src_prepare/euscan-ng
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Merge pull request #1 from bacher09/master

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Code refactoring
This commit is contained in:
Federico Scrinzi 2012-05-05 07:43:15 -07:00
commit 37a623a97a
1 changed files with 37 additions and 60 deletions
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97
euscanwww/djeuscan/managers.py
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@ -5,21 +5,39 @@ djeuscan.managers
from django.db import models
from djeuscan.helpers import xint, rename_fields, select_related_last_versions
def gen_n_function(field_name):
def n_method(self):
res = self.aggregate(models.Sum(field_name))[field_name + '__sum']
return xint(res)
n_method.func_name = field_name
return n_method
def gen_for_function(field):
def for_method(self, val, last_versions=False):
"""
Returns packages that belong to the given parametrs
"""
res = self.filter(**{field : val})
if last_versions:
select_related_last_versions(res)
return res
for_method.func_name = 'for_' + field
return for_method
N_LIST = ['n_packaged','n_overlay','n_versions']
ANNOTATE_DICT = { name: models.Sum(name) for name in N_LIST }
class PackageMixin(object):
def n_packaged(self):
res = self.aggregate(models.Sum('n_packaged'))['n_packaged__sum']
return xint(res)
def n_overlay(self):
res = self.aggregate(models.Sum('n_overlay'))['n_overlay__sum']
return xint(res)
def n_versions(self):
res = self.aggregate(models.Sum('n_versions'))['n_versions__sum']
return xint(res)
for name in N_LIST:
locals()[name] = gen_n_function(name)
def n_upstream(self):
return self.n_versions() - self.n_packaged() - self.n_overlay()
@ -27,11 +45,7 @@ class PackageMixin(object):
"""
Returns all the available categories
"""
return self.values('category').annotate(
n_packaged=models.Sum('n_packaged'),
n_overlay=models.Sum('n_overlay'),
n_versions=models.Sum('n_versions')
)
return self.values('category').annotate(**ANNOTATE_DICT)
def herds(self, rename=False):
"""
@ -40,11 +54,7 @@ class PackageMixin(object):
# FIXME: optimize the query, it uses 'LEFT OUTER JOIN' instead of
# 'INNER JOIN'
res = self.filter(herds__isnull=False)
res = res.values('herds__herd').annotate(
n_packaged=models.Sum('n_packaged'),
n_overlay=models.Sum('n_overlay'),
n_versions=models.Sum('n_versions')
)
res = res.values('herds__herd').annotate(**ANNOTATE_DICT)
if rename:
res = rename_fields(res, [('herds__herd', 'herd')])
@ -58,11 +68,7 @@ class PackageMixin(object):
res = self.filter(maintainers__isnull=False).values(
'maintainers__id', 'maintainers__name', 'maintainers__email'
)
res = res.annotate(
n_packaged=models.Sum('n_packaged'),
n_overlay=models.Sum('n_overlay'),
n_versions=models.Sum('n_versions')
)
res = res.annotate(**ANNOTATE_DICT)
if rename:
res = rename_fields(
@ -90,38 +96,9 @@ class PackageMixin(object):
)
return packages.filter(version__overlay=overlay).distinct()
def for_maintainer(self, maintainer, last_versions=False):
"""
Returns packages that belong to the given maintainer
"""
res = self.filter(maintainers__id=maintainer.id)
if last_versions:
select_related_last_versions(res)
return res
def for_herd(self, herd, last_versions=False):
"""
Returns packages that belong to the given herd
"""
res = self.filter(herds__id=herd.id)
if last_versions:
select_related_last_versions(res)
return res
def for_category(self, category, last_versions=False):
"""
Returns packages that belong to the given category
"""
res = self.filter(category=category)
if last_versions:
select_related_last_versions(res)
return res
for_maintainer = gen_for_function('maintainers')
for_herd = gen_for_function('herds')
for_category = gen_for_function('category')
class PackageQuerySet(models.query.QuerySet, PackageMixin):