+ def dbsession(self):
+ if self._dbsession is None:
+ self._dbsession=alchemy.session()
+ return self._dbsession
+
+ def close_dbsession(self):
+ if self._dbsession is None: return
+ alchemy.close_session(self._dbsession)
+ self._dbsession=None
+
+ def getCredential(self, minimumExpiration=0):