def ted(self):
response = self._get_request('ted', accept='text/turtle')
g = Graph()
g.parse(StringIO(response), format='turtle')
g = deskolemize(g)
ted = TED.from_graph(g)
return ted
def resources(self):
response = self._get_request('resources', accept='text/turtle')
g = Graph()
g.parse(StringIO(response), format='turtle')
g = deskolemize(g)
all_resources = set()
for uri in set(g.subjects()):
r_types = list(g.objects(predicate=RDF.type))
all_resources.add(Resource(URIRef(uri), r_types))
return all_resources
def get_thing(self, tid):
response = self._get_request('things/{}'.format(tid),
accept='text/turtle')
g = Graph()
g.parse(StringIO(response), format='turtle')
g = deskolemize(g)
try:
node = list(g.subjects(predicate=CORE.describedBy)).pop()
return Resource.from_graph(g, node, {})
except IndexError:
raise AttributeError(tid)
def deserialize(data, format):
g = Graph()
if format == TURTLE:
try:
g.parse(StringIO(data), format='turtle')
except BadSyntax as e:
raise ValueError(e.message)
else:
try:
ld_triples(json.loads(data), g)
except Exception as e:
raise ValueError(e.message)
return deskolemize(g)
def get_description(self, tdid, fetch=True):
try:
response = self._get_request('descriptions/{}'.format(tdid),
accept='text/turtle')
except IOError as e:
raise AttributeError(e.message['text'])
g = Graph()
g.parse(StringIO(response), format='turtle')
g = deskolemize(g)
return TD.from_graph(g,
list(g.subjects(RDF.type,
CORE.ThingDescription)).pop(), {},
fetch=fetch)
def discover(self, query, strict=False, lazy=True, **kwargs):
path = 'discover'
lazy_arg = 'min' if lazy else ''
strict_arg = 'strict' if strict else ''
args = '&'.join([lazy_arg, strict_arg])
if args:
path += '?' + args
try:
response = self._post_request(path,
query,
content_type='text/plain',
accept='text/turtle')
g = Graph()
g.parse(StringIO(response), format='turtle')
g = deskolemize(g)
ted = TED.from_graph(g, fetch=lazy, loader=self.__loader)
return ted
except IOError as e:
raise AttributeError(e.message)
def __loader(self, uri):
g = request_loader(uri)
if g:
return deskolemize(g)