def post_process_results(self, results, filter_):
rows2 = []
for row in results:
min_time = ht.to_naive_utc(ht.min_datetime(filter_.get('time_min', '')))
max_time = ht.to_naive_utc(ht.max_datetime(filter_.get('time_max', '')))
dataset_min_time = ht.to_naive_utc(ht.min_datetime(row['min_time']['value']))
dataset_max_time = ht.to_naive_utc(ht.max_datetime(row['max_time']['value']))
if max(min_time, dataset_min_time) <= min(max_time, dataset_max_time):
rows2.append(row)
return rows2
def _extract(self, dataset_filter=''):
rows = self._client.query_bindings_only('''
prefix void: <http://rdfs.org/ns/void#>
prefix dstats: <http://stats.lod2.eu/vocabulary/dataset#>
prefix xs: <http://www.w3.org/2001/XMLSchema#>
select ?dataset (min(?min_time) as ?min_time) (max(?max_time) as ?max_time)
where
{
?dataset void:propertyPartition ?dateTimePropertyPartition.
?dateTimePropertyPartition dstats:minValue ?min_time.
?dateTimePropertyPartition dstats:maxValue ?max_time.
filter(datatype(?min_time) = xs:dateTime)
filter(datatype(?max_time) = xs:dateTime)
''' + dataset_filter + '''
}
group by ?dataset
''')
self.entities = {}
for row in rows:
min_time = ht.to_naive_utc(
ht.min_datetime(row['min_time']['value']))
max_time = ht.to_naive_utc(
ht.max_datetime(row['max_time']['value']))
self.entities[row['dataset']['value']] = {
'min_time': min_time,
'max_time': max_time
}
self._extracted = True
def _extract(self, dataset_filter = ''):
rows = self._client.query_bindings_only('''
prefix void: <http://rdfs.org/ns/void#>
prefix dstats: <http://stats.lod2.eu/vocabulary/dataset#>
prefix xs: <http://www.w3.org/2001/XMLSchema#>
select ?dataset (min(?min_time) as ?min_time) (max(?max_time) as ?max_time)
where
{
?dataset void:propertyPartition ?dateTimePropertyPartition.
?dateTimePropertyPartition dstats:minValue ?min_time.
?dateTimePropertyPartition dstats:maxValue ?max_time.
filter(datatype(?min_time) = xs:dateTime)
filter(datatype(?max_time) = xs:dateTime)
''' + dataset_filter + '''
}
group by ?dataset
''')
self.entities = {}
for row in rows:
min_time = ht.to_naive_utc(ht.min_datetime(row['min_time']['value']))
max_time = ht.to_naive_utc(ht.max_datetime(row['max_time']['value']))
self.entities[row['dataset']['value']] = {'min_time': min_time, 'max_time': max_time}
self._extracted = True
def post_process_results(self, results, filter_):
rows2 = []
for row in results:
min_time = ht.to_naive_utc(
ht.min_datetime(filter_.get('time_min', '')))
max_time = ht.to_naive_utc(
ht.max_datetime(filter_.get('time_max', '')))
dataset_min_time = ht.to_naive_utc(
ht.min_datetime(row['min_time']['value']))
dataset_max_time = ht.to_naive_utc(
ht.max_datetime(row['max_time']['value']))
if max(min_time, dataset_min_time) <= min(max_time,
dataset_max_time):
rows2.append(row)
return rows2
def extract_search_subscription_time(self, subscription):
filters = subscription.definition['filters']
if 'time_min' in filters and 'time_max' in filters:
return {'min_time': ht.to_naive_utc(ht.min_datetime(filters['time_min'][0])),
'max_time': ht.to_naive_utc(ht.max_datetime(filters['time_max'][0]))}
return None
def extract_search_subscription_time(self, subscription):
filters = subscription.definition['filters']
if 'time_min' in filters and 'time_max' in filters:
return {
'min_time':
ht.to_naive_utc(ht.min_datetime(filters['time_min'][0])),
'max_time':
ht.to_naive_utc(ht.max_datetime(filters['time_max'][0]))
}
return None
