diff options
Diffstat (limited to 'git/db/py/ref.py')
| -rw-r--r-- | git/db/py/ref.py | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/git/db/py/ref.py b/git/db/py/ref.py index 75bc4fd1..3552f2a3 100644 --- a/git/db/py/ref.py +++ b/git/db/py/ref.py @@ -7,18 +7,20 @@ from base import PureCompoundDB import os __all__ = ('PureReferenceDB', ) + class PureReferenceDB(PureCompoundDB): + """A database consisting of database referred to in a file""" - + # Configuration # Specifies the object database to use for the paths found in the alternates # file. If None, it defaults to the PureGitODB ObjectDBCls = None - + def __init__(self, ref_file): super(PureReferenceDB, self).__init__() self._ref_file = ref_file - + def _set_cache_(self, attr): if attr == '_dbs': self._dbs = list() @@ -26,7 +28,7 @@ class PureReferenceDB(PureCompoundDB): else: super(PureReferenceDB, self)._set_cache_(attr) # END handle attrs - + def _update_dbs_from_ref_file(self): dbcls = self.ObjectDBCls if dbcls is None: @@ -34,7 +36,7 @@ class PureReferenceDB(PureCompoundDB): import complex dbcls = complex.PureGitODB # END get db type - + # try to get as many as possible, don't fail if some are unavailable ref_paths = list() try: @@ -42,10 +44,10 @@ class PureReferenceDB(PureCompoundDB): except (OSError, IOError): pass # END handle alternates - + ref_paths_set = set(ref_paths) cur_ref_paths_set = set(db.root_path() for db in self._dbs) - + # remove existing for path in (cur_ref_paths_set - ref_paths_set): for i, db in enumerate(self._dbs[:]): @@ -54,7 +56,7 @@ class PureReferenceDB(PureCompoundDB): continue # END del matching db # END for each path to remove - + # add new # sort them to maintain order added_paths = sorted(ref_paths_set - cur_ref_paths_set, key=lambda p: ref_paths.index(p)) @@ -70,7 +72,7 @@ class PureReferenceDB(PureCompoundDB): # ignore invalid paths or issues pass # END for each path to add - + def update_cache(self, force=False): # re-read alternates and update databases self._update_dbs_from_ref_file() |