def parse_farm(xml_document):
"""Parse locate xml document from requesting GeoServer.
:param xml_document: XML document from GeoServer returns.
:type xml_document: basestring
:returns: Dictionary that contains envelope, farm id, etc
:rtype: dict
"""
feature = {}
try:
xmldoc = minidom.parseString(xml_document)
except ExpatError:
return feature
try:
wfs_xml_feature = xmldoc.getElementsByTagName('gml:featureMember')[0]
id_tag = settings.FARM_WORKSPACE + ':' + settings.FARM_ID_COLUMN
farm_id_xml = wfs_xml_feature.getElementsByTagName(id_tag)[0]
feature['farm_id'] = farm_id_xml.childNodes[0].nodeValue
geom_gml = wfs_xml_feature.getElementsByTagName(
'kartoza:wkb_geometry')[0]
geom_gml_dom = geom_gml.childNodes[0]
envelope = GEOSGeometry.from_gml(geom_gml_dom.toxml())
feature['envelope_extent'] = envelope.extent
feature['envelope_centroid'] = envelope.centroid.coords
return feature
except IndexError:
return feature
def parse_locate_return(xml_document, with_envelope=False):
"""Parse locate xml document from requesting GeoServer.
:param xml_document: XML document from GeoServer returns.
:type xml_document: basestring
:returns: A dictionary of farm ID as the key and its envelope as the value.
:rtype: dict
"""
xmldoc = minidom.parseString(xml_document)
features = {}
try:
wfs_xml_features = xmldoc.getElementsByTagName('wfs:member')
for wfs_xml_feature in wfs_xml_features:
id_tag = settings.FARM_WORKSPACE + ':' + settings.FARM_ID_COLUMN
farm_id_xml = wfs_xml_feature.getElementsByTagName(id_tag)[0]
farm_id = farm_id_xml.childNodes[0].nodeValue
if with_envelope:
bounded_gml = wfs_xml_feature.getElementsByTagName(
'gml:boundedBy')[0]
bounded_gml_dom = bounded_gml.childNodes[0]
envelope = GEOSGeometry.from_gml(
bounded_gml_dom.toxml()).extent
else:
envelope = None
features[farm_id] = envelope
return features
except IndexError:
return features
def from_xml(cls, element: Element):
"""Push the whole <gml:...> element into the GEOS parser.
This avoids having to support the whole GEOS logic.
GML is a complex beast with many different forms for the same thing:
http://erouault.blogspot.com/2014/04/gml-madness.html
"""
srs = CRS.from_string(get_attribute(element, "srsName"))
# Push the whole <gml:...> element into the GEOS parser.
# This avoids having to support the whole GEOS logic.
geos_data = GEOSGeometry.from_gml(tostring(element))
geos_data.srid = srs.srid
return cls(srs=srs, geos_data=geos_data)
