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DRY resources.aggregations

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This commit is contained in:
Marc Aymerich 2015-07-16 13:12:50 +00:00
parent 48a19d8be9
commit 63c9f381bc
2 changed files with 7 additions and 21 deletions
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2
TODO.md
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@ -423,5 +423,3 @@ Colaesce('total', 'computed_total')
Case Case
# case on payment transaction state ? case when trans.amount > # case on payment transaction state ? case when trans.amount >
# Yield multiple values on historic filter on all aggregators

26
orchestra/contrib/resources/aggregations.py
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@ -34,9 +34,8 @@ class Last(Aggregation):
if date is not None: if date is not None:
dataset = dataset.filter(created_at__lte=date) dataset = dataset.filter(created_at__lte=date)
return dataset return dataset
def historic_filter(self, dataset): def monthly_historic_filter(self, dataset):
yield (timezone.now(), self.filter(dataset))
now = timezone.now() now = timezone.now()
date = datetime.datetime( date = datetime.datetime(
year=now.year, year=now.year,
@ -54,6 +53,10 @@ class Last(Aggregation):
yield (date, dataset_copy) yield (date, dataset_copy)
date -= relativedelta(months=1) date -= relativedelta(months=1)
def historic_filter(self, dataset):
yield (timezone.now(), self.filter(dataset))
yield from self.monthly_historic_filter(dataset)
def compute_usage(self, dataset): def compute_usage(self, dataset):
values = dataset.values_list('value', flat=True) values = dataset.values_list('value', flat=True)
if values: if values:
@ -75,22 +78,7 @@ class MonthlySum(Last):
) )
def historic_filter(self, dataset): def historic_filter(self, dataset):
now = timezone.now() yield from self.monthly_historic_filter(dataset)
date = datetime.datetime(
year=now.year,
month=now.month,
day=1,
tzinfo=timezone.utc,
)
while True:
dataset_copy = copy.copy(dataset)
dataset_copy = self.filter(dataset_copy, date=date)
try:
dataset_copy[0]
except IndexError:
raise StopIteration
yield (date, dataset_copy)
date -= relativedelta(months=1)
class MonthlyAvg(MonthlySum): class MonthlyAvg(MonthlySum):