maybe how to create my own data type to send it in xml format?

Upvotes: 0

Views: 2550

Answers (1)

user2665694
user2665694

Reputation:

Look at

http://www.xs4all.nl/~irmen/pyro3/

when you want to transfer Python objects over the wire.

Since XMLRPC is based on XML -as the name implies - you can not transfer Python objects over the wire without serialization.

Upvotes: 1

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