More updates to the docview library modules and sample apps from the
ActiveGrid folks. Their sample IDE is now able to integrate with Subversion. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@34158 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn
@@ -9,14 +9,17 @@
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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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from activegrid import util
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import inspect
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import __builtin__
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import sys
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from types import *
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import xml.sax
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import xml.sax.handler
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import __builtin__
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from xml.sax import saxutils
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import objutils
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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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@@ -147,52 +150,6 @@ MEMBERS_TO_SKIP = ('__module__', '__doc__', '__xmlname__', '__xmlattributes__',
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'__xmldefaultnamespace__', '__xmlattrnamespaces__',
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'__xmlattrgroups__')
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#WELL_KNOWN_OBJECTS = { #"xs:element" : "activegrid.model.schema.XsdElement",
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#"xs:complexType" : "activegrid.model.schema.XsdComplexType",
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#"xs:sequence" : "activegrid.model.schema.XsdSequence",
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#"xs:element" : "activegrid.model.schema.XsdElement",
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#"xs:key" : "activegrid.model.schema.XsdKey",
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#"xs:field" : "activegrid.model.schema.XsdKeyField",
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#"xs:keyref" : "activegrid.model.schema.XsdKeyRef",
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#"xs:selector" : "activegrid.model.schema.XsdKeySelector",
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#"xs:schema" : "activegrid.model.schema.Schema",
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#"ag:schemaOptions":"activegrid.model.schema.SchemaOptions",
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#"ag:debug" : "activegrid.model.processmodel.DebugOperation",
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#"ag:body" : "activegrid.model.processmodel.Body", # alan (start)
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#"ag:cssRule" : "activegrid.model.processmodel.CssRule",
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#"ag:datasource" : "activegrid.data.dataservice.DataSource",
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#"ag:deployment" : "activegrid.server.deployment.Deployment",
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#"ag:glue" : "activegrid.model.processmodel.Glue",
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#"ag:hr" : "activegrid.model.processmodel.HorizontalRow",
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#"ag:image" : "activegrid.model.processmodel.Image",
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#"ag:inputs" : "activegrid.model.processmodel.Inputs",
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#"ag:label" : "activegrid.model.processmodel.Label",
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#"ag:processmodel" : "activegrid.model.processmodel.ProcessModel",
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#"ag:processmodelref" : "activegrid.server.deployment.ProcessModelRef",
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#"ag:query" : "activegrid.model.processmodel.Query",
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#"ag:schemaref" : "activegrid.server.deployment.SchemaRef",
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#"ag:set" : "activegrid.model.processmodel.SetOperation",
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#"ag:text" : "activegrid.model.processmodel.Text",
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#"ag:title" : "activegrid.model.processmodel.Title",
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#"ag:view" : "activegrid.model.processmodel.View",
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#"bpws:case" : "activegrid.model.processmodel.BPELCase",
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#"bpws:invoke" : "activegrid.model.processmodel.BPELInvoke",
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#"bpws:otherwise" : "activegrid.model.processmodel.BPELOtherwise",
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#"bpws:process" : "activegrid.model.processmodel.BPELProcess",
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#"bpws:reply" : "activegrid.model.processmodel.BPELReply",
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#"bpws:switch" : "activegrid.model.processmodel.BPELSwitch",
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#"bpws:variable" : "activegrid.model.processmodel.BPELVariable",
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#"projectmodel" : "activegrid.tool.ProjectEditor.ProjectModel",
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#"wsdl:message" : "activegrid.model.processmodel.WSDLMessage",
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#"wsdl:part" : "activegrid.model.processmodel.WSDLPart",
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#"xforms:group" : "activegrid.model.processmodel.XFormsGroup",
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#"xforms:input" : "activegrid.model.processmodel.XFormsInput",
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#"xforms:label" : "activegrid.model.processmodel.XFormsLabel",
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#"xforms:output" : "activegrid.model.processmodel.XFormsOutput",
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#"xforms:secret" : "activegrid.model.processmodel.XFormsSecret",
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#"xforms:submit" : "activegrid.model.processmodel.XFormsSubmit"} # alan(end)
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################################################################################
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#
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# classes and functions
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@@ -200,45 +157,42 @@ MEMBERS_TO_SKIP = ('__module__', '__doc__', '__xmlname__', '__xmlattributes__',
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################################################################################
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def _objectfactory(objname, objargs=None, xsname=None):
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try:
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'''dynamically create an object based on the objname and return
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it. look it up in the BASETYPE_ELEMENT_MAP first.
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'''
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# split the objname into the typename and module path,
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# importing the module if need be.
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if not isinstance(objargs, list):
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objargs = [objargs]
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'''dynamically create an object based on the objname and return
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it. look it up in the BASETYPE_ELEMENT_MAP first.
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'''
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# split the objname into the typename and module path,
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# importing the module if need be.
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if not isinstance(objargs, list):
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objargs = [objargs]
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if (xsname):
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try:
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objname = knownGlobalTypes[xsname]
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except KeyError:
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pass
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if (xsname):
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try:
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objname = knownGlobalTypes[xsname]
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except KeyError:
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pass
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## print "[objectfactory] creating an object of type %s and value %s, xsname=%s" % (objname, objargs, xsname)
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objtype = objname.split('.')[-1]
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pathlist = objname.split('.')
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modulename = '.'.join(pathlist[0:-1])
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## print "[objectfactory] creating an object of type %s and value %s, xsname=%s" % (objname, objargs, xsname)
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objtype = objname.split('.')[-1]
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pathlist = objname.split('.')
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modulename = '.'.join(pathlist[0:-1])
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## print "[objectfactory] objtype is %s" % objtype
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## print "[objectfactory] objargs is %s" % `objargs`
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## since the bool constructor will turn a string of non-zero
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## length into True, we call it with no argument (yielding a
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## False) if the string contains 'false'
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if objtype == 'bool' and objargs[0].lower() == 'false':
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objargs = None
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## if objtype == 'str':
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## print type(objargs)
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## print "string we're unescaping: '%s'" % objargs[0]
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## objargs = saxutils.unescape(objargs[0])
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if objtype in ('float', 'int', 'str', 'long'):
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## print "[objectfactory] object [%s] %s(%r)" % (objname, objtype, objargs)
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if objname == 'bool':
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return not objargs[0].lower() == 'false'
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elif objname == 'str': # don't strip strings - blanks are significant !!!
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if len(objargs) > 0:
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return saxutils.unescape(objargs[0]).encode()
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else:
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return ''
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elif objname == 'unicode': # don't strip strings - blanks are significant !!!
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if len(objargs) > 0:
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return saxutils.unescape(objargs[0]).encode()
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else:
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return ''
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elif objtype in ('float', 'int', 'str', 'long'):
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objargs = [x.strip() for x in objargs]
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if objtype == 'str':
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objargs = [saxutils.unescape(x) for x in objargs]
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try:
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if __builtin__.__dict__.has_key(objname):
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module = __builtin__
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else:
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@@ -379,7 +333,7 @@ class XMLObjectFactory(xml.sax.ContentHandler):
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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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util.setattrignorecase(obj, _toAttrName(obj, attrname), attr)
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objutils.setattrignorecase(obj, _toAttrName(obj, attrname), attr)
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## obj.__dict__[_toAttrName(obj, attrname)] = attr
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# stuff any child attributes meant to be in a sequence via the __xmlflattensequence__
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flattenDict = {}
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@@ -407,9 +361,7 @@ class XMLObjectFactory(xml.sax.ContentHandler):
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try:
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## print "[endElement] obj.__dict__ is: ", obj.__dict__
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sequencevalue = obj.__dict__[sequencename]
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except AttributeError:
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sequencevalue = None
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except KeyError:
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except (AttributeError, KeyError):
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sequencevalue = None
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if sequencevalue == None:
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sequencevalue = []
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@@ -420,7 +372,7 @@ class XMLObjectFactory(xml.sax.ContentHandler):
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obj.append(child)
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else:
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## print "childname = %s, obj = %s, child = %s" % (childname, repr(obj), repr(child))
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util.setattrignorecase(obj, _toAttrName(obj, childname), child)
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objutils.setattrignorecase(obj, _toAttrName(obj, childname), child)
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obj.__dict__[_toAttrName(obj, childname)] = child
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if complexType:
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@@ -474,6 +426,8 @@ def xsdToPythonType(xsdType):
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def _getXmlValue(pythonValue):
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if (isinstance(pythonValue, bool)):
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return str(pythonValue).lower()
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elif (isinstance(pythonValue, unicode)):
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return pythonValue.encode()
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else:
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return str(pythonValue)
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@@ -488,7 +442,17 @@ def unmarshal(xmlstr, knownTypes=None):
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return objectfactory.getRootObject()
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def marshal(obj, elementName=None, nameSpacePrefix='', nameSpaces=None, prettyPrint=False, indent=0, knownTypes=None):
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def marshal(obj, elementName=None, prettyPrint=False, indent=0, knownTypes=None, withEncoding=True, encoding=None):
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xmlstr = ''.join(_marshal(obj, elementName, prettyPrint=prettyPrint, indent=indent, knownTypes=knownTypes))
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if withEncoding:
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if encoding is None:
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return '<?xml version="1.0" encoding="%s"?>\n%s' % (sys.getdefaultencoding(), xmlstr)
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else:
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return '<?xml version="1.0" encoding="%s"?>\n%s' % (encoding, xmlstr.encode(encoding))
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else:
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return xmlstr
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def _marshal(obj, elementName=None, nameSpacePrefix='', nameSpaces=None, prettyPrint=False, indent=0, knownTypes=None):
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if prettyPrint or indent:
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prefix = ' '*indent
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newline = '\n'
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@@ -563,7 +527,7 @@ def marshal(obj, elementName=None, nameSpacePrefix='', nameSpaces=None, prettyPr
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except KeyError:
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continue
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## # But, check and see if it is a property first:
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## if (hasPropertyValue(obj, attr)):
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## if (objutils.hasPropertyValue(obj, attr)):
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## value = getattr(obj, attr)
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## else:
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## continue
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@@ -593,7 +557,7 @@ def marshal(obj, elementName=None, nameSpacePrefix='', nameSpaces=None, prettyPr
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if hasattr(obj, '__xmlattrnamespaces__'):
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## print "marshal: found __xmlattrnamespaces__"
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for nameSpaceKey, nameSpaceAttributes in getattr(obj, '__xmlattrnamespaces__').items():
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if nameSpaceKey == nameSpacePrefix[:-1]: # Don't need to specify attribute namespace if it is the same as it selement
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if nameSpaceKey == nameSpacePrefix[:-1]: # Don't need to specify attribute namespace if it is the same as it's element
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continue
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if attr in nameSpaceAttributes:
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attrNameSpacePrefix = nameSpaceKey + ':'
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@@ -607,95 +571,76 @@ def marshal(obj, elementName=None, nameSpacePrefix='', nameSpaces=None, prettyPr
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objattrs += ' %s%s="%s"' % (attrNameSpacePrefix, attr, value)
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## print "marshal: new objattrs is: ", objattrs
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objtype = type(obj)
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if isinstance(obj, NoneType):
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#print "marshal: skipping an element with no type"
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return ''
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# return '%s<%s objtype="None"/>%s' % (prefix, elementName, newline)
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elif isinstance(obj, bool):
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xmlString = '%s<%s objtype="bool">%s</%s>%s' % (prefix, elementName, obj, elementName, newline)
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#print "marshal: returning a bool element: \n", xmlString
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return xmlString
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return ['%s<%s objtype="bool">%s</%s>%s' % (prefix, elementName, obj, elementName, newline)]
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elif isinstance(obj, int):
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xmlString = '''%s<%s objtype="int">%s</%s>%s''' % (prefix, elementName, str(obj), elementName, newline)
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#print "marshal: returning a int element: \n", xmlString
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return xmlString
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return ['''%s<%s objtype="int">%s</%s>%s''' % (prefix, elementName, str(obj), elementName, newline)]
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elif isinstance(obj, long):
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xmlString = '%s<%s objtype="long">%s</%s>%s' % (prefix, elementName, str(obj), elementName, newline)
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#print "marshal: returning a long element: \n", xmlString
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return xmlString
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return ['%s<%s objtype="long">%s</%s>%s' % (prefix, elementName, str(obj), elementName, newline)]
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elif isinstance(obj, float):
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xmlString = '%s<%s objtype="float">%s</%s>%s' % (prefix, elementName, str(obj), elementName, newline)
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#print "marshal: returning a float element: \n", xmlString
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return xmlString
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return ['%s<%s objtype="float">%s</%s>%s' % (prefix, elementName, str(obj), elementName, newline)]
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elif isinstance(obj, unicode): # have to check before basestring - unicode is instance of base string
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return ['''%s<%s>%s</%s>%s''' % (prefix, elementName, saxutils.escape(obj.encode()), elementName, newline)]
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elif isinstance(obj, basestring):
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xmlString = '''%s<%s>%s</%s>%s''' % (prefix, elementName, saxutils.escape(obj), elementName, newline)
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#print "marshal: returning a str element: \n", xmlString
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return xmlString
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## elif isinstance(obj, unicode):
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## return '''%s<%s>%s</%s>%s''' % (prefix, elementName, obj, elementName, newline)
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return ['''%s<%s>%s</%s>%s''' % (prefix, elementName, saxutils.escape(obj), elementName, newline)]
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elif isinstance(obj, list):
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if len(obj) < 1:
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#print "marshal: skipping an empty list"
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return ''
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xmlString = '%s<%s objtype="list">%s' % (prefix, elementName, newline)
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xmlString = ['%s<%s objtype="list">%s' % (prefix, elementName, newline)]
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for item in obj:
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xmlString += marshal(item, nameSpaces=nameSpaces, indent=indent+increment, knownTypes=knownTypes)
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xmlString += '%s</%s>%s' % (prefix, elementName, newline)
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#print "marshal: returning a list element: \n", xmlString
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xmlString.extend(_marshal(item, nameSpaces=nameSpaces, indent=indent+increment, knownTypes=knownTypes))
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xmlString.append('%s</%s>%s' % (prefix, elementName, newline))
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return xmlString
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elif isinstance(obj, tuple):
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if len(obj) < 1:
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#print "marshal: skipping an empty tuple"
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return ''
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xmlString = '%s<%s objtype="list" mutable="false">%s' % (prefix, elementName, newline)
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xmlString = ['%s<%s objtype="list" mutable="false">%s' % (prefix, elementName, newline)]
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for item in obj:
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xmlString += marshal(item, nameSpaces=nameSpaces, indent=indent+increment, knownTypes=knownTypes)
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xmlString += '%s</%s>%s' % (prefix, elementName, newline)
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#print "marshal: returning a tuple element: \n", xmlString
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xmlString.extend(_marshal(item, nameSpaces=nameSpaces, indent=indent+increment, knownTypes=knownTypes))
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xmlString.append('%s</%s>%s' % (prefix, elementName, newline))
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return xmlString
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elif isinstance(obj, dict):
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xmlString = '%s<%s objtype="dict">%s' % (prefix, elementName, newline)
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xmlString = ['%s<%s objtype="dict">%s' % (prefix, elementName, newline)]
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subprefix = prefix + ' '*increment
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subindent = indent + 2*increment
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for key, val in obj.iteritems():
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xmlString += "%s<key>%s%s%s</key>%s%s<value>%s%s%s</value>%s" \
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% (subprefix, newline, marshal(key, indent=subindent, knownTypes=knownTypes), subprefix, newline, subprefix, newline, marshal(val, nameSpaces=nameSpaces, indent=subindent, knownTypes=knownTypes), subprefix, newline)
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xmlString += '%s</%s>%s' % (prefix, elementName, newline)
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#print "marshal: returning a dict element: \n", xmlString
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xmlString.append("%s<key>%s" % (subprefix, newline))
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xmlString.extend(_marshal(key, indent=subindent, knownTypes=knownTypes))
|
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xmlString.append("%s</key>%s%s<value>%s" % (subprefix, newline, subprefix, newline))
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xmlString.extend(_marshal(val, nameSpaces=nameSpaces, indent=subindent, knownTypes=knownTypes))
|
||||
xmlString.append("%s</value>%s" % (subprefix, newline))
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xmlString.append('%s</%s>%s' % (prefix, elementName, newline))
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return xmlString
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else:
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moduleName = obj.__class__.__module__
|
||||
if (moduleName == "activegrid.model.schema"):
|
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## print "marshal: found an activegrid.model.schema class element"
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||||
xmlString = '%s<%s%s%s' % (prefix, elementName, nameSpaceAttrs, objattrs)
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||||
xmlString = ['%s<%s%s%s' % (prefix, elementName, nameSpaceAttrs, objattrs)]
|
||||
else:
|
||||
## print "marshal: found a ", moduleName, " class element"
|
||||
# Only add the objtype if the element tag is unknown to us.
|
||||
try:
|
||||
objname = knownTypes[elementName]
|
||||
## print "successfully mapped ", elementName, " to known-objtype ", objname
|
||||
xmlString = '%s<%s%s%s' % (prefix, elementName, nameSpaceAttrs, objattrs)
|
||||
xmlString = ['%s<%s%s%s' % (prefix, elementName, nameSpaceAttrs, objattrs)]
|
||||
except KeyError:
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||||
## print "failed to map elementName: ", elementName, "; knownTypes: ", knownTypes
|
||||
xmlString = '%s<%s%s%s objtype="%s.%s"' % (prefix, elementName, nameSpaceAttrs, objattrs, moduleName, className)
|
||||
xmlString = ['%s<%s%s%s objtype="%s.%s"' % (prefix, elementName, nameSpaceAttrs, objattrs, moduleName, className)]
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||||
## print "UnknownTypeException: Unknown type (%s.%s) passed to marshaller" % (moduleName, className)
|
||||
# get the member, value pairs for the object, filtering out
|
||||
# the types we don't support.
|
||||
## print "marshal: elementString: \n", xmlString
|
||||
# get the member, value pairs for the object, filtering out the types we don't support
|
||||
if (elementAdd != None):
|
||||
prefix += increment*' '
|
||||
indent += increment
|
||||
|
||||
xmlMemberString = ''
|
||||
xmlMemberString = []
|
||||
if hasattr(obj, '__xmlbody__'):
|
||||
xmlMemberString = getattr(obj, obj.__xmlbody__)
|
||||
xmlbody = getattr(obj, obj.__xmlbody__)
|
||||
if xmlbody != None:
|
||||
xmlMemberString.append(xmlbody)
|
||||
else:
|
||||
entryList = obj.__dict__.items()
|
||||
## # Add in properties
|
||||
## for key in obj.__class__.__dict__.iterkeys():
|
||||
## if (key not in members_to_skip and key not in obj.__dict__
|
||||
## and hasPropertyValue(obj, key)):
|
||||
## and objutils.hasPropertyValue(obj, key)):
|
||||
## value = getattr(obj, key)
|
||||
## entryList.append((key, value))
|
||||
entryList.sort()
|
||||
@@ -719,7 +664,7 @@ def marshal(obj, elementName=None, nameSpacePrefix='', nameSpaces=None, prettyPr
|
||||
if (eName != '__nogroup__'):
|
||||
prefix += increment*' '
|
||||
indent += increment
|
||||
xmlMemberString += '%s<%s objtype="None">%s' % (prefix, eName, newline)
|
||||
xmlMemberString.append('%s<%s objtype="None">%s' % (prefix, eName, newline))
|
||||
for name in eList:
|
||||
value = obj.__dict__[name]
|
||||
## print " ", name, " = ", value
|
||||
@@ -754,91 +699,38 @@ def marshal(obj, elementName=None, nameSpacePrefix='', nameSpaces=None, prettyPr
|
||||
xmlname = name
|
||||
## xmlname = name.lower()
|
||||
for seqitem in value:
|
||||
xmlMemberString += marshal(seqitem, xmlname, subElementNameSpacePrefix, nameSpaces=nameSpaces, indent=indent+increment, knownTypes=knownTypes)
|
||||
xmlMemberString.extend(_marshal(seqitem, xmlname, subElementNameSpacePrefix, nameSpaces=nameSpaces, indent=indent+increment, knownTypes=knownTypes))
|
||||
else:
|
||||
if (hasattr(obj, "__xmlrename__") and name in obj.__xmlrename__):
|
||||
xmlname = obj.__xmlrename__[name]
|
||||
else:
|
||||
xmlname = name
|
||||
## xmlname = name.lower()
|
||||
## # skip
|
||||
## if xmlname.startswith('_') and not xmlname.startswith('__'):
|
||||
## xmlname = xmlname[1:]
|
||||
## if (indent > 30):
|
||||
## print "getting pretty deep, xmlname = ", xmlname
|
||||
## print "marshal: marshalling ", xmlname
|
||||
xmlMemberString += marshal(value, xmlname, subElementNameSpacePrefix, nameSpaces=nameSpaces, indent=indent+increment, knownTypes=knownTypes)
|
||||
## print "marshal: back with new xmlMemberString: \n", xmlMemberString
|
||||
xmlMemberString.extend(_marshal(value, xmlname, subElementNameSpacePrefix, nameSpaces=nameSpaces, indent=indent+increment, knownTypes=knownTypes))
|
||||
if (eName != '__nogroup__'):
|
||||
## print "marshal: Completing attrGroup ", eName
|
||||
xmlMemberString += '%s</%s>%s' % (prefix, eName, newline)
|
||||
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.
|
||||
if xmlMemberString:
|
||||
xmlString += '>'
|
||||
xmlMemberString = filter(lambda x: len(x)>0, xmlMemberString)
|
||||
if len(xmlMemberString) > 0:
|
||||
xmlString.append('>')
|
||||
if hasattr(obj, '__xmlbody__'):
|
||||
xmlString += xmlMemberString
|
||||
xmlString += '</%s>%s' % (elementName, newline)
|
||||
xmlString.extend(xmlMemberString)
|
||||
xmlString.append('</%s>%s' % (elementName, newline))
|
||||
else:
|
||||
xmlString += newline
|
||||
xmlString.append(newline)
|
||||
if (elementAdd != None):
|
||||
xmlString += '%s<%s>%s' % (prefix, elementAdd, newline)
|
||||
xmlString += xmlMemberString
|
||||
xmlString.append('%s<%s>%s' % (prefix, elementAdd, newline))
|
||||
xmlString.extend(xmlMemberString)
|
||||
if (elementAdd != None):
|
||||
xmlString += '%s</%s>%s' % (prefix, elementAdd, newline)
|
||||
xmlString.append('%s</%s>%s' % (prefix, elementAdd, newline))
|
||||
prefix = prefix[:-increment]
|
||||
indent -= increment
|
||||
xmlString += '%s</%s>%s' % (prefix, elementName, newline)
|
||||
xmlString.append('%s</%s>%s' % (prefix, elementName, newline))
|
||||
else:
|
||||
xmlString = xmlString + '/>%s' % newline
|
||||
xmlString.append('/>%s' % newline)
|
||||
return xmlString
|
||||
|
||||
# We don't use this anymore but in case we want to get properties this is how
|
||||
# you do it
|
||||
def hasPropertyValue(obj, attr):
|
||||
hasProp = False
|
||||
try:
|
||||
prop = obj.__class__.__dict__[attr]
|
||||
if (isinstance(prop, property)):
|
||||
hasProp = hasattr(obj, attr)
|
||||
if (hasProp):
|
||||
# It's a property and it has a value but sometimes we don't want it.
|
||||
# If there is a _hasattr method execute it and the
|
||||
# result will tell us whether to include this value
|
||||
try:
|
||||
hasProp = obj._hasattr(attr)
|
||||
except:
|
||||
pass
|
||||
except KeyError:
|
||||
pass
|
||||
return hasProp
|
||||
|
||||
if __name__ == '__main__':
|
||||
from xmlmarshallertests import Person, marshalledint, marshalledlist
|
||||
|
||||
l = [1, 2, 3]
|
||||
d = {'1': 1, '2': 2}
|
||||
outerlist = [l]
|
||||
xmlstr = marshal(d, "d", prettyPrint=True)
|
||||
print xmlstr
|
||||
|
||||
person = Person()
|
||||
person.firstName = "Albert"
|
||||
person.lastName = "Camus"
|
||||
person.addressLine1 = "23 Absurd St."
|
||||
person.city = "Ennui"
|
||||
person.state = "MO"
|
||||
person.zip = "54321"
|
||||
person._phoneNumber = "808-303-2323"
|
||||
person.favoriteWords = ['angst', 'ennui', 'existence']
|
||||
person.weight = 150
|
||||
|
||||
xmlstring = marshal(person, 'person', prettyPrint=True)
|
||||
print xmlstring
|
||||
|
||||
obj = unmarshal(marshalledlist)
|
||||
print "obj has type %s and value %s" % (type(obj), str(obj))
|
||||
for item in obj:
|
||||
print "item: %s" % str(item)
|
||||
|
||||
Reference in New Issue
Block a user