Based on feedback, here is the revised proposal.
1. Change package.release from a ForeignKey to a ManyToMany relationship
with
release. A spec can, through another spec file, specify more than one
module.
A release has a 1-1 relationship with a module. This means that a
package can
point to more than one release - as long as their modules are different.
2. Add a table
class IPS_package_file(models.Model):
filename = models.CharField(max_length=1024)
location = models.CharField(max_length=4096)
There will be one entry for each file in this table. The combination of
location + filename will be unique. We cannot have the same file twice.
This
will basically be a copy of the contents of all of the repos we are
interested
in.
3. Add ManyToMany relationship between package and IPS_package_file:
class package(models.Model):
...
files = models.ManyToMany(IPS_package_file)
A package contains multiple files.
4. Add a function to the package class that returns the parent spec.
package.parent_spec().
5. Add a function to the package class that returns True|False for a package
containing a file, package.has_file(path).
6. Add a way to sort the packages by fmri.
7. We need to store a list of repos we know about in the DB.
class IPS_repo(models.Model):
URL = models.CharField(max_length=4096)
After building the package, we do the following (this is rough, there
are errors):
# update our representation of what's in the repos, including /dev,
/release,
# etc.
for repo in repo.objects.all():
for package in repo.get_packages():
if not package in IPS_repo_package.objects.all():
# package is new
for file in package.contents():
new_file = IPS_repo_file(.....)
new_file.save()
# check for file conflicts
for some_file in new package's manifest:
packages_containing_some_file = package.objects.filter(...)
if packages_containing_some_file.count() > 0:
for p in packages_containing_some_file:
if p.parent_spec() != new package's spec file:
# Maybe we're moving this file from one spec to another
# Make sure the newest version of p, does *not* contain some_file
if
package.objects.filter(name=p.name).sort_by(fmri)[0].has_file(some_file):
# COLISSION!
