def get_data_cache(self, recreate_cache_if_needed=True):
"""Return always up-to-date data from cache.
The returned value depends on the what has been stored with
:meth:`~SearchService.prepare_data_cache`.
:param recreate_cache_if_needed: if True, force refreshing data cache.
"""
try:
self.__class__.cache.is_ok_p
except Exception:
self.__class__.cache = DataCacher(self.prepare_data_cache,
self.timestamp_verifier)
if recreate_cache_if_needed:
self.__class__.cache.recreate_cache_if_needed()
return self.__class__.cache.cache
