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  • Committer: Jelmer Vernooij
  • Date: 2011-12-19 10:58:39 UTC
  • mfrom: (6383 +trunk)
  • mto: This revision was merged to the branch mainline in revision 6386.
  • Revision ID: jelmer@canonical.com-20111219105839-uji05ck4rkm1mj4j
Merge bzr.dev.

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bzrlib/inter.py
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from __future__ import absolute_import
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"""Inter-object utility class."""
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from bzrlib.errors import NoCompatibleInter
 
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class InterObject(object):
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    """This class represents operations taking place between two objects.
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                       the InterObject instance.
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        :param target: the object to be the 'target' member of
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                       the InterObject instance.
 
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        If an optimised worker exists it will be used otherwise
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        a default Inter worker instance will be created.
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        """
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        for provider in reversed(klass._optimisers):
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            if provider.is_compatible(source, target):
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                return provider(source, target)
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        return klass(source, target)
 
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        raise NoCompatibleInter(source, target)
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    def lock_read(self):
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        """Take out a logical read lock.