def __init__(self, elem):
"""."""
self.name = xmltag_split(elem.tag)
# formatOptions
self.formatOptions = [f.text for f in elem.findall(nspath('Format', WMS_NAMESPACE))]
self.methods = []
for verb in elem.findall(nspath('DCPType/HTTP/*', WMS_NAMESPACE)):
url = verb.find(nspath('OnlineResource', WMS_NAMESPACE)).attrib['{http://www.w3.org/1999/xlink}href']
self.methods.append({'type': xmltag_split(verb.tag), 'url': url})
def _getStoredQueries(self):
''' gets descriptions of the stored queries available on the server '''
sqs=[]
#This method makes two calls to the WFS - one ListStoredQueries, and one DescribeStoredQueries. The information is then
#aggregated in 'StoredQuery' objects
method=nspath('Get')
#first make the ListStoredQueries response and save the results in a dictionary if form {storedqueryid:(title, returnfeaturetype)}
try:
base_url = next((m.get('url') for m in self.getOperationByName('ListStoredQueries').methods if m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
request = {'service': 'WFS', 'version': self.version, 'request': 'ListStoredQueries'}
encoded_request = urlencode(request)
u = urlopen(base_url, data=encoded_request, timeout=self.timeout)
tree=etree.fromstring(u.read())
tempdict={}
for sqelem in tree[:]:
title=rft=id=None
id=sqelem.get('id')
for elem in sqelem[:]:
if elem.tag==nspath('Title', WFS_NAMESPACE):
title=elem.text
elif elem.tag==nspath('ReturnFeatureType', WFS_NAMESPACE):
rft=elem.text
tempdict[id]=(title,rft) #store in temporary dictionary
#then make the DescribeStoredQueries request and get the rest of the information about the stored queries
try:
base_url = next((m.get('url') for m in self.getOperationByName('DescribeStoredQueries').methods if m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
request = {'service': 'WFS', 'version': self.version, 'request': 'DescribeStoredQueries'}
encoded_request = urlencode(request)
u = urlopen(base_url, data=encoded_request, timeout=to)
tree=etree.fromstring(u.read())
tempdict2={}
for sqelem in tree[:]:
params=[] #list to store parameters for the stored query description
id =sqelem.get('id')
for elem in sqelem[:]:
if elem.tag==nspath('Abstract', WFS_NAMESPACE):
abstract=elem.text
elif elem.tag==nspath('Parameter', WFS_NAMESPACE):
newparam=Parameter(elem.get('name'), elem.get('type'))
params.append(newparam)
tempdict2[id]=(abstract, params) #store in another temporary dictionary
#now group the results into StoredQuery objects:
for key in tempdict.keys():
abstract='blah'
parameters=[]
sqs.append(StoredQuery(key, tempdict[key][0], tempdict[key][1], tempdict2[key][0], tempdict2[key][1]))
return sqs
def __init__(self, infoset,namespace=DEFAULT_OWS_NAMESPACE):
self._root = infoset
val = self._root.find(util.nspath('ProviderName', namespace))
self.name = util.testXMLValue(val)
self.contact = ServiceContact(infoset, namespace)
val = self._root.find(util.nspath('ProviderSite', namespace))
if val is not None:
urlattrib=val.attrib[util.nspath('href', XLINK_NAMESPACE)]
self.url = util.testXMLValue(urlattrib, True)
else:
self.url =None
def __init__(self, elem):
"""."""
self.name = xmltag_split(elem.tag)
# formatOptions
self.formatOptions = [
f.text for f in elem.findall(nspath('Format', WMS_NAMESPACE))
]
self.methods = []
for verb in elem.findall(nspath('DCPType/HTTP/*', WMS_NAMESPACE)):
url = verb.find(nspath(
'OnlineResource',
WMS_NAMESPACE)).attrib['{http://www.w3.org/1999/xlink}href']
self.methods.append({'type': xmltag_split(verb.tag), 'url': url})
def __init__(self,infoset,namespace=DEFAULT_OWS_NAMESPACE):
self._root = infoset
val = self._root.find(util.nspath('Title', namespace))
self.title = util.testXMLValue(val)
val = self._root.find(util.nspath('Abstract', namespace))
self.abstract = util.testXMLValue(val)
self.keywords = []
for f in self._root.findall(util.nspath('Keywords/Keyword', namespace)):
if f.text is not None:
self.keywords.append(f.text)
val = self._root.find(util.nspath('AccessConstraints', namespace))
self.accessconstraints = util.testXMLValue(val)
val = self._root.find(util.nspath('Fees', namespace))
self.fees = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceType', namespace))
self.type = util.testXMLValue(val)
self.service=self.type #alternative? keep both?discuss
val = self._root.find(util.nspath('ServiceTypeVersion', namespace))
self.version = util.testXMLValue(val)
self.profiles = []
for p in self._root.findall(util.nspath('Profile', namespace)):
self.profiles.append(util.testXMLValue(val))
def __init__(self, infoset):
self._root = infoset
name = self._root.find(nspath('ContactInformation/ContactPersonPrimary/ContactOrganization', WMS_NAMESPACE))
if name is not None:
self.name = name.text
else:
self.name = None
self.url = self._root.find(nspath('OnlineResource', WMS_NAMESPACE)).attrib.get('{http://www.w3.org/1999/xlink}href', '')
# contact metadata
contact = self._root.find(nspath('ContactInformation', WMS_NAMESPACE))
# sometimes there is a contact block that is empty, so make
# sure there are children to parse
if contact is not None and contact[:] != []:
self.contact = ContactMetadata(contact)
else:
self.contact = None
def __init__(self,
url,
version='1.3.0',
xml=None,
username=None,
password=None,
parse_remote_metadata=False):
"""Initialize."""
self.url = url
self.username = username
self.password = password
self.version = version
self._capabilities = None
# Authentication handled by Reader
reader = WMSCapabilitiesReader(self.version,
url=self.url,
un=self.username,
pw=self.password)
if xml: # read from stored xml
self._capabilities = reader.readString(xml)
else: # read from server
self._capabilities = reader.read(self.url)
# avoid building capabilities metadata if the response is a ServiceExceptionReport
se = self._capabilities.find(nspath('ServiceException', WMS_NAMESPACE))
if se is not None:
err_message = str(se.text).strip()
raise ServiceException(err_message, xml)
# build metadata objects
self._buildMetadata(parse_remote_metadata)
def __init__(self, url, version='1.3.0', xml=None,
username=None, password=None, parse_remote_metadata=False):
"""Initialize."""
self.url = url
self.username = username
self.password = password
self.version = version
self._capabilities = None
# Authentication handled by Reader
reader = WMSCapabilitiesReader(self.version, url=self.url,
un=self.username, pw=self.password)
if xml: # read from stored xml
self._capabilities = reader.readString(xml)
else: # read from server
self._capabilities = reader.read(self.url)
# avoid building capabilities metadata if the response is a ServiceExceptionReport
se = self._capabilities.find(nspath('ServiceException', WMS_NAMESPACE))
if se is not None:
err_message = str(se.text).strip()
raise ServiceException(err_message, xml)
# build metadata objects
self._buildMetadata(parse_remote_metadata)
def _buildMetadata(self, parse_remote_metadata=False):
''' set up capabilities metadata objects '''
# serviceIdentification metadata
serviceelem = self._capabilities.find(nspath('Service', WMS_NAMESPACE))
self.identification = ServiceIdentification(serviceelem, self.version)
# serviceProvider metadata
self.provider = ServiceProvider(serviceelem)
# serviceOperations metadata
self.operations = []
for elem in self._capabilities.find(
nspath('Capability/Request', WMS_NAMESPACE))[:]:
self.operations.append(OperationMetadata(elem))
# serviceContents metadata: our assumption is that services use a top-level
# layer as a metadata organizer, nothing more.
self.contents = {}
caps = self._capabilities.find(nspath('Capability', WMS_NAMESPACE))
# recursively gather content metadata for all layer elements.
# To the WebMapService.contents store only metadata of named layers.
def gather_layers(parent_elem, parent_metadata):
for index, elem in enumerate(
parent_elem.findall(nspath('Layer', WMS_NAMESPACE))):
cm = ContentMetadata(
elem,
parent=parent_metadata,
index=index + 1,
parse_remote_metadata=parse_remote_metadata)
if cm.id:
if cm.id in self.contents:
warnings.warn(
'Content metadata for layer "%s" already exists. Using child layer'
% cm.id)
self.contents[cm.id] = cm
gather_layers(elem, cm)
gather_layers(caps, None)
# exceptions
self.exceptions = [
f.text for f in self._capabilities.findall(
nspath('Capability/Exception/Format', WMS_NAMESPACE))
]
def gather_layers(parent_elem, parent_metadata):
for index, elem in enumerate(parent_elem.findall(nspath('Layer', WMS_NAMESPACE))):
cm = ContentMetadata(elem, parent=parent_metadata, index=index + 1,
parse_remote_metadata=parse_remote_metadata)
if cm.id:
if cm.id in self.contents:
warnings.warn('Content metadata for layer "%s" already exists. Using child layer' % cm.id)
self.contents[cm.id] = cm
gather_layers(elem, cm)
def __init__(self, elem):
name = elem.find(
nspath('ContactPersonPrimary/ContactPerson', WMS_NAMESPACE))
if name is not None:
self.name = name.text
else:
self.name = None
email = elem.find('ContactElectronicMailAddress')
if email is not None:
self.email = email.text
else:
self.email = None
self.address = self.city = self.region = None
self.postcode = self.country = None
address = elem.find(nspath('ContactAddress', WMS_NAMESPACE))
if address is not None:
street = address.find(nspath('Address', WMS_NAMESPACE))
if street is not None:
self.address = street.text
city = address.find(nspath('City', WMS_NAMESPACE))
if city is not None:
self.city = city.text
region = address.find(nspath('StateOrProvince', WMS_NAMESPACE))
if region is not None:
self.region = region.text
postcode = address.find(nspath('PostCode', WMS_NAMESPACE))
if postcode is not None:
self.postcode = postcode.text
country = address.find(nspath('Country', WMS_NAMESPACE))
if country is not None:
self.country = country.text
organization = elem.find(
nspath('ContactPersonPrimary/ContactOrganization', WMS_NAMESPACE))
if organization is not None:
self.organization = organization.text
else:
self.organization = None
position = elem.find(nspath('ContactPosition', WMS_NAMESPACE))
if position is not None:
self.position = position.text
else:
self.position = None
def __init__(self, elem):
name = elem.find(nspath('ContactPersonPrimary/ContactPerson', WMS_NAMESPACE))
if name is not None:
self.name = name.text
else:
self.name = None
email = elem.find('ContactElectronicMailAddress')
if email is not None:
self.email = email.text
else:
self.email = None
self.address = self.city = self.region = None
self.postcode = self.country = None
address = elem.find(nspath('ContactAddress', WMS_NAMESPACE))
if address is not None:
street = address.find(nspath('Address', WMS_NAMESPACE))
if street is not None:
self.address = street.text
city = address.find(nspath('City', WMS_NAMESPACE))
if city is not None:
self.city = city.text
region = address.find(nspath('StateOrProvince', WMS_NAMESPACE))
if region is not None:
self.region = region.text
postcode = address.find(nspath('PostCode', WMS_NAMESPACE))
if postcode is not None:
self.postcode = postcode.text
country = address.find(nspath('Country', WMS_NAMESPACE))
if country is not None:
self.country = country.text
organization = elem.find(nspath('ContactPersonPrimary/ContactOrganization', WMS_NAMESPACE))
if organization is not None:
self.organization = organization.text
else:
self.organization = None
position = elem.find(nspath('ContactPosition', WMS_NAMESPACE))
if position is not None:
self.position = position.text
else:
self.position = None
def __init__(self, elem, namespace=DEFAULT_OWS_NAMESPACE):
self.exceptions = []
if hasattr(elem, 'getroot'):
elem = elem.getroot()
for i in elem.findall(util.nspath('Exception', namespace)):
tmp = {}
val = i.attrib.get('exceptionCode')
tmp['exceptionCode'] = util.testXMLValue(val, True)
val = i.attrib.get('locator')
tmp['locator'] = util.testXMLValue(val, True)
val = i.find(util.nspath('ExceptionText', namespace))
tmp['ExceptionText'] = util.testXMLValue(val)
self.exceptions.append(tmp)
# set topmost stacktrace as return message
self.code = self.exceptions[0]['exceptionCode']
self.locator = self.exceptions[0]['locator']
self.msg = self.exceptions[0]['ExceptionText']
self.xml = etree.tostring(elem)
def __init__(self, infoset):
self._root = infoset
name = self._root.find(
nspath(
'ContactInformation/ContactPersonPrimary/ContactOrganization',
WMS_NAMESPACE))
if name is not None:
self.name = name.text
else:
self.name = None
self.url = self._root.find(nspath(
'OnlineResource',
WMS_NAMESPACE)).attrib.get('{http://www.w3.org/1999/xlink}href',
'')
# contact metadata
contact = self._root.find(nspath('ContactInformation', WMS_NAMESPACE))
# sometimes there is a contact block that is empty, so make
# sure there are children to parse
if contact is not None and contact[:] != []:
self.contact = ContactMetadata(contact)
else:
self.contact = None
def __init__(self, infoset, version):
self._root = infoset
self.type = testXMLValue(self._root.find(nspath('Name', WMS_NAMESPACE)))
self.version = version
self.title = testXMLValue(self._root.find(nspath('Title', WMS_NAMESPACE)))
self.abstract = testXMLValue(self._root.find(nspath('Abstract', WMS_NAMESPACE)))
self.keywords = extract_xml_list(self._root.findall(nspath('KeywordList/Keyword', WMS_NAMESPACE)))
self.accessconstraints = testXMLValue(self._root.find(nspath('AccessConstraints', WMS_NAMESPACE)))
self.fees = testXMLValue(self._root.find(nspath('Fees', WMS_NAMESPACE)))
def __init__(self, elem, namespace=DEFAULT_OWS_NAMESPACE):
self.minx = None
self.miny = None
self.maxx = None
self.maxy = None
val = elem.attrib.get('crs')
if val is not None:
self.crs = crs.Crs(val)
else:
self.crs = None
val = elem.attrib.get('dimensions')
if val is not None:
self.dimensions = int(util.testXMLValue(val, True))
else: # assume 2
self.dimensions = 2
val = elem.find(util.nspath('LowerCorner', namespace))
tmp = util.testXMLValue(val)
if tmp is not None:
xy = tmp.split()
if len(xy) > 1:
if self.crs is not None and self.crs.axisorder == 'yx':
self.minx, self.miny = xy[1], xy[0]
else:
self.minx, self.miny = xy[0], xy[1]
val = elem.find(util.nspath('UpperCorner', namespace))
tmp = util.testXMLValue(val)
if tmp is not None:
xy = tmp.split()
if len(xy) > 1:
if self.crs is not None and self.crs.axisorder == 'yx':
self.maxx, self.maxy = xy[1], xy[0]
else:
self.maxx, self.maxy = xy[0], xy[1]
def _buildMetadata(self, parse_remote_metadata=False):
'''set up capabilities metadata objects: '''
#serviceIdentification metadata
serviceidentelem=self._capabilities.find(nspath('ServiceIdentification'))
self.identification=ServiceIdentification(serviceidentelem)
#need to add to keywords list from featuretypelist information:
featuretypelistelem=self._capabilities.find(nspath('FeatureTypeList', ns=WFS_NAMESPACE))
featuretypeelems=featuretypelistelem.findall(nspath('FeatureType', ns=WFS_NAMESPACE))
for f in featuretypeelems:
kwds=f.findall(nspath('Keywords/Keyword',ns=OWS_NAMESPACE))
if kwds is not None:
for kwd in kwds[:]:
if kwd.text not in self.identification.keywords:
self.identification.keywords.append(kwd.text)
#TODO: update serviceProvider metadata, miss it out for now
serviceproviderelem=self._capabilities.find(nspath('ServiceProvider'))
self.provider=ServiceProvider(serviceproviderelem)
#serviceOperations metadata
self.operations=[]
for elem in self._capabilities.find(nspath('OperationsMetadata'))[:]:
if elem.tag !=nspath('ExtendedCapabilities'):
self.operations.append(OperationsMetadata(elem))
#serviceContents metadata: our assumption is that services use a top-level
#layer as a metadata organizer, nothing more.
self.contents={}
featuretypelist=self._capabilities.find(nspath('FeatureTypeList',ns=WFS_NAMESPACE))
features = self._capabilities.findall(nspath('FeatureTypeList/FeatureType', ns=WFS_NAMESPACE))
for feature in features:
cm=ContentMetadata(feature, featuretypelist, parse_remote_metadata)
self.contents[cm.id]=cm
#exceptions
self.exceptions = [f.text for f \
in self._capabilities.findall('Capability/Exception/Format')]
def __init__(self, elem, namespace=DEFAULT_OWS_NAMESPACE):
if 'name' not in elem.attrib: # This is not a valid element
return
self.name = elem.attrib['name']
self.formatOptions = ['text/xml']
parameters = []
self.methods = []
self.constraints = []
for verb in elem.findall(util.nspath('DCP/HTTP/*', namespace)):
url = util.testXMLAttribute(verb, util.nspath('href', XLINK_NAMESPACE))
if url is not None:
verb_constraints = [Constraint(conts, namespace) for conts in verb.findall(util.nspath('Constraint', namespace))]
self.methods.append({'constraints' : verb_constraints, 'type' : util.xmltag_split(verb.tag), 'url': url})
for parameter in elem.findall(util.nspath('Parameter', namespace)):
if namespace == OWS_NAMESPACE_1_1_0:
parameters.append((parameter.attrib['name'], {'values': [i.text for i in parameter.findall(util.nspath('AllowedValues/Value', namespace))]}))
else:
parameters.append((parameter.attrib['name'], {'values': [i.text for i in parameter.findall(util.nspath('Value', namespace))]}))
self.parameters = dict(parameters)
for constraint in elem.findall(util.nspath('Constraint', namespace)):
self.constraints.append(Constraint(constraint, namespace))
def gather_layers(parent_elem, parent_metadata):
for index, elem in enumerate(
parent_elem.findall(nspath('Layer', WMS_NAMESPACE))):
cm = ContentMetadata(
elem,
parent=parent_metadata,
index=index + 1,
parse_remote_metadata=parse_remote_metadata)
if cm.id:
if cm.id in self.contents:
warnings.warn(
'Content metadata for layer "%s" already exists. Using child layer'
% cm.id)
self.contents[cm.id] = cm
gather_layers(elem, cm)
def _buildMetadata(self, parse_remote_metadata=False):
''' set up capabilities metadata objects '''
# serviceIdentification metadata
serviceelem = self._capabilities.find(nspath('Service', WMS_NAMESPACE))
self.identification = ServiceIdentification(serviceelem, self.version)
# serviceProvider metadata
self.provider = ServiceProvider(serviceelem)
# serviceOperations metadata
self.operations = []
for elem in self._capabilities.find(nspath('Capability/Request', WMS_NAMESPACE))[:]:
self.operations.append(OperationMetadata(elem))
# serviceContents metadata: our assumption is that services use a top-level
# layer as a metadata organizer, nothing more.
self.contents = {}
caps = self._capabilities.find(nspath('Capability', WMS_NAMESPACE))
# recursively gather content metadata for all layer elements.
# To the WebMapService.contents store only metadata of named layers.
def gather_layers(parent_elem, parent_metadata):
for index, elem in enumerate(parent_elem.findall(nspath('Layer', WMS_NAMESPACE))):
cm = ContentMetadata(elem, parent=parent_metadata, index=index + 1,
parse_remote_metadata=parse_remote_metadata)
if cm.id:
if cm.id in self.contents:
warnings.warn('Content metadata for layer "%s" already exists. Using child layer' % cm.id)
self.contents[cm.id] = cm
gather_layers(elem, cm)
gather_layers(caps, None)
# exceptions
self.exceptions = [f.text for f
in self._capabilities.findall(nspath('Capability/Exception/Format',
WMS_NAMESPACE))]
def __init__(self, infoset, version):
self._root = infoset
self.type = testXMLValue(self._root.find(nspath('Name',
WMS_NAMESPACE)))
self.version = version
self.title = testXMLValue(
self._root.find(nspath('Title', WMS_NAMESPACE)))
self.abstract = testXMLValue(
self._root.find(nspath('Abstract', WMS_NAMESPACE)))
self.keywords = extract_xml_list(
self._root.findall(nspath('KeywordList/Keyword', WMS_NAMESPACE)))
self.accessconstraints = testXMLValue(
self._root.find(nspath('AccessConstraints', WMS_NAMESPACE)))
self.fees = testXMLValue(self._root.find(nspath('Fees',
WMS_NAMESPACE)))
def getfeature(self, typename=None, filter=None, bbox=None, featureid=None,
featureversion=None, propertyname=None, maxfeatures=None,storedQueryID=None, storedQueryParams={},
method='Get', outputFormat=None, startindex=None):
"""Request and return feature data as a file-like object.
#TODO: NOTE: have changed property name from ['*'] to None - check the use of this in WFS 2.0
Parameters
----------
typename : list
List of typenames (string)
filter : string
XML-encoded OGC filter expression.
bbox : tuple
(left, bottom, right, top) in the feature type's coordinates == (minx, miny, maxx, maxy)
featureid : list
List of unique feature ids (string)
featureversion : string
Default is most recent feature version.
propertyname : list
List of feature property names. '*' matches all.
maxfeatures : int
Maximum number of features to be returned.
method : string
Qualified name of the HTTP DCP method to use.
outputFormat: string (optional)
Requested response format of the request.
startindex: int (optional)
Start position to return feature set (paging in combination with maxfeatures)
There are 3 different modes of use
1) typename and bbox (simple spatial query)
2) typename and filter (==query) (more expressive)
3) featureid (direct access to known features)
"""
url = data = None
if typename and type(typename) == type(""):
typename = [typename]
if method.upper() == "GET":
(url) = self.getGETGetFeatureRequest(typename, filter, bbox, featureid,
featureversion, propertyname,
maxfeatures, storedQueryID,
storedQueryParams, outputFormat, 'Get', startindex)
if log.isEnabledFor(logging.DEBUG):
log.debug('GetFeature WFS GET url %s'% url)
else:
(url,data) = self.getPOSTGetFeatureRequest()
# If method is 'Post', data will be None here
u = urlopen(url, data, self.timeout)
# check for service exceptions, rewrap, and return
# We're going to assume that anything with a content-length > 32k
# is data. We'll check anything smaller.
try:
length = int(u.info()['Content-Length'])
have_read = False
except KeyError:
data = u.read()
have_read = True
length = len(data)
if length < 32000:
if not have_read:
data = u.read()
try:
tree = etree.fromstring(data)
except BaseException:
# Not XML
return StringIO(data)
else:
if tree.tag == "{%s}ServiceExceptionReport" % OGC_NAMESPACE:
se = tree.find(nspath('ServiceException', OGC_NAMESPACE))
raise ServiceException(str(se.text).strip())
else:
return StringIO(data)
else:
if have_read:
return StringIO(data)
return u
def __init__(self, elem, parent, parse_remote_metadata=False, timeout=30):
"""."""
self.id = elem.find(nspath('Name',ns=WFS_NAMESPACE)).text
self.title = elem.find(nspath('Title',ns=WFS_NAMESPACE)).text
abstract = elem.find(nspath('Abstract',ns=WFS_NAMESPACE))
if abstract is not None:
self.abstract = abstract.text
else:
self.abstract = None
self.keywords = [f.text for f in elem.findall(nspath('Keywords',ns=WFS_NAMESPACE))]
# bboxes
self.boundingBoxWGS84 = None
b = elem.find(nspath('WGS84BoundingBox',ns=OWS_NAMESPACE))
if b is not None:
lc = b.find(nspath("LowerCorner",ns=OWS_NAMESPACE))
uc = b.find(nspath("UpperCorner",ns=OWS_NAMESPACE))
ll = [float(s) for s in lc.text.split()]
ur = [float(s) for s in uc.text.split()]
self.boundingBoxWGS84 = (ll[0],ll[1],ur[0],ur[1])
# there is no such think as bounding box
# make copy of the WGS84BoundingBox
self.boundingBox = (self.boundingBoxWGS84[0],
self.boundingBoxWGS84[1],
self.boundingBoxWGS84[2],
self.boundingBoxWGS84[3],
Crs("epsg:4326"))
# crs options
self.crsOptions = [Crs(srs.text) for srs in elem.findall(nspath('OtherCRS',ns=WFS_NAMESPACE))]
defaultCrs = elem.findall(nspath('DefaultCRS',ns=WFS_NAMESPACE))
if len(defaultCrs) > 0:
self.crsOptions.insert(0,Crs(defaultCrs[0].text))
# verbs
self.verbOptions = [op.tag for op \
in parent.findall(nspath('Operations/*',ns=WFS_NAMESPACE))]
self.verbOptions + [op.tag for op \
in elem.findall(nspath('Operations/*',ns=WFS_NAMESPACE)) \
if op.tag not in self.verbOptions]
#others not used but needed for iContentMetadata harmonisation
self.styles=None
self.timepositions=None
self.defaulttimeposition=None
# MetadataURLs
self.metadataUrls = []
for m in elem.findall('MetadataURL'):
metadataUrl = {
'type': testXMLValue(m.attrib['type'], attrib=True),
'format': m.find('Format').text.strip(),
'url': testXMLValue(m.find('OnlineResource').attrib['{http://www.w3.org/1999/xlink}href'], attrib=True)
}
if metadataUrl['url'] is not None and parse_remote_metadata: # download URL
try:
content = urllib2.urlopen(metadataUrl['url'], timeout=timeout)
doc = etree.parse(content)
try: # FGDC
metadataUrl['metadata'] = Metadata(doc)
except: # ISO
metadataUrl['metadata'] = MD_Metadata(doc)
except Exception:
metadataUrl['metadata'] = None
self.metadataUrls.append(metadataUrl)
def __init__(self, elem, namespace=DEFAULT_OWS_NAMESPACE):
self.name = elem.attrib.get('name')
self.values = [i.text for i in elem.findall(util.nspath('Value', namespace))]
self.values += [i.text for i in elem.findall(util.nspath('AllowedValues/Value', namespace))]
def __init__(self, infoset,namespace=DEFAULT_OWS_NAMESPACE):
self._root = infoset
val = self._root.find(util.nspath('ProviderName', namespace))
self.name = util.testXMLValue(val)
self.organization=util.testXMLValue(self._root.find(util.nspath('ContactPersonPrimary/ContactOrganization', namespace)))
val = self._root.find(util.nspath('ProviderSite', namespace))
if val is not None:
self.site = util.testXMLValue(val.attrib.get(util.nspath('href', XLINK_NAMESPACE)), True)
else:
self.site = None
val = self._root.find(util.nspath('ServiceContact/Role', namespace))
self.role = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/IndividualName', namespace))
self.name = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/PositionName', namespace))
self.position = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/ContactInfo/Phone/Voice', namespace))
self.phone = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/ContactInfo/Phone/Facsimile', namespace))
self.fax = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/ContactInfo/Address/DeliveryPoint', namespace))
self.address = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/ContactInfo/Address/City', namespace))
self.city = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/ContactInfo/Address/AdministrativeArea', namespace))
self.region = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/ContactInfo/Address/PostalCode', namespace))
self.postcode = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/ContactInfo/Address/Country', namespace))
self.country = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/ContactInfo/Address/ElectronicMailAddress', namespace))
self.email = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/ContactInfo/OnlineResource', namespace))
if val is not None:
self.url = util.testXMLValue(val.attrib.get(util.nspath('href', XLINK_NAMESPACE)), True)
else:
self.url = None
val = self._root.find(util.nspath('ServiceContact/ContactInfo/HoursOfService', namespace))
self.hours = util.testXMLValue(val)
val = self._root.find(util.nspath('ServiceContact/ContactInfo/ContactInstructions', namespace))
self.instructions = util.testXMLValue(val)
def __init__(self, elem, parent=None, index=0, parse_remote_metadata=False, timeout=30):
if strip_ns(elem.tag) != 'Layer':
raise ValueError('%s should be a Layer' % (elem,))
self.parent = parent
if parent:
self.index = "%s.%d" % (parent.index, index)
else:
self.index = str(index)
self.id = self.name = testXMLValue(elem.find(nspath('Name', WMS_NAMESPACE)))
# layer attributes
self.queryable = int(elem.attrib.get('queryable', 0))
self.cascaded = int(elem.attrib.get('cascaded', 0))
self.opaque = int(elem.attrib.get('opaque', 0))
self.noSubsets = int(elem.attrib.get('noSubsets', 0))
self.fixedWidth = int(elem.attrib.get('fixedWidth', 0))
self.fixedHeight = int(elem.attrib.get('fixedHeight', 0))
# title is mandatory property
self.title = None
title = testXMLValue(elem.find(nspath('Title', WMS_NAMESPACE)))
if title is not None:
self.title = title.strip()
self.abstract = testXMLValue(elem.find(nspath('Abstract', WMS_NAMESPACE)))
# bboxes
boxes = elem.findall(nspath('BoundingBox', WMS_NAMESPACE))
self.boundingBoxes = []
for b in boxes:
try:
# sometimes the SRS attribute is (wrongly) not provided
srs = b.attrib['CRS']
except KeyError:
srs = None
self.boundingBoxes.append((
float(b.attrib['minx']),
float(b.attrib['miny']),
float(b.attrib['maxx']),
float(b.attrib['maxy']),
srs,
))
if self.parent:
if hasattr(self.parent, 'boundingBox'):
self.boundingBoxes.append(self.parent.boundingBox)
self.boundingBoxes = list(set(self.boundingBoxes))
# ScaleHint
sh = elem.find(nspath('ScaleHint', WMS_NAMESPACE))
self.scaleHint = None
if sh is not None:
if 'min' in sh.attrib and 'max' in sh.attrib:
self.scaleHint = {'min': sh.attrib['min'], 'max': sh.attrib['max']}
attribution = elem.find(nspath('Attribution', WMS_NAMESPACE))
self.attribution = {}
if attribution is not None:
title = attribution.find(nspath('Title', WMS_NAMESPACE))
url = attribution.find(nspath('OnlineResource', WMS_NAMESPACE))
logo = attribution.find(nspath('LogoURL', WMS_NAMESPACE))
if title is not None:
self.attribution['title'] = title.text
if url is not None:
self.attribution['url'] = url.attrib['{http://www.w3.org/1999/xlink}href']
if logo is not None:
self.attribution['logo_size'] = (
int(logo.attrib['width']),
int(logo.attrib['height'])
)
self.attribution['logo_url'] = logo.find(
nspath('OnlineResource', WMS_NAMESPACE)
).attrib['{http://www.w3.org/1999/xlink}href']
b = elem.find(nspath('EX_GeographicBoundingBox', WMS_NAMESPACE))
if b is not None:
west_longitude = b.find(nspath('westBoundLongitude', WMS_NAMESPACE))
east_longitude = b.find(nspath('eastBoundLongitude', WMS_NAMESPACE))
south_latitude = b.find(nspath('southBoundLatitude', WMS_NAMESPACE))
north_latitude = b.find(nspath('northBoundLatitude', WMS_NAMESPACE))
self.boundingBoxWGS84 = (
float(west_longitude.text if west_longitude is not None else ''),
float(south_latitude.text if south_latitude is not None else ''),
float(east_longitude.text if east_longitude is not None else ''),
float(north_latitude.text if north_latitude is not None else ''),
)
elif self.parent:
self.boundingBoxWGS84 = self.parent.boundingBoxWGS84
else:
self.boundingBoxWGS84 = None
# TODO: get this from the bbox attributes instead (deal with parents)
# SRS options
self.crsOptions = []
# Copy any parent SRS options (they are inheritable properties)
if self.parent:
self.crsOptions = list(self.parent.crsOptions)
# Look for SRS option attached to this layer
if elem.find(nspath('CRS', WMS_NAMESPACE)) is not None:
# some servers found in the wild use a single SRS
# tag containing a whitespace separated list of SRIDs
# instead of several SRS tags. hence the inner loop
for srslist in map(lambda x: x.text, elem.findall(nspath('CRS', WMS_NAMESPACE))):
if srslist:
for srs in srslist.split():
self.crsOptions.append(srs)
# Get rid of duplicate entries
self.crsOptions = list(set(self.crsOptions))
# Set self.crsOptions to None if the layer (and parents) had no SRS options
if len(self.crsOptions) == 0:
# raise ValueError('%s no SRS available!?' % (elem,))
# Comment by D Lowe.
# Do not raise ValueError as it is possible that a layer is purely a parent layer and does not have SRS specified. Instead set crsOptions to None
# Comment by Jachym:
# Do not set it to None, but to [], which will make the code
# work further. Fixed by anthonybaxter
self.crsOptions = []
# Styles
self.styles = {}
# Copy any parent styles (they are inheritable properties)
if self.parent:
self.styles = self.parent.styles.copy()
# Get the styles for this layer (items with the same name are replaced)
for s in elem.findall(nspath('Style', WMS_NAMESPACE)):
name = s.find(nspath('Name', WMS_NAMESPACE))
title = s.find(nspath('Title', WMS_NAMESPACE))
if name is None or title is None:
raise ValueError('%s missing name or title' % (s,))
style = {'title': title.text}
# legend url
legend = s.find(nspath('LegendURL/OnlineResource', WMS_NAMESPACE))
if legend is not None:
style['legend'] = legend.attrib['{http://www.w3.org/1999/xlink}href']
self.styles[name.text] = style
# keywords
self.keywords = [f.text for f in elem.findall(nspath('KeywordList/Keyword', WMS_NAMESPACE))]
# timepositions - times for which data is available.
# return a tuple (for now) of (default, positions)
self.timepositions = []
for extent in elem.findall(nspath('Extent', WMS_NAMESPACE)):
if extent.attrib.get("name").lower() == 'time':
if extent.text:
timeposition = extent.text
defaulttimeposition = extent.attrib.get("default", '')
self.timepositions.append((defaulttimeposition, timeposition))
# Elevations - available vertical levels
self.elevations = None
for extent in elem.findall(nspath('Extent', WMS_NAMESPACE)):
if extent.attrib.get("name").lower() == 'elevation':
if extent.text:
self.elevations = extent.text.split(',')
break
# MetadataURLs
self.metadataUrls = []
for m in elem.findall(nspath('MetadataURL', WMS_NAMESPACE)):
metadataUrl = {
'type': testXMLValue(m.attrib['type'], attrib=True),
'format': testXMLValue(m.find(nspath('Format', WMS_NAMESPACE))),
'url': testXMLValue(m.find(nspath('OnlineResource', WMS_NAMESPACE)).attrib['{http://www.w3.org/1999/xlink}href'], attrib=True)
}
if metadataUrl['url'] is not None and parse_remote_metadata: # download URL
try:
content = urllib2.urlopen(metadataUrl['url'], timeout=timeout)
doc = etree.parse(content)
if metadataUrl['type'] is not None:
if metadataUrl['type'] == 'FGDC':
metadataUrl['metadata'] = Metadata(doc)
if metadataUrl['type'] == 'TC211':
metadataUrl['metadata'] = MD_Metadata(doc)
except Exception:
metadataUrl['metadata'] = None
self.metadataUrls.append(metadataUrl)
# DataURLs
self.dataUrls = []
for m in elem.findall(nspath('DataURL', WMS_NAMESPACE)):
dataUrl = {
'format': m.find(nspath('Format', WMS_NAMESPACE)).text.strip(),
'url': m.find(nspath('OnlineResource', WMS_NAMESPACE)).attrib['{http://www.w3.org/1999/xlink}href']
}
self.dataUrls.append(dataUrl)
self.layers = []
for child in elem.findall(nspath('Layer', WMS_NAMESPACE)):
self.layers.append(ContentMetadata(child, self))
def getpropertyvalue(self, query=None, storedquery_id=None, valuereference=None, typename=None, method=nspath('Get'),**kwargs):
''' the WFS GetPropertyValue method'''
try:
base_url = next((m.get('url') for m in self.getOperationByName('GetPropertyValue').methods if m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
request = {'service': 'WFS', 'version': self.version, 'request': 'GetPropertyValue'}
if query:
request['query'] = str(query)
if valuereference:
request['valueReference'] = str(valuereference)
if storedquery_id:
request['storedQuery_id'] = str(storedquery_id)
if typename:
request['typename']=str(typename)
if kwargs:
for kw in kwargs.keys():
request[kw]=str(kwargs[kw])
encoded_request=urlencode(request)
u = urlopen(base_url + encoded_request)
return u.read()
def __init__(self,
elem,
parent=None,
index=0,
parse_remote_metadata=False,
timeout=30):
if strip_ns(elem.tag) != 'Layer':
raise ValueError('%s should be a Layer' % (elem, ))
self.parent = parent
if parent:
self.index = "%s.%d" % (parent.index, index)
else:
self.index = str(index)
self.id = self.name = testXMLValue(
elem.find(nspath('Name', WMS_NAMESPACE)))
# layer attributes
self.queryable = int(elem.attrib.get('queryable', 0))
self.cascaded = int(elem.attrib.get('cascaded', 0))
self.opaque = int(elem.attrib.get('opaque', 0))
self.noSubsets = int(elem.attrib.get('noSubsets', 0))
self.fixedWidth = int(elem.attrib.get('fixedWidth', 0))
self.fixedHeight = int(elem.attrib.get('fixedHeight', 0))
# title is mandatory property
self.title = None
title = testXMLValue(elem.find(nspath('Title', WMS_NAMESPACE)))
if title is not None:
self.title = title.strip()
self.abstract = testXMLValue(
elem.find(nspath('Abstract', WMS_NAMESPACE)))
# bboxes
boxes = elem.findall(nspath('BoundingBox', WMS_NAMESPACE))
self.boundingBoxes = []
for b in boxes:
try:
# sometimes the SRS attribute is (wrongly) not provided
srs = b.attrib['CRS']
except KeyError:
srs = None
self.boundingBoxes.append((
float(b.attrib['minx']),
float(b.attrib['miny']),
float(b.attrib['maxx']),
float(b.attrib['maxy']),
srs,
))
if self.parent:
if hasattr(self.parent, 'boundingBox'):
self.boundingBoxes.append(self.parent.boundingBox)
self.boundingBoxes = list(set(self.boundingBoxes))
# ScaleHint
sh = elem.find(nspath('ScaleHint', WMS_NAMESPACE))
self.scaleHint = None
if sh is not None:
if 'min' in sh.attrib and 'max' in sh.attrib:
self.scaleHint = {
'min': sh.attrib['min'],
'max': sh.attrib['max']
}
attribution = elem.find(nspath('Attribution', WMS_NAMESPACE))
self.attribution = {}
if attribution is not None:
title = attribution.find(nspath('Title', WMS_NAMESPACE))
url = attribution.find(nspath('OnlineResource', WMS_NAMESPACE))
logo = attribution.find(nspath('LogoURL', WMS_NAMESPACE))
if title is not None:
self.attribution['title'] = title.text
if url is not None:
self.attribution['url'] = url.attrib[
'{http://www.w3.org/1999/xlink}href']
if logo is not None:
self.attribution['logo_size'] = (int(logo.attrib['width']),
int(logo.attrib['height']))
self.attribution['logo_url'] = logo.find(
nspath('OnlineResource', WMS_NAMESPACE)
).attrib['{http://www.w3.org/1999/xlink}href']
b = elem.find(nspath('EX_GeographicBoundingBox', WMS_NAMESPACE))
if b is not None:
west_longitude = b.find(nspath('westBoundLongitude',
WMS_NAMESPACE))
east_longitude = b.find(nspath('eastBoundLongitude',
WMS_NAMESPACE))
south_latitude = b.find(nspath('southBoundLatitude',
WMS_NAMESPACE))
north_latitude = b.find(nspath('northBoundLatitude',
WMS_NAMESPACE))
self.boundingBoxWGS84 = (
float(
west_longitude.text if west_longitude is not None else ''),
float(
south_latitude.text if south_latitude is not None else ''),
float(
east_longitude.text if east_longitude is not None else ''),
float(
north_latitude.text if north_latitude is not None else ''),
)
elif self.parent:
self.boundingBoxWGS84 = self.parent.boundingBoxWGS84
else:
self.boundingBoxWGS84 = None
# TODO: get this from the bbox attributes instead (deal with parents)
# SRS options
self.crsOptions = []
# Copy any parent SRS options (they are inheritable properties)
if self.parent:
self.crsOptions = list(self.parent.crsOptions)
# Look for SRS option attached to this layer
if elem.find(nspath('CRS', WMS_NAMESPACE)) is not None:
# some servers found in the wild use a single SRS
# tag containing a whitespace separated list of SRIDs
# instead of several SRS tags. hence the inner loop
for srslist in map(lambda x: x.text,
elem.findall(nspath('CRS', WMS_NAMESPACE))):
if srslist:
for srs in srslist.split():
self.crsOptions.append(srs)
# Get rid of duplicate entries
self.crsOptions = list(set(self.crsOptions))
# Set self.crsOptions to None if the layer (and parents) had no SRS options
if len(self.crsOptions) == 0:
# raise ValueError('%s no SRS available!?' % (elem,))
# Comment by D Lowe.
# Do not raise ValueError as it is possible that a layer is purely a parent layer and does not have SRS specified. Instead set crsOptions to None
# Comment by Jachym:
# Do not set it to None, but to [], which will make the code
# work further. Fixed by anthonybaxter
self.crsOptions = []
# Styles
self.styles = {}
# Copy any parent styles (they are inheritable properties)
if self.parent:
self.styles = self.parent.styles.copy()
# Get the styles for this layer (items with the same name are replaced)
for s in elem.findall(nspath('Style', WMS_NAMESPACE)):
name = s.find(nspath('Name', WMS_NAMESPACE))
title = s.find(nspath('Title', WMS_NAMESPACE))
if name is None or title is None:
raise ValueError('%s missing name or title' % (s, ))
style = {'title': title.text}
# legend url
legend = s.find(nspath('LegendURL/OnlineResource', WMS_NAMESPACE))
if legend is not None:
style['legend'] = legend.attrib[
'{http://www.w3.org/1999/xlink}href']
self.styles[name.text] = style
# keywords
self.keywords = [
f.text
for f in elem.findall(nspath('KeywordList/Keyword', WMS_NAMESPACE))
]
# timepositions - times for which data is available.
# return a tuple (for now) of (default, positions)
self.timepositions = []
for extent in elem.findall(nspath('Extent', WMS_NAMESPACE)):
if extent.attrib.get("name").lower() == 'time':
if extent.text:
timeposition = extent.text
defaulttimeposition = extent.attrib.get("default", '')
self.timepositions.append(
(defaulttimeposition, timeposition))
# Elevations - available vertical levels
self.elevations = None
for extent in elem.findall(nspath('Extent', WMS_NAMESPACE)):
if extent.attrib.get("name").lower() == 'elevation':
if extent.text:
self.elevations = extent.text.split(',')
break
# MetadataURLs
self.metadataUrls = []
for m in elem.findall(nspath('MetadataURL', WMS_NAMESPACE)):
metadataUrl = {
'type':
testXMLValue(m.attrib['type'], attrib=True),
'format':
testXMLValue(m.find(nspath('Format', WMS_NAMESPACE))),
'url':
testXMLValue(m.find(nspath('OnlineResource', WMS_NAMESPACE)).
attrib['{http://www.w3.org/1999/xlink}href'],
attrib=True)
}
if metadataUrl[
'url'] is not None and parse_remote_metadata: # download URL
try:
content = urllib2.urlopen(metadataUrl['url'],
timeout=timeout)
doc = etree.parse(content)
if metadataUrl['type'] is not None:
if metadataUrl['type'] == 'FGDC':
metadataUrl['metadata'] = Metadata(doc)
if metadataUrl['type'] == 'TC211':
metadataUrl['metadata'] = MD_Metadata(doc)
except Exception:
metadataUrl['metadata'] = None
self.metadataUrls.append(metadataUrl)
# DataURLs
self.dataUrls = []
for m in elem.findall(nspath('DataURL', WMS_NAMESPACE)):
dataUrl = {
'format':
m.find(nspath('Format', WMS_NAMESPACE)).text.strip(),
'url':
m.find(nspath('OnlineResource', WMS_NAMESPACE)).
attrib['{http://www.w3.org/1999/xlink}href']
}
self.dataUrls.append(dataUrl)
self.layers = []
for child in elem.findall(nspath('Layer', WMS_NAMESPACE)):
self.layers.append(ContentMetadata(child, self))