blob: 1d93ccdd070c24f226b937f3ac1cb31fde2ca89e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
import os
from zope.interface import implements
from zope.interface import Attribute
from zope.interface import Interface
from lxml import etree
class IMyModel(Interface):
__name__ = Attribute('Name of the model instance')
class BfgElement(etree.ElementBase):
"""Handle access control and getitem behavior"""
implements(IMyModel)
@property
def __name__(self):
return self.xpath("@name")[0]
def __getitem__(self, child_name):
xp = "*[@name='%s']" % child_name
matches = self.xpath(xp)
if len(matches) == 0:
raise KeyError('No child found for %s' % child_name)
elif len(matches) > 1:
raise KeyError('More than one child for %s' % child_name)
else:
return matches[0]
def get_root(environ):
# Setup the custom parser with our BfgElement behavior
parser_lookup = etree.ElementDefaultClassLookup(element=BfgElement)
parser = etree.XMLParser()
parser.set_element_class_lookup(parser_lookup)
# Now load the XML file
here = os.path.join(os.path.dirname(__file__))
samplemodel = os.path.join(here, 'samplemodel.xml')
xmlstring = open(samplemodel).read()
root = etree.XML(xmlstring, parser)
return root
|
