From 02c0dbc482fc6037c19e713f4645d627eb004e9c Mon Sep 17 00:00:00 2001 From: Dan McGee Date: Tue, 9 Aug 2011 23:33:27 -0500 Subject: Add some methods to PackageDepend object This will allow for some future "find the best provider link" stuff as well as refactoring of the get_depends() method on Package. Signed-off-by: Dan McGee --- main/models.py | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) diff --git a/main/models.py b/main/models.py index 7037282..4897cb6 100644 --- a/main/models.py +++ b/main/models.py @@ -386,6 +386,64 @@ class PackageDepend(models.Model): optional = models.BooleanField(default=False) description = models.TextField(null=True, blank=True) + def get_best_satisfier(self, arches=None, testing=None, staging=None): + '''Find a satisfier for this dependency that best matches the given + criteria. It will not search provisions, but will find packages named + and matching repo characteristics if possible.''' + pkgs = Package.objects.normal().filter(pkgname=self.depname) + if arches is not None: + # make sure we match architectures if possible + pkgs = pkgs.filter(arch__in=arches) + if len(pkgs) == 0: + # couldn't find a package in the DB + # it should be a virtual depend (or a removed package) + return None + if len(pkgs) == 1: + return pkgs[0] + # more than one package, see if we can't shrink it down + # grab the first though in case we fail + pkg = pkgs[0] + # prevents yet more DB queries, these lists should be short; + # after each grab the best available in case we remove all entries + if staging is not None: + pkgs = [p for p in pkgs if p.repo.staging == staging] + if len(pkgs) > 0: + pkg = pkgs[0] + + if testing is not None: + pkgs = [p for p in pkgs if p.repo.testing == testing] + if len(pkgs) > 0: + pkg = pkgs[0] + + return pkg + + def get_providers(self, arches=None, testing=None, staging=None): + '''Return providers of this dep. Does *not* include exact matches as it + checks the Provision names only, use get_best_satisfier() instead.''' + pkgs = Package.objects.normal().filter( + provides__name=self.depname).distinct() + if arches is not None: + pkgs = pkgs.filter(arch__in=arches) + + # Logic here is to filter out packages that are in multiple repos if + # they are not requested. For example, if testing is False, only show a + # testing package if it doesn't exist in a non-testing repo. + if staging is not None: + filtered = {} + for p in pkgs: + if p.pkgname not in filtered or p.repo.staging == staging: + filtered[p.pkgname] = p + pkgs = filtered.values() + + if testing is not None: + filtered = {} + for p in pkgs: + if p.pkgname not in filtered or p.repo.testing == testing: + filtered[p.pkgname] = p + pkgs = filtered.values() + + return pkgs + def __unicode__(self): return "%s%s" % (self.depname, self.depvcmp) -- cgit v1.2.3-24-g4f1b