def render(self, data, prettyprint=False):
"""
parameters:
data = dictionary of the things to be shown
prettyprint = flag for pretty printing the xml output (including whitespace and linebreaks)
"""
stream = StringIO()
xml = SimplerXMLGenerator(stream, self.charset)
xml.startDocument()
# add a comment
xml._write(self.comment)
# add namespace definitions
nsattrs = {}
nsattrs['version'] = self.version
#nsattrs['encoding'] = charser
nsattrs['xmlns:vosi'] = self.ns_vosiavail
#nsattrs['xmlns:xsi'] = self.ns_xsi
#nsattrs['xmlns:vs'] = self.ns_vs
# add root node
xml.startElement('vosi:availability', nsattrs)
# add mandatory node:
xml.startElement('vosi:available', {})
xml.characters(smart_unicode(data['available']))
xml.endElement('vosi:available')
# remove available from data dict
data.pop('available', None)
# add possible optional nodes:
for key in data.keys():
xml.startElement('vosi:' + key, {})
xml.characters(smart_unicode(data[key]))
xml.endElement('vosi:' + key)
xml.endElement('vosi:availability')
xml.endDocument()
xml_string = stream.getvalue()
# make the xml pretty, i.e. use linebreaks and indentation
# the sax XMLGenerator behind SimpleXMLGenerator does not seem to support this,
# thus need a library that can do it.
# TODO: since we use lxml anyway, maybe build the whole xml-tree with lxml.etree!
# NOTE: This removes any possibly existing comments from the xml output!
if prettyprint is True:
parsed = etree.fromstring(xml_string)
pretty_xml = etree.tostring(parsed, pretty_print=True)
xml_string = pretty_xml
return xml_string
def render(self, capabilities, prettyprint=False):
"""
parameters:
capabilities = queryset of voresource_capabilities
prettyprint = flag for pretty printing the xml output (including whitespace and linebreaks)
"""
stream = StringIO()
xml = SimplerXMLGenerator(stream, self.charset)
xml.startDocument()
# add a comment
xml._write(self.comment)
# add namespace definitions
nsattrs = {}
nsattrs['version'] = self.version
#nsattrs['encoding'] = charser
nsattrs['xmlns:vosi'] = self.ns_vosicap
nsattrs['xmlns:xsi'] = self.ns_xsi
nsattrs['xmlns:vs'] = self.ns_vs
nsattrs['xmlns:vr'] = self.ns_vr
# add root node
xml.startElement('vosi:capabilities', nsattrs)
# Add all the capabilities, including those for VOSI endpoint,
# extract them from the database using the provided queryset.
# The following lookup is not efficient, since there is a database
# call for each object, it would be more efficient to get a list of
# all capabilities, interfaces and accessurls and then match them here.
for capability in capabilities:
attrs = {}
if capability.standardID:
attrs['standardID'] = str(capability.standardID)
xml.startElement('capability', attrs)
interfaces = capability.voresource_interface_set.all()
for interface in interfaces:
attrs = {}
if interface.type:
attrs['xsi:type'] = interface.type
xml.startElement('interface', attrs)
accessurls = interface.voresource_accessurl_set.all()
for accessurl in accessurls:
attrs = {}
attrs[
'use'] = accessurl.use # throw error, if its not there?
xml.startElement('accessURL', attrs)
xml.characters(smart_unicode(accessurl.url))
xml.endElement('accessURL')
xml.endElement('interface')
xml.endElement('capability')
xml.endElement('vosi:capabilities')
xml.endDocument()
xml_string = stream.getvalue()
# make the xml pretty, i.e. use linebreaks and indentation
# the sax XMLGenerator behind SimpleXMLGenerator does not seem to support this,
# thus need a library that can do it.
# TODO: since we use lxml anyway, maybe build the whole xml-tree with lxml.etree!
# NOTE: This removes any possibly existing comments from the xml output!
if prettyprint is True:
parsed = etree.fromstring(xml_string)
pretty_xml = etree.tostring(parsed, pretty_print=True)
xml_string = pretty_xml
return xml_string
