def __init__(self, path):
self.store = os.path.join(path, 'objects')
if not os.path.isdir(self.store):
raise InvalidStore("objects is not a directory")
db = os.path.join(path, 'database')
if not os.path.isfile(db):
raise InvalidStore("database is not a file")
self.metadata = MetadataStore(db)
