def __init__(self, connection, language="RDFS"):
# so f*****g bad.. or sad? well, it's too much for me to decide
Thing.factory = self
self.prefixes = {
"owl": OWL,
"rdf": RDF,
"rdfs": RDFS,
}
if language == "RDFS":
self.query = RDFSQueries(connection, self.prefixes)
class Factory(object):
def __init__(self, connection, language="RDFS"):
# so f*****g bad.. or sad? well, it's too much for me to decide
Thing.factory = self
self.prefixes = {
"owl": OWL,
"rdf": RDF,
"rdfs": RDFS,
}
if language == "RDFS":
self.query = RDFSQueries(connection, self.prefixes)
def all(self):
return self.query.all()
def add_namespace(self, **kwargs):
for k, v in kwargs.iteritems():
self.prefixes[k] = v.rstrip("#") + "#"
def get_properties(self, uri, mode):
uri = URIRef(uri)
if mode == "object":
raw_properties = self.query.available_object_properties(uri)
elif mode == "class":
raw_properties = self.query.available_class_properties(uri)
p = defaultdict(list)
for property in raw_properties:
p[property["prop"]["value"]].append(property)
return p
@memoize
def get_class(self, class_uri):
class_uri = URIRef(class_uri)
if self.query.is_class(class_uri):
base_class_uris = self.query.get_base_classes(class_uri)
if base_class_uris:
base_classes = [self.get_class(cl) for cl in base_class_uris]
else:
base_classes = [Thing]
namespace, classname = split_uri(unicode(class_uri))
cl = ClassCreator(str(classname), tuple(base_classes),
{
"uri": class_uri,
"factory": self,
})
return cl
# нет такого класса? создадим!
else:
if self.query.create_class(class_uri):
return self.get_class(class_uri)
else:
return None
@memoize
def get_object(self, obj_uri):
obj_uri = URIRef(obj_uri)
if self.query.is_object(obj_uri):
parent_class = self.query.get_parent_class(obj_uri)
if parent_class is None:
cl = Thing
else:
cl = self.get_class(parent_class)
obj = cl(obj_uri)
cache[obj_uri] = obj
raw_properties = self.get_properties(obj.uri, mode="object")
for key, values in raw_properties.items():
res = []
for value in values:
uri = URIRef(value["val"]["value"])
if value["val"]["type"] == "uri":
if self.query.is_object(uri):
val = self.get_object(uri)
elif self.query.is_class(uri):
val = self.get_class(uri)
elif value["val"]["type"] == "literal": # plain literal
v = value["val"]["value"]
l = value["val"].get("xml:lang", "en")
val = Literal(v, lang=l)
elif value["val"]["type"] == "literal-typed": # typed literal
v = value["val"]["value"]
d = value["val"].get("datatype")
val = Literal(v, datatype=d).toPython()
res.append(val)
if key == unicode(RDFS.label): # all(map(lambda x: isinstance(x, Literal), res)) and all([x.language for x in res]):
langs = [x.language for x in res]
res = namedtuple("Label", langs)(*res)
setattr(obj, URIRef(key), res)
return obj
return None