def getMaKaCInfoInstance(cls):
dbmgr = DBMgr.getInstance()
root = dbmgr.getDBConnection().root()
try:
minfo = root["MaKaCInfo"]["main"]
except KeyError, e:
minfo = MaKaCInfo()
root["MaKaCInfo"] = OOBTree.OOBTree()
root["MaKaCInfo"]["main"] = minfo
def getMaKaCInfoInstance(cls):
dbmgr = DBMgr.getInstance()
root = dbmgr.getDBConnection().root()
try:
minfo = root["MaKaCInfo"]["main"]
except KeyError, e:
minfo = MaKaCInfo()
root["MaKaCInfo"] = OOBTree.OOBTree()
root["MaKaCInfo"]["main"] = minfo
def _setIdx( self ):
if self.idxClass == None:
raise Exception( _("index class not set (%s)")%self.__class__.__name__)
shelf = DBMgr.getInstance().getDBConnection()
#XXX: calling this provokes a modification on the shelf which produces
# read conflicts
#self._idx = shelf.create_catalog( self.idxClass )
if shelf.has_catalog( self.idxClass ):
self._idx = shelf.get_catalog( self.idxClass )
else:
self._idx = shelf.create_catalog( self.idxClass )
def _getTree(self, name):
"""Returns a OOBTree object stored in the DB root under the key "name".
If the key doesn't exist if creates a new tree and inserts it into the
DB root.
BTree objects act as a dictionary but due to their data structure
properties allow to increase the concurrency (don't need to load all
the mapping on memory) and improves performance.
Params:
name -- key value of the requested tree
"""
root = DBMgr.getInstance().getDBConnection().root()
name = name.strip().lower()
if not (name in self.__allowedIdxs):
raise Exception(_("index name not allowed %s") % name)
if not root.has_key(name):
root[name] = OOBTree.OOBTree()
return root[name]
def _getTree(self, name):
"""Returns a OOBTree object stored in the DB root under the key "name".
If the key doesn't exist if creates a new tree and inserts it into the
DB root.
BTree objects act as a dictionary but due to their data structure
properties allow to increase the concurrency (don't need to load all
the mapping on memory) and improves performance.
Params:
name -- key value of the requested tree
"""
root = DBMgr.getInstance().getDBConnection().root()
name = name.lower()
if not (name in self.__allowedIdxs):
raise Exception( _("index name not allowed %s")%name)
if not root.has_key( name ):
root[ name ] = OOBTree.OOBTree()
return root[ name ]
