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= PocketChroot =
PocketChroot records combine DistroArchSeries and a Chroot.
Chroot are identified per LibraryFileAlias and we offer three method
based on IDistroArchSeries to handle them: get, add and update.
>>> from lp.services.librarian.interfaces import ILibraryFileAliasSet
>>> from lp.registry.interfaces.distribution import IDistributionSet
>>> from lp.registry.interfaces.pocket import PackagePublishingPocket
Grab a distroarchseries:
>>> ubuntu = getUtility(IDistributionSet)['ubuntu']
>>> hoary = ubuntu['hoary']
>>> hoary_i386 = hoary['i386']
Grab some files to be used as Chroots (it doesn't really matter what
they are, they simply need to be provide ILFA interface):
>>> chroot1 = getUtility(ILibraryFileAliasSet)[1]
>>> chroot2 = getUtility(ILibraryFileAliasSet)[2]
Check if getPocketChroot returns None for unknown chroots:
>>> p_chroot = hoary_i386.getPocketChroot()
>>> print p_chroot
None
Check if getChroot returns the 'default' argument on not found chroots:
>>> hoary_i386.getChroot(default='duuuuh')
'duuuuh'
Invoke addOrUpdateChroot for missing chroot, so it will insert a new
record in PocketChroot:
>>> p_chroot = hoary_i386.addOrUpdateChroot(chroot=chroot1)
>>> print p_chroot.id
1
>>> print p_chroot.distroarchseries.architecturetag
i386
>>> print p_chroot.chroot.id,
1
Invoke addOrUpdateChroot on an existing PocketChroot, it will update
the chroot:
>>> p_chroot = hoary_i386.addOrUpdateChroot(chroot=chroot2)
>>> print p_chroot.id
1
>>> print p_chroot.distroarchseries.architecturetag
i386
>>> print p_chroot.chroot.id,
2
Ensure chroot was updated by retriving it from DB again:
>>> hoary_i386.getPocketChroot().chroot.id
2
Check if getChroot returns the correspondent Chroot LFA instance for
valid chroots.
>>> chroot = hoary_i386.getChroot()
>>> chroot.id
2
Force transaction commit in order to test DB constraints:
>>> import transaction
>>> transaction.commit()
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