02b800ce7c
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@36607 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1069 lines
47 KiB
Python
1069 lines
47 KiB
Python
#----------------------------------------------------------------------------
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# Name: xmlmarshaller.py
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# Purpose:
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#
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# Authors: John Spurling, Joel Hare, Alan Mullendore
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#
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# Created: 7/28/04
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# CVS-ID: $Id$
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# Copyright: (c) 2004-2005 ActiveGrid, Inc.
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# License: wxWindows License
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#----------------------------------------------------------------------------
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import sys
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from types import *
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from activegrid.util.lang import *
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import logging
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ifDefPy()
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import xml.sax
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import xml.sax.handler
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endIfDef()
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import xml.sax.saxutils as saxutils
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import activegrid.util.objutils as objutils
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import activegrid.util.aglogging as aglogging
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MODULE_PATH = "__main__"
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## ToDO remove maxOccurs "unbounded" resolves to -1 hacks after bug 177 is fixed
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"""
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Special attributes that we recognize:
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name: __xmlname__
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type: string
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description: the name of the xml element for the marshalled object
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name: __xmlattributes__
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type: tuple or list
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description: the name(s) of the Lang string attribute(s) to be
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marshalled as xml attributes instead of nested xml elements. currently
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these can only be strings since there"s not a way to get the type
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information back when unmarshalling.
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name: __xmlexclude__
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type: tuple or list
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description: the name(s) of the lang attribute(s) to skip when
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marshalling.
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name: __xmlrename__
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type: dict
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description: describes an alternate Lang <-> XML name mapping.
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Normally the name mapping is the identity function. __xmlrename__
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overrides that. The keys are the Lang names, the values are their
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associated XML names.
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name: __xmlflattensequence__
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type: dict, tuple, or list
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description: the name(s) of the Lang sequence attribute(s) whose
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items are to be marshalled as a series of xml elements (with an
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optional keyword argument that specifies the element name to use) as
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opposed to containing them in a separate sequence element, e.g.:
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myseq = (1, 2)
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<!-- normal way of marshalling -->
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<myseq>
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<item objtype="int">1</item>
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<item objtype="int">2</item>
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</myseq>
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<!-- with __xmlflattensequence__ set to {"myseq": "squish"} -->
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<squish objtype="int">1</squish>
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<squish objtype="int">2</squish>
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name: __xmlnamespaces__
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type: dict
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description: a dict of the namespaces that the object uses. Each item
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in the dict should consist of a prefix,url combination where the key is
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the prefix and url is the value, e.g.:
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__xmlnamespaces__ = { "xsd":"http://www.w3c.org/foo.xsd" }
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name: __xmldefaultnamespace__
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type: String
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description: the prefix of a namespace defined in __xmlnamespaces__ that
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should be used as the default namespace for the object.
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name: __xmlattrnamespaces__
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type: dict
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description: a dict assigning the Lang object"s attributes to the namespaces
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defined in __xmlnamespaces__. Each item in the dict should consist of a
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prefix,attributeList combination where the key is the prefix and the value is
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a list of the Lang attribute names. e.g.:
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__xmlattrnamespaces__ = { "ag":["firstName", "lastName", "addressLine1", "city"] }
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name: __xmlattrgroups__
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type: dict
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description: a dict specifying groups of attributes to be wrapped in an enclosing tag.
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The key is the name of the enclosing tag; the value is a list of attributes to include
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within it. e.g.
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__xmlattrgroups__ = {"name": ["firstName", "lastName"], "address": ["addressLine1", "city", "state", "zip"]}
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name: __xmlcdatacontent__
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type: string
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description: value is the name of a string attribute that should be assigned CDATA content from the
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source document and that should be marshalled as CDATA.
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__xmlcdatacontent__ = "messyContent"
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"""
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global xmlMarshallerLogger
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xmlMarshallerLogger = logging.getLogger("activegrid.util.xmlmarshaller.marshal")
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xmlMarshallerLogger.setLevel(aglogging.LEVEL_WARN)
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# INFO : low-level info
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# DEBUG : debugging info
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################################################################################
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#
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# module exceptions
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#
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################################################################################
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class Error(Exception):
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"""Base class for errors in this module."""
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pass
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class UnhandledTypeException(Error):
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"""Exception raised when attempting to marshal an unsupported
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type.
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"""
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def __init__(self, typename):
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self.typename = typename
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def __str__(self):
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return "%s is not supported for marshalling." % str(self.typename)
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class XMLAttributeIsNotStringType(Error):
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"""Exception raised when an object"s attribute is specified to be
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marshalled as an XML attribute of the enclosing object instead of
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a nested element.
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"""
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def __init__(self, attrname, typename):
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self.attrname = attrname
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self.typename = typename
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def __str__(self):
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return """%s was set to be marshalled as an XML attribute
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instead of a nested element, but the object"s type is %s, not
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string.""" % (self.attrname, self.typename)
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class MarshallerException(Exception):
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pass
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class UnmarshallerException(Exception):
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pass
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################################################################################
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#
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# constants and such
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#
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################################################################################
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XMLNS = "xmlns"
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XMLNS_PREFIX = XMLNS + ":"
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XMLNS_PREFIX_LENGTH = len(XMLNS_PREFIX)
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DEFAULT_NAMESPACE_KEY = "__DEFAULTNS__"
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TYPE_QNAME = "QName"
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XMLSCHEMA_XSD_URL = "http://www.w3.org/2001/XMLSchema"
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AG_URL = "http://www.activegrid.com/ag.xsd"
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BASETYPE_ELEMENT_NAME = "item"
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DICT_ITEM_NAME = "qqDictItem"
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DICT_ITEM_KEY_NAME = "key"
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DICT_ITEM_VALUE_NAME = "value"
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# This list doesn"t seem to be used.
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# Internal documentation or useless? You make the call!
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##MEMBERS_TO_SKIP = ("__module__", "__doc__", "__xmlname__", "__xmlattributes__",
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## "__xmlexclude__", "__xmlflattensequence__", "__xmlnamespaces__",
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## "__xmldefaultnamespace__", "__xmlattrnamespaces__",
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## "__xmlattrgroups__")
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################################################################################
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#
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# classes and functions
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#
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################################################################################
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def setattrignorecase(object, name, value):
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if (name not in object.__dict__):
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namelow = name.lower()
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for attr in object.__dict__:
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if attr.lower() == namelow:
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object.__dict__[attr] = value
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return
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object.__dict__[name] = value
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def getComplexType(obj):
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if (hasattr(obj, "__xsdcomplextype__")):
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return obj.__xsdcomplextype__
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return None
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def _objectfactory(objname, objargs=None, objclass=None):
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"dynamically create an object based on the objname and return it."
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## print "[objectfactory] objname [%s]" % (objname)
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if not isinstance(objargs, list):
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objargs = [objargs]
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if (objclass != None):
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if (len(objargs) > 0):
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if (hasattr(objclass, "__xmlcdatacontent__")):
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obj = objclass()
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contentAttr = obj.__xmlcdatacontent__
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obj.__dict__[contentAttr] = str(objargs[0])
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return obj
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return objclass(*objargs)
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else:
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return objclass()
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return objutils.newInstance(objname, objargs)
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class Element:
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def __init__(self, name, attrs=None, xsname=None):
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self.name = name
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self.attrs = attrs
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self.content = ""
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self.children = []
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self.objclass = None
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self.xsname = xsname
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def getobjtype(self):
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objtype = self.attrs.get("objtype")
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if (objtype == None):
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if (len(self.children) > 0):
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objtype = "dict"
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else:
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objtype = "str"
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return objtype
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class NsElement(object):
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def __init__(self):
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self.nsMap = {}
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self.targetNS = None
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self.defaultNS = None
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self.prefix = None
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def isEmpty(self):
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return ((self.nsMap == {}) and (self.targetNS == None) and (self.defaultNS == None))
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def setKnownTypes(self, masterKnownTypes, masterKnownNamespaces, parentNSE):
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# if we're a nested element, extend our parent element's mapping
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if parentNSE != None:
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self.knownTypes = parentNSE.knownTypes.copy()
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# but if we have a different default namespace, replace the parent's default mappings
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if parentNSE.defaultNS != self.defaultNS:
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newKT = self.knownTypes.copy()
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for tag in newKT:
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if tag.find(':') < 0:
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del self.knownTypes[tag]
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newMap = parentNSE.nsMap.copy()
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if self.nsMap != {}:
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for k, v in self.nsMap.iteritems():
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newMap[k] = v
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self.nsMap = newMap
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else:
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self.knownTypes = {}
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reversedKNS = {}
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# TODO: instead of starting with the knownNamespaces, start with the "xmlms" mappings
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# for this element. Then we'd only process the namespaces and tags we need to.
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# But for now, this works.
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for long, short in masterKnownNamespaces.iteritems():
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reversedKNS[short] = long
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mapLongs = self.nsMap.values()
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for tag, mapClass in masterKnownTypes.iteritems():
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i = tag.rfind(':')
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if i >= 0: # e.g. "wsdl:description"
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knownTagShort = tag[:i] # "wsdl"
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knownTagName = tag[i+1:] # "description"
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knownTagLong = reversedKNS[knownTagShort] # e.g. "http://schemas.xmlsoap.org/wsdl"
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if (knownTagLong in mapLongs):
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for mShort, mLong in self.nsMap.iteritems():
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if mLong == knownTagLong:
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actualShort = mShort # e.g. "ws"
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actualTag = '%s:%s' % (actualShort, knownTagName)
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self.knownTypes[actualTag] = mapClass
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break
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if self.defaultNS == knownTagLong:
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self.knownTypes[knownTagName] = mapClass
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else: # e.g. "ItemSearchRequest"
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self.knownTypes[tag] = mapClass
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## print 'mapping <%s> to class "%s"' % (tag, mapClass.__name__)
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def expandQName(self, eName, attrName, attrValue):
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bigValue = attrValue
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i = attrValue.rfind(':')
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if (i < 0):
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if self.defaultNS != None:
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bigValue = '%s:%s' % (self.defaultNS, attrValue)
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else:
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attrNS = attrValue[:i]
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attrNCName = attrValue[i+1:]
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for shortNs, longNs in self.nsMap.iteritems():
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if shortNs == attrNS:
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bigValue = '%s:%s' % (longNs, attrNCName)
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break
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## print '[expandQName] input attrName = "%s" and attrValue "%s"; output = "%s"' % (attrName, attrValue, bigValue)
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return bigValue
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class XMLObjectFactory(xml.sax.ContentHandler):
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def __init__(self, knownTypes=None, knownNamespaces=None):
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self.rootelement = None
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if (knownTypes == None):
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self.knownTypes = {}
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else:
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self.knownTypes = knownTypes
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if (knownNamespaces == None):
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self.knownNamespaces = {}
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else:
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self.knownNamespaces = knownNamespaces
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self.skipper = False
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self.elementstack = []
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self.nsstack = []
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self.collectContent = None
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xml.sax.handler.ContentHandler.__init__(self)
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def appendElementStack(self, newElement, newNS):
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self.elementstack.append(newElement)
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if (newNS.isEmpty()):
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if (len(self.nsstack) > 0):
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newNS = self.nsstack[-1]
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else:
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newNS.knownTypes = self.knownTypes.copy()
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else:
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if (len(self.nsstack) > 0):
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newNS.setKnownTypes(self.knownTypes, self.knownNamespaces, self.nsstack[-1])
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else:
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newNS.setKnownTypes(self.knownTypes, self.knownNamespaces, None)
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self.nsstack.append(newNS)
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return newNS
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def popElementStack(self):
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element = self.elementstack.pop()
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nse = self.nsstack.pop()
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return element, nse
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## ContentHandler methods
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def startElement(self, name, attrs):
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## print '[startElement] <%s>' % (name)
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if name == 'xs:annotation' or name == 'xsd:annotation': # should use namespace mapping here
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self.skipper = True
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self.appendElementStack(Element(name, attrs.copy()), NsElement())
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if self.skipper:
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return
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if self.collectContent != None:
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strVal = '<%s' % (name)
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for aKey, aVal in attrs.items():
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strVal += (' %s="%s"' % (aKey, aVal))
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strVal += '>'
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self.collectContent.content += strVal
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xsname = name
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if name.find(':') > -1: # Strip namespace prefixes for now until actually looking them up in xsd
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name = name[name.rfind(":") + 1:]
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element = Element(name, attrs.copy(), xsname=xsname)
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# if the element has namespace attributes, process them and add them to our stack
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nse = NsElement()
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for k in attrs.getNames():
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if k.startswith('xmlns'):
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longNs = attrs[k]
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eLongNs = longNs + '/'
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if str(eLongNs) in asDict(self.knownNamespaces):
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longNs = eLongNs
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if k == 'xmlns':
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nse.defaultNS = longNs
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else:
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shortNs = k[6:]
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nse.nsMap[shortNs] = longNs
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elif k == 'targetNamespace':
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nse.targetNS = attrs.getValue(k)
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nse = self.appendElementStack(element, nse)
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element.objclass = nse.knownTypes.get(xsname)
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if (hasattr(element.objclass, "__xmlcontent__")):
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self.collectContent = element
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def characters(self, content):
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## print '[characters] "%s" (%s)' % (content, type(content))
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if (content != None):
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if self.collectContent != None:
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self.collectContent.content += content
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else:
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self.elementstack[-1].content += content
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def endElement(self, name):
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## print "[endElement] </%s>" % name
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xsname = name
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if name.find(":") > -1: # Strip namespace prefixes for now until actually looking them up in xsd
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name = name[name.find(":") + 1:]
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if self.skipper:
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if xsname == "xs:annotation" or xsname == "xsd:annotation": # here too
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self.skipper = False
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self.popElementStack()
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return
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if self.collectContent != None:
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if xsname != self.collectContent.xsname:
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self.collectContent.content += ('</%s>' % (xsname))
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self.popElementStack()
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return
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else:
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self.collectContent = None
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oldChildren = self.elementstack[-1].children
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element, nse = self.popElementStack()
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if ((len(self.elementstack) > 1) and (self.elementstack[-1].getobjtype() == "None")):
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parentElement = self.elementstack[-2]
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## print "[endElement] %s: found parent with objtype==None: using its grandparent" % name
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elif (len(self.elementstack) > 0):
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parentElement = self.elementstack[-1]
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objtype = element.getobjtype()
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## print "element objtype is: ", objtype
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if (objtype == "None"):
|
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## print "[endElement] %s: skipping a (objtype==None) end tag" % name
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return
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constructorarglist = []
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if (len(element.content) > 0):
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strippedElementContent = element.content.strip()
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if (len(strippedElementContent) > 0):
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constructorarglist.append(element.content)
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obj = _objectfactory(objtype, constructorarglist, element.objclass)
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complexType = getComplexType(obj)
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if (obj != None):
|
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if (hasattr(obj, "__xmlname__") and getattr(obj, "__xmlname__") == "sequence"):
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self.elementstack[-1].children = oldChildren
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return
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if (len(element.attrs) > 0) and not isinstance(obj, list):
|
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## print "[endElement] %s: element has attrs and the obj is not a list" % name
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for attrname, attr in element.attrs.items():
|
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if attrname == XMLNS or attrname.startswith(XMLNS_PREFIX):
|
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if attrname.startswith(XMLNS_PREFIX):
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ns = attrname[XMLNS_PREFIX_LENGTH:]
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else:
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ns = ""
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if complexType != None:
|
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if not hasattr(obj, "__xmlnamespaces__"):
|
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obj.__xmlnamespaces__ = {ns:attr}
|
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elif ns not in obj.__xmlnamespaces__:
|
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if (hasattr(obj.__class__, "__xmlnamespaces__")
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and (obj.__xmlnamespaces__ is obj.__class__.__xmlnamespaces__)):
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obj.__xmlnamespaces__ = dict(obj.__xmlnamespaces__)
|
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obj.__xmlnamespaces__[ns] = attr
|
|
elif not attrname == "objtype":
|
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if attrname.find(":") > -1: # Strip namespace prefixes for now until actually looking them up in xsd
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attrname = attrname[attrname.find(":") + 1:]
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if (complexType != None):
|
|
xsdElement = complexType.findElement(attrname)
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|
if (xsdElement != None):
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type = xsdElement.type
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## print 'Unmarshalling element "%s", attribute "%s" with type "%s"' % (name, xsdElement.name, type)
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if (type != None):
|
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if (type == TYPE_QNAME):
|
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attr = nse.expandQName(name, attrname, attr)
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type = xsdToLangType(type)
|
|
### ToDO remove maxOccurs hack after bug 177 is fixed
|
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if attrname == "maxOccurs" and attr == "unbounded":
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attr = "-1"
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attr = _objectfactory(type, attr)
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try:
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setattrignorecase(obj, _toAttrName(obj, attrname), attr)
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except AttributeError:
|
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errorString = 'Error unmarshalling XML document at line %i, column %i: The object type of attribute "%s" of XML element "%s": not specified or known' % (self._locator.getLineNumber(), self._locator.getColumnNumber(), attrname, name)
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raise UnmarshallerException(errorString)
|
|
## obj.__dict__[_toAttrName(obj, attrname)] = attr
|
|
# stuff any child attributes meant to be in a sequence via the __xmlflattensequence__
|
|
flattenDict = {}
|
|
if hasattr(obj, "__xmlflattensequence__"):
|
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flatten = obj.__xmlflattensequence__
|
|
if (isinstance(flatten, dict)):
|
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for sequencename, xmlnametuple in flatten.items():
|
|
if (xmlnametuple == None):
|
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flattenDict[sequencename] = sequencename
|
|
elif (not isinstance(xmlnametuple, (tuple, list))):
|
|
flattenDict[str(xmlnametuple)] = sequencename
|
|
else:
|
|
for xmlname in xmlnametuple:
|
|
## print "[endElement]: adding flattenDict[%s] = %s" % (xmlname, sequencename)
|
|
flattenDict[xmlname] = sequencename
|
|
else:
|
|
raise Exception("Invalid type for __xmlflattensequence___ : it must be a dict")
|
|
|
|
# reattach an object"s attributes to it
|
|
for childname, child in element.children:
|
|
## print "[endElement] childname is: ", childname, "; child is: ", child
|
|
if (childname in flattenDict):
|
|
sequencename = _toAttrName(obj, flattenDict[childname])
|
|
if (not hasattr(obj, sequencename)):
|
|
obj.__dict__[sequencename] = []
|
|
sequencevalue = getattr(obj, sequencename)
|
|
if (sequencevalue == None):
|
|
obj.__dict__[sequencename] = []
|
|
sequencevalue = getattr(obj, sequencename)
|
|
sequencevalue.append(child)
|
|
elif (objtype == "list"):
|
|
obj.append(child)
|
|
elif isinstance(obj, dict):
|
|
if (childname == DICT_ITEM_NAME):
|
|
obj[child[DICT_ITEM_KEY_NAME]] = child[DICT_ITEM_VALUE_NAME]
|
|
else:
|
|
obj[childname] = child
|
|
else:
|
|
## print "childname = %s, obj = %s, child = %s" % (childname, repr(obj), repr(child))
|
|
try:
|
|
setattrignorecase(obj, _toAttrName(obj, childname), child)
|
|
except AttributeError:
|
|
raise MarshallerException("Error unmarshalling child element \"%s\" of XML element \"%s\": object type not specified or known" % (childname, name))
|
|
## obj.__dict__[_toAttrName(obj, childname)] = child
|
|
|
|
if (complexType != None):
|
|
for element in complexType.elements:
|
|
if element.default:
|
|
elementName = _toAttrName(obj, element.name)
|
|
if ((elementName not in obj.__dict__) or (obj.__dict__[elementName] == None)):
|
|
langType = xsdToLangType(element.type)
|
|
defaultValue = _objectfactory(langType, element.default)
|
|
obj.__dict__[elementName] = defaultValue
|
|
|
|
ifDefPy()
|
|
if (isinstance(obj, list)):
|
|
if ((element.attrs.has_key("mutable")) and (element.attrs.getValue("mutable") == "false")):
|
|
obj = tuple(obj)
|
|
endIfDef()
|
|
|
|
if (len(self.elementstack) > 0):
|
|
## print "[endElement] appending child with name: ", name, "; objtype: ", objtype
|
|
parentElement.children.append((name, obj))
|
|
## print "parentElement now has ", len(parentElement.children), " children"
|
|
else:
|
|
self.rootelement = obj
|
|
|
|
def getRootObject(self):
|
|
return self.rootelement
|
|
|
|
def _toAttrName(obj, name):
|
|
if (hasattr(obj, "__xmlrename__")):
|
|
for key, val in obj.__xmlrename__.iteritems():
|
|
if (name == val):
|
|
name = key
|
|
break
|
|
## if (name.startswith("__") and not name.endswith("__")):
|
|
## name = "_%s%s" % (obj.__class__.__name__, name)
|
|
return name
|
|
|
|
__typeMappingXsdToLang = {
|
|
"string": "str",
|
|
"char": "str",
|
|
"varchar": "str",
|
|
"date": "str", # ToDO Need to work out how to create lang date types
|
|
"boolean": "bool",
|
|
"decimal": "float", # ToDO Does python have a better fixed point type?
|
|
"int": "int",
|
|
"integer":"int",
|
|
"long": "long",
|
|
"float": "float",
|
|
"bool": "bool",
|
|
"str": "str",
|
|
"unicode": "unicode",
|
|
"short": "int",
|
|
"duration": "str", # see above (date)
|
|
"datetime": "str", # see above (date)
|
|
"time": "str", # see above (date)
|
|
"double": "float",
|
|
"QName" : "str",
|
|
"blob" : "str", # ag:blob
|
|
"currency" : "str", # ag:currency
|
|
}
|
|
|
|
def xsdToLangType(xsdType):
|
|
if xsdType.startswith(XMLSCHEMA_XSD_URL):
|
|
xsdType = xsdType[len(XMLSCHEMA_XSD_URL)+1:]
|
|
elif xsdType.startswith(AG_URL):
|
|
xsdType = xsdType[len(AG_URL)+1:]
|
|
langType = __typeMappingXsdToLang.get(xsdType)
|
|
if (langType == None):
|
|
raise Exception("Unknown xsd type %s" % xsdType)
|
|
return langType
|
|
|
|
def langToXsdType(langType):
|
|
if langType in asDict(__typeMappingXsdToLang):
|
|
return '%s:%s' % (XMLSCHEMA_XSD_URL, langType)
|
|
return langType
|
|
|
|
def _getXmlValue(langValue):
|
|
if (isinstance(langValue, bool)):
|
|
return str(langValue).lower()
|
|
elif (isinstance(langValue, unicode)):
|
|
return langValue.encode()
|
|
else:
|
|
return str(langValue)
|
|
|
|
def unmarshal(xmlstr, knownTypes=None, knownNamespaces=None, xmlSource=None):
|
|
objectfactory = XMLObjectFactory(knownTypes, knownNamespaces)
|
|
try:
|
|
xml.sax.parseString(xmlstr, objectfactory)
|
|
except xml.sax.SAXParseException, errorData:
|
|
if xmlSource == None:
|
|
xmlSource = 'unknown'
|
|
errorString = 'SAXParseException ("%s") detected at line %d, column %d in XML document from source "%s" ' % (errorData.getMessage(), errorData.getLineNumber(), errorData.getColumnNumber(), xmlSource)
|
|
raise UnmarshallerException(errorString)
|
|
return objectfactory.getRootObject()
|
|
|
|
def marshal(obj, elementName=None, prettyPrint=False, marshalType=True, indent=0, knownTypes=None, knownNamespaces=None, encoding=-1):
|
|
## print '[marshal] entered with elementName = "%s"' % (elementName)
|
|
worker = XMLMarshalWorker(prettyPrint=prettyPrint, marshalType=marshalType, knownTypes=knownTypes, knownNamespaces=knownNamespaces)
|
|
if obj != None and hasattr(obj, '__xmldeepexclude__'):
|
|
worker.xmldeepexclude = obj.__xmldeepexclude__
|
|
xmlstr = "".join(worker._marshal(obj, elementName, indent=indent))
|
|
if (isinstance(encoding, basestring)):
|
|
return '<?xml version="1.0" encoding="%s"?>\n%s' % (encoding, xmlstr.encode(encoding))
|
|
elif (encoding == None):
|
|
return xmlstr
|
|
else:
|
|
return '<?xml version="1.0" encoding="%s"?>\n%s' % (sys.getdefaultencoding(), xmlstr)
|
|
|
|
class XMLMarshalWorker(object):
|
|
def __init__(self, marshalType=True, prettyPrint=False, knownTypes=None, knownNamespaces=None):
|
|
if knownTypes == None:
|
|
self.knownTypes = {}
|
|
else:
|
|
self.knownTypes = knownTypes
|
|
if knownNamespaces == None:
|
|
self.knownNamespaces = {}
|
|
else:
|
|
self.knownNamespaces = knownNamespaces
|
|
self.prettyPrint = prettyPrint
|
|
self.marshalType = marshalType
|
|
self.xmldeepexclude = []
|
|
self.nsstack = []
|
|
|
|
def getNSPrefix(self):
|
|
if len(self.nsstack) > 0:
|
|
return self.nsstack[-1].prefix
|
|
return ''
|
|
|
|
def isKnownType(self, elementName):
|
|
tagLongNs = None
|
|
nse = self.nsstack[-1]
|
|
i = elementName.rfind(':')
|
|
if i > 0:
|
|
prefix = elementName[:i]
|
|
name = elementName[i+1:]
|
|
else:
|
|
prefix = DEFAULT_NAMESPACE_KEY
|
|
name = elementName
|
|
for shortNs, longNs in nse.nameSpaces.iteritems():
|
|
if shortNs == prefix:
|
|
tagLongNs = longNs
|
|
break
|
|
if tagLongNs == None:
|
|
knownTagName = elementName
|
|
else:
|
|
knownShortNs = self.knownNamespaces[tagLongNs]
|
|
knownTagName = knownShortNs + ':' + name
|
|
if (knownTagName in asDict(self.knownTypes)):
|
|
knownClass = self.knownTypes[knownTagName]
|
|
return True
|
|
return False
|
|
|
|
def popNSStack(self):
|
|
self.nsstack.pop()
|
|
|
|
def appendNSStack(self, obj):
|
|
nameSpaces = {}
|
|
defaultLongNS = None
|
|
for nse in self.nsstack:
|
|
for k, v in nse.nsMap.iteritems():
|
|
nameSpaces[k] = v
|
|
if k == DEFAULT_NAMESPACE_KEY:
|
|
defaultLongNS = v
|
|
newNS = NsElement()
|
|
nameSpaceAttrs = ""
|
|
if hasattr(obj, "__xmlnamespaces__"):
|
|
ns = getattr(obj, "__xmlnamespaces__")
|
|
keys = ns.keys()
|
|
keys.sort()
|
|
for nameSpaceKey in keys:
|
|
nameSpaceUrl = ns[nameSpaceKey]
|
|
if nameSpaceUrl in nameSpaces.values():
|
|
for k, v in nameSpaces.iteritems():
|
|
if v == nameSpaceUrl:
|
|
nameSpaceKey = k
|
|
break
|
|
else:
|
|
if nameSpaceKey == "":
|
|
defaultLongNS = nameSpaceUrl
|
|
nameSpaces[DEFAULT_NAMESPACE_KEY] = nameSpaceUrl
|
|
newNS.nsMap[DEFAULT_NAMESPACE_KEY] = nameSpaceUrl
|
|
nameSpaceAttrs += ' xmlns="%s" ' % (nameSpaceUrl)
|
|
else:
|
|
nameSpaces[nameSpaceKey] = nameSpaceUrl
|
|
newNS.nsMap[nameSpaceKey] = nameSpaceUrl
|
|
nameSpaceAttrs += ' xmlns:%s="%s" ' % (nameSpaceKey, nameSpaceUrl)
|
|
nameSpaceAttrs = nameSpaceAttrs.rstrip()
|
|
if len(self.nsstack) > 0:
|
|
newNS.prefix = self.nsstack[-1].prefix
|
|
else:
|
|
newNS.prefix = ''
|
|
if hasattr(obj, "__xmldefaultnamespace__"):
|
|
longPrefixNS = getattr(obj, "__xmldefaultnamespace__")
|
|
if longPrefixNS == defaultLongNS:
|
|
newNS.prefix = ''
|
|
else:
|
|
try:
|
|
for k, v in nameSpaces.iteritems():
|
|
if v == longPrefixNS:
|
|
newNS.prefix = k + ':'
|
|
break;
|
|
## print '[appendNSStack] found longPrefixNS in nameSpaces = "%s"' % (newNS.prefix)
|
|
except:
|
|
if (longPrefixNS in asDict(self.knownNamespaces)):
|
|
newNS.prefix = self.knownNamespaces[longPrefixNS] + ':'
|
|
else:
|
|
raise MarshallerException('Error marshalling __xmldefaultnamespace__ ("%s") not defined in namespace stack' % (longPrefixNS))
|
|
if hasattr(obj, "targetNamespace"):
|
|
newNS.targetNS = obj.targetNamespace
|
|
elif len(self.nsstack) > 0:
|
|
newNS.targetNS = self.nsstack[-1].targetNS
|
|
newNS.nameSpaces = nameSpaces
|
|
self.nsstack.append(newNS)
|
|
return nameSpaceAttrs
|
|
|
|
def contractQName(self, value, obj, attr):
|
|
value = langToXsdType(value)
|
|
i = value.rfind(':')
|
|
if i >= 0:
|
|
longNS = value[:i]
|
|
else:
|
|
# the value doesn't have a namespace and we couldn't map it to an XSD type...what to do?
|
|
# (a) just write it, as is, and hope it's in the default namespace (for now)
|
|
# (b) throw an exception so we can track down the bad code (later)
|
|
return value
|
|
if (longNS in self.nsstack[-1].nameSpaces.values()):
|
|
for kShort, vLong in self.nsstack[-1].nameSpaces.iteritems():
|
|
if vLong == longNS:
|
|
shortNS = kShort
|
|
break
|
|
else:
|
|
shortNS = longNS # if we can't find the long->short mappping, just use longNS
|
|
if shortNS == DEFAULT_NAMESPACE_KEY:
|
|
value = value[i+1:]
|
|
else:
|
|
value = shortNS + ':' + value[i+1:]
|
|
return value
|
|
|
|
def _genObjTypeStr(self, typeString):
|
|
if self.marshalType:
|
|
return ' objtype="%s"' % typeString
|
|
return ""
|
|
|
|
def _marshal(self, obj, elementName=None, nameSpacePrefix="", indent=0):
|
|
if (obj != None):
|
|
xmlMarshallerLogger.debug("--> _marshal: elementName=%s%s, type=%s, obj=%s, indent=%d" % (nameSpacePrefix, elementName, type(obj), str(obj), indent))
|
|
else:
|
|
xmlMarshallerLogger.debug("--> _marshal: elementName=%s%s, obj is None, indent=%d" % (nameSpacePrefix, elementName, indent))
|
|
excludeAttrs = []
|
|
excludeAttrs.extend(self.xmldeepexclude)
|
|
if hasattr(obj, "__xmlexclude__"):
|
|
excludeAttrs.extend(obj.__xmlexclude__)
|
|
prettyPrint = self.prettyPrint
|
|
knownTypes = self.knownTypes
|
|
xmlString = None
|
|
if self.prettyPrint or indent:
|
|
prefix = " "*indent
|
|
newline = "\n"
|
|
increment = 2
|
|
else:
|
|
prefix = ""
|
|
newline = ""
|
|
increment = 0
|
|
## Determine the XML element name. If it isn"t specified in the
|
|
## parameter list, look for it in the __xmlname__ Lang
|
|
## attribute, else use the default generic BASETYPE_ELEMENT_NAME.
|
|
nameSpaceAttrs = self.appendNSStack(obj)
|
|
nameSpacePrefix = self.getNSPrefix()
|
|
if not elementName:
|
|
if hasattr(obj, "__xmlname__"):
|
|
elementName = nameSpacePrefix + obj.__xmlname__
|
|
else:
|
|
elementName = nameSpacePrefix + BASETYPE_ELEMENT_NAME
|
|
else:
|
|
elementName = nameSpacePrefix + elementName
|
|
## print '[XMLMarshalWorker._marshal] elementName "%s"; nameSpaceAttrs is "%s"' % (elementName, nameSpaceAttrs)
|
|
|
|
if (hasattr(obj, "__xmlsequencer__")) and (obj.__xmlsequencer__ != None):
|
|
if (XMLSCHEMA_XSD_URL in self.nsstack[-1].nameSpaces.values()):
|
|
for kShort, vLong in self.nsstack[-1].nameSpaces.iteritems():
|
|
if vLong == XMLSCHEMA_XSD_URL:
|
|
xsdPrefix = kShort + ':'
|
|
break
|
|
else:
|
|
xsdPrefix = 'xs:'
|
|
elementAdd = xsdPrefix + obj.__xmlsequencer__
|
|
else:
|
|
elementAdd = None
|
|
|
|
## print "marshal: entered with elementName: ", elementName
|
|
members_to_skip = []
|
|
## Add more members_to_skip based on ones the user has selected
|
|
## via the __xmlexclude__ and __xmldeepexclude__ attributes.
|
|
members_to_skip.extend(excludeAttrs)
|
|
# Marshal the attributes that are selected to be XML attributes.
|
|
objattrs = ""
|
|
className = ag_className(obj)
|
|
classNamePrefix = "_" + className
|
|
if hasattr(obj, "__xmlattributes__"):
|
|
xmlattributes = obj.__xmlattributes__
|
|
members_to_skip.extend(xmlattributes)
|
|
for attr in xmlattributes:
|
|
## print 'Processing element "%s"; attribute "%s"' % (elementName, attr)
|
|
internalAttrName = attr
|
|
ifDefPy()
|
|
if (attr.startswith("__") and not attr.endswith("__")):
|
|
internalAttrName = classNamePrefix + attr
|
|
endIfDef()
|
|
# Fail silently if a python attribute is specified to be
|
|
# an XML attribute but is missing.
|
|
## print "marshal: processing attribute ", internalAttrName
|
|
attrNameSpacePrefix = ""
|
|
if hasattr(obj, "__xmlattrnamespaces__"):
|
|
for nameSpaceKey, nameSpaceAttributes in getattr(obj, "__xmlattrnamespaces__").iteritems():
|
|
if nameSpaceKey == nameSpacePrefix[:-1]: # Don't need to specify attribute namespace if it is the same as its element
|
|
continue
|
|
if attr in nameSpaceAttributes:
|
|
attrNameSpacePrefix = nameSpaceKey + ":"
|
|
break
|
|
attrs = obj.__dict__
|
|
value = attrs.get(internalAttrName)
|
|
if (hasattr(obj, "__xmlrename__") and attr in asDict(obj.__xmlrename__)):
|
|
attr = obj.__xmlrename__[attr]
|
|
xsdElement = None
|
|
complexType = getComplexType(obj)
|
|
if (complexType != None):
|
|
xsdElement = complexType.findElement(attr)
|
|
if (xsdElement != None):
|
|
default = xsdElement.default
|
|
if (default != None):
|
|
if ((default == value) or (default == _getXmlValue(value))):
|
|
continue
|
|
else:
|
|
if (value == None):
|
|
continue
|
|
elif xsdElement.type == TYPE_QNAME:
|
|
value = self.contractQName(value, obj, attr)
|
|
elif value == None:
|
|
continue
|
|
|
|
# ToDO remove maxOccurs hack after bug 177 is fixed
|
|
if attr == "maxOccurs" and value == -1:
|
|
value = "unbounded"
|
|
|
|
if isinstance(value, bool):
|
|
if value == True:
|
|
value = "true"
|
|
else:
|
|
value = "false"
|
|
else:
|
|
value = objutils.toDiffableRepr(value)
|
|
|
|
objattrs += ' %s%s="%s"' % (attrNameSpacePrefix, attr, saxutils.escape(value))
|
|
## print "marshal: new objattrs is: ", objattrs
|
|
if (obj == None):
|
|
xmlString = [""]
|
|
elif isinstance(obj, bool):
|
|
objTypeStr = self._genObjTypeStr("bool")
|
|
xmlString = ['%s<%s%s>%s</%s>%s' % (prefix, elementName, objTypeStr, obj, elementName, newline)]
|
|
elif isinstance(obj, int):
|
|
objTypeStr = self._genObjTypeStr("int")
|
|
xmlString = ['%s<%s%s>%s</%s>%s' % (prefix, elementName, objTypeStr, str(obj), elementName, newline)]
|
|
elif isinstance(obj, long):
|
|
objTypeStr = self._genObjTypeStr("long")
|
|
xmlString = ['%s<%s%s>%s</%s>%s' % (prefix, elementName, objTypeStr, str(obj), elementName, newline)]
|
|
elif isinstance(obj, float):
|
|
objTypeStr = self._genObjTypeStr("float")
|
|
xmlString = ['%s<%s%s>%s</%s>%s' % (prefix, elementName, objTypeStr, str(obj), elementName, newline)]
|
|
elif isinstance(obj, unicode): # have to check before basestring - unicode is instance of base string
|
|
xmlString = ['%s<%s>%s</%s>%s' % (prefix, elementName, saxutils.escape(obj.encode()), elementName, newline)]
|
|
elif isinstance(obj, basestring):
|
|
xmlString = ['%s<%s>%s</%s>%s' % (prefix, elementName, saxutils.escape(obj), elementName, newline)]
|
|
elif isinstance(obj, list):
|
|
if len(obj) < 1:
|
|
xmlString = ""
|
|
else:
|
|
objTypeStr = self._genObjTypeStr("list")
|
|
xmlString = ['%s<%s%s>%s' % (prefix, elementName, objTypeStr, newline)]
|
|
for item in obj:
|
|
xmlString.extend(self._marshal(item, indent=indent+increment))
|
|
xmlString.append("%s</%s>%s" % (prefix, elementName, newline))
|
|
elif isinstance(obj, tuple):
|
|
if len(obj) < 1:
|
|
xmlString = ""
|
|
else:
|
|
objTypeStr = self._genObjTypeStr("list")
|
|
xmlString = ['%s<%s%s mutable="false">%s' % (prefix, elementName, objTypeStr, newline)]
|
|
for item in obj:
|
|
xmlString.extend(self._marshal(item, indent=indent+increment))
|
|
xmlString.append("%s</%s>%s" % (prefix, elementName, newline))
|
|
elif isinstance(obj, dict):
|
|
objTypeStr = self._genObjTypeStr("dict")
|
|
xmlString = ['%s<%s%s>%s' % (prefix, elementName, objTypeStr, newline)]
|
|
subprefix = prefix + " "*increment
|
|
subindent = indent + 2*increment
|
|
keys = obj.keys()
|
|
keys.sort()
|
|
for key in keys:
|
|
xmlString.append("%s<%s>%s" % (subprefix, DICT_ITEM_NAME, newline))
|
|
xmlString.extend(self._marshal(key, elementName=DICT_ITEM_KEY_NAME, indent=subindent))
|
|
xmlString.extend(self._marshal(obj[key], elementName=DICT_ITEM_VALUE_NAME, indent=subindent))
|
|
xmlString.append("%s</%s>%s" % (subprefix, DICT_ITEM_NAME, newline))
|
|
xmlString.append("%s</%s>%s" % (prefix, elementName, newline))
|
|
elif hasattr(obj, "__xmlcontent__"):
|
|
contentValue = getattr(obj, obj.__xmlcontent__)
|
|
if contentValue == None:
|
|
contentValue = ''
|
|
else:
|
|
contentValue = saxutils.escape(contentValue)
|
|
xmlString = ["%s<%s%s%s>%s</%s>%s" % (prefix, elementName, nameSpaceAttrs, objattrs, contentValue, elementName, newline)]
|
|
else:
|
|
# Only add the objtype if the element tag is unknown to us.
|
|
if (self.isKnownType(elementName) == True):
|
|
objTypeStr = ""
|
|
else:
|
|
objTypeStr = self._genObjTypeStr("%s.%s" % (obj.__class__.__module__, className))
|
|
xmlString = ['%s<%s%s%s%s' % (prefix, elementName, nameSpaceAttrs, objattrs, objTypeStr)]
|
|
# get the member, value pairs for the object, filtering out the types we don"t support
|
|
if (elementAdd != None):
|
|
prefix += increment*" "
|
|
indent += increment
|
|
xmlMemberString = []
|
|
if hasattr(obj, "__xmlbody__"):
|
|
xmlbody = getattr(obj, obj.__xmlbody__)
|
|
if xmlbody != None:
|
|
xmlMemberString.append(xmlbody)
|
|
else:
|
|
if hasattr(obj, "__xmlattrgroups__"):
|
|
attrGroups = obj.__xmlattrgroups__.copy()
|
|
if (not isinstance(attrGroups, dict)):
|
|
raise "__xmlattrgroups__ is not a dict, but must be"
|
|
for n in attrGroups.iterkeys():
|
|
members_to_skip.extend(attrGroups[n])
|
|
else:
|
|
attrGroups = {}
|
|
# add the list of all attributes to attrGroups
|
|
eList = obj.__dict__.keys()
|
|
eList.sort()
|
|
attrGroups["__nogroup__"] = eList
|
|
|
|
for eName, eList in attrGroups.iteritems():
|
|
if (eName != "__nogroup__"):
|
|
prefix += increment*" "
|
|
indent += increment
|
|
objTypeStr = self._genObjTypeStr("None")
|
|
xmlMemberString.append('%s<%s%s>%s' % (prefix, eName, objTypeStr, newline))
|
|
for name in eList:
|
|
value = obj.__dict__[name]
|
|
if eName == "__nogroup__" and name in members_to_skip: continue
|
|
if name.startswith("__") and name.endswith("__"): continue
|
|
if (hasattr(obj, "__xmlcdatacontent__") and (obj.__xmlcdatacontent__ == name)):
|
|
continue
|
|
subElementNameSpacePrefix = nameSpacePrefix
|
|
if hasattr(obj, "__xmlattrnamespaces__"):
|
|
for nameSpaceKey, nameSpaceValues in getattr(obj, "__xmlattrnamespaces__").iteritems():
|
|
if name in nameSpaceValues:
|
|
subElementNameSpacePrefix = nameSpaceKey + ":"
|
|
break
|
|
# handle sequences listed in __xmlflattensequence__
|
|
# specially: instead of listing the contained items inside
|
|
# of a separate list, as God intended, list them inside
|
|
# the object containing the sequence.
|
|
if (hasattr(obj, "__xmlflattensequence__") and (value != None) and (name in asDict(obj.__xmlflattensequence__))):
|
|
xmlnametuple = obj.__xmlflattensequence__[name]
|
|
if (xmlnametuple == None):
|
|
xmlnametuple = [name]
|
|
elif (not isinstance(xmlnametuple, (tuple,list))):
|
|
xmlnametuple = [str(xmlnametuple)]
|
|
xmlname = None
|
|
if (len(xmlnametuple) == 1):
|
|
xmlname = xmlnametuple[0]
|
|
## ix = 0
|
|
if not isinstance(value, (list, tuple)):
|
|
value = [value]
|
|
for seqitem in value:
|
|
## xmlname = xmlnametuple[ix]
|
|
## ix += 1
|
|
## if (ix >= len(xmlnametuple)):
|
|
## ix = 0
|
|
xmlMemberString.extend(self._marshal(seqitem, xmlname, subElementNameSpacePrefix, indent=indent+increment))
|
|
else:
|
|
if (hasattr(obj, "__xmlrename__") and name in asDict(obj.__xmlrename__)):
|
|
xmlname = obj.__xmlrename__[name]
|
|
else:
|
|
xmlname = name
|
|
xmlMemberString.extend(self._marshal(value, xmlname, subElementNameSpacePrefix, indent=indent+increment))
|
|
if (eName != "__nogroup__"):
|
|
xmlMemberString.append("%s</%s>%s" % (prefix, eName, newline))
|
|
prefix = prefix[:-increment]
|
|
indent -= increment
|
|
|
|
# if we have nested elements, add them here, otherwise close the element tag immediately.
|
|
newList = []
|
|
for s in xmlMemberString:
|
|
if (len(s) > 0): newList.append(s)
|
|
xmlMemberString = newList
|
|
if len(xmlMemberString) > 0:
|
|
xmlString.append(">")
|
|
if hasattr(obj, "__xmlbody__"):
|
|
xmlString.extend(xmlMemberString)
|
|
xmlString.append("</%s>%s" % (elementName, newline))
|
|
else:
|
|
xmlString.append(newline)
|
|
if (elementAdd != None):
|
|
xmlString.append("%s<%s>%s" % (prefix, elementAdd, newline))
|
|
xmlString.extend(xmlMemberString)
|
|
if (elementAdd != None):
|
|
xmlString.append("%s</%s>%s" % (prefix, elementAdd, newline))
|
|
prefix = prefix[:-increment]
|
|
indent -= increment
|
|
xmlString.append("%s</%s>%s" % (prefix, elementName, newline))
|
|
else:
|
|
if hasattr(obj, "__xmlcdatacontent__"):
|
|
cdataAttr = obj.__xmlcdatacontent__
|
|
cdataContent = obj.__dict__[cdataAttr]
|
|
xmlString.append("><![CDATA[%s]]></%s>%s" % (cdataContent, elementName, newline))
|
|
else:
|
|
xmlString.append("/>%s" % newline)
|
|
## return xmlString
|
|
xmlMarshallerLogger.debug("<-- _marshal: %s" % str(xmlString))
|
|
#print "<-- _marshal: %s" % str(xmlString)
|
|
self.popNSStack()
|
|
return xmlString
|
|
|
|
# A simple test, to be executed when the xmlmarshaller is run standalone
|
|
class MarshallerPerson:
|
|
__xmlname__ = "person"
|
|
__xmlexclude__ = ["fabulousness",]
|
|
__xmlattributes__ = ("nonSmoker",)
|
|
__xmlrename__ = {"_phoneNumber": "telephone"}
|
|
__xmlflattensequence__ = {"favoriteWords": ("vocabulary",)}
|
|
__xmlattrgroups__ = {"name": ["firstName", "lastName"], "address": ["addressLine1", "city", "state", "zip"]}
|
|
|
|
def setPerson(self):
|
|
self.firstName = "Albert"
|
|
self.lastName = "Camus"
|
|
self.addressLine1 = "23 Absurd St."
|
|
self.city = "Ennui"
|
|
self.state = "MO"
|
|
self.zip = "54321"
|
|
self._phoneNumber = "808-303-2323"
|
|
self.favoriteWords = ["angst", "ennui", "existence"]
|
|
self.phobias = ["war", "tuberculosis", "cars"]
|
|
self.weight = 150
|
|
self.fabulousness = "tres tres"
|
|
self.nonSmoker = False
|
|
|
|
if isMain(__name__):
|
|
p1 = MarshallerPerson()
|
|
p1.setPerson()
|
|
xmlP1 = marshal(p1, prettyPrint=True, encoding="utf-8")
|
|
print "\n########################"
|
|
print "# testPerson test case #"
|
|
print "########################"
|
|
print xmlP1
|
|
p2 = unmarshal(xmlP1)
|
|
xmlP2 = marshal(p2, prettyPrint=True, encoding="utf-8")
|
|
if xmlP1 == xmlP2:
|
|
print "Success: repeated marshalling yields identical results"
|
|
else:
|
|
print "Failure: repeated marshalling yields different results"
|
|
print xmlP2
|