def __dispatch_value_field(self,
ns_repo,
key,
value,
datatype,
sparql_endpoint=sparql.DEFAULT_SPARQL_ENDPOINT):
"""
Determines the value of a 'free-text' field using the rules given.
@param sparql_endpoint The URL of the NanoSPARQLServer REST-endpoint.
@return Returns the value imposed by an applicable rule or None if no rule was applicable.
"""
if key != 'type':
domain = ns_repo.resolve(key)
type = ns_repo.resolve(value)
for rule_domain, rule_type, rule_value in self.__value_rules:
dt_match = (isinstance(rule_value, int) and datatype == 'integer') \
or (isinstance(rule_value, float) and (datatype == 'float' or datatype == 'number')) \
or (isinstance(rule_value, str) and datatype == 'string') \
or (isinstance(rule_value, bool) and datatype == 'boolean')
if dt_match and sparql.classes_equivalent(
domain, rule_domain, endpoint=sparql_endpoint
) and sparql.classes_equivalent(
type, rule_type, endpoint=sparql_endpoint):
return rule_value
return None
def test_classes_equivalent(self):
self.assertTrue(
sparql.classes_equivalent(
'http://purl.org/iot/vocab/m3-lite#Thermometer',
'http://purl.oclc.org/NET/ssnx/meteo/aws#TemperatureSensor'))
self.assertFalse(
sparql.classes_equivalent(
'http://purl.org/iot/vocab/m3-lite#Thermometer',
'http://elite.polito.it/ontologies/dogont.owl#DeepFreezer'))
def __dispatch_oneof_field(self,
ns_repo,
options,
sparql_endpoint=sparql.DEFAULT_SPARQL_ENDPOINT):
"""
Determines the value of a 'oneOf' constrained field using the rules given.
@param sparql_endpoint The URL of the NanoSPARQLServer REST-endpoint.
@return Returns the value imposed by an applicable rule or None if no rule was applicable.
"""
for option in options:
for key, value in option.items():
if key != 'constant':
for rule_domain, rule_type in self.__oneof_rules:
domain = ns_repo.resolve(key)
type = ns_repo.resolve(value)
if sparql.classes_equivalent(
domain, rule_domain, endpoint=sparql_endpoint
) and sparql.classes_equivalent(
type, rule_type, endpoint=sparql_endpoint):
return option['constant']
return None
def type_equivalent_to(self,
types,
sparql_endpoint=sparql.DEFAULT_SPARQL_ENDPOINT):
"""
Checks whether the @type of this thing is equvalent to any of the given types.
@param types List of IRIs (either full or shorthands with prefixes defined in this TD)
@param sparql_endpoint The URL of the NanoSPARQLServer REST-endpoint.
@return Returns True if any of the types given is equivalent to @type of this TD. Returns False
if none of them is or @type is not set in this TD.
"""
if '@type' in self.__td.keys():
for type in types:
if sparql.classes_equivalent(
self.__ns_repo.resolve(self.__td['@type']),
self.__ns_repo.resolve(type), sparql_endpoint):
return True
return False
else:
return False
def get_event_by_types(self,
types,
sparql_endpoint=sparql.DEFAULT_SPARQL_ENDPOINT):
"""
Returns events equivalent to any of the given types.
@param types List of IRIs.
@param sparql_endpoint The URL of the NanoSPARQLServer REST-endpoint.
@return Any event equivalent to any given type or None if none found.
"""
ns_repo = self.namespace_repository()
for event in self.__td['events']:
if '@type' in event.keys():
if ns_repo.resolve(event['@type']) in types:
return TDEvent(self, event)
else:
for type in types:
if sparql.classes_equivalent(
type, ns_repo.resolve(event['@type']),
sparql_endpoint):
return TDEvent(self, event)
return None
def get_property_by_types(self,
types,
sparql_endpoint=sparql.DEFAULT_SPARQL_ENDPOINT):
"""
Returns properties equivalent to any of the given types.
@param types List of IRIs.
@param sparql_endpoint The URL of the NanoSPARQLServer REST-endpoint.
@return Any property equivalent to any given type or None if none found.
"""
ns_repo = self.namespace_repository()
for prop in self.__td['properties']:
if '@type' in prop.keys():
if ns_repo.resolve(prop['@type']) in types:
return TDProperty(self, prop)
else:
for type in types:
if sparql.classes_equivalent(
type, ns_repo.resolve(prop['@type']),
sparql_endpoint):
return TDProperty(self, prop)
return None
def has_all_events_of(self,
types,
sparql_endpoint=sparql.DEFAULT_SPARQL_ENDPOINT):
"""
Checks if this thing has an equivalent event for any of the given types.
@param types List of IRIs.
@param sparql_endpoint The URL of the NanoSPARQLServer REST-endpoint.
@rtype bool
@return Returns True iff there is an equivalent event for every given type.
"""
ns_repo = self.namespace_repository()
for type in types:
found_matching_event = False
for event in self.__td['events']:
if '@type' in event.keys():
if sparql.classes_equivalent(
ns_repo.resolve(type),
ns_repo.resolve(event['@type']), sparql_endpoint):
found_matching_event = True
if not found_matching_event:
return False
return True