diff options
Diffstat (limited to 'examples/beaker_caching/caching_query.py')
| -rw-r--r-- | examples/beaker_caching/caching_query.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/examples/beaker_caching/caching_query.py b/examples/beaker_caching/caching_query.py index 0b2238282..a94eea6ac 100644 --- a/examples/beaker_caching/caching_query.py +++ b/examples/beaker_caching/caching_query.py @@ -62,6 +62,14 @@ class CachingQuery(Query): """override __iter__ to pull results from Beaker if particular attributes have been configured. + Note that this approach does *not* detach the loaded objects from + the current session. If the cache backend is an in-process cache + (like "memory") and lives beyond the scope of the current session's + transaction, those objects may be expired. The method here can be + modified to first expunge() each loaded item from the current + session before returning the list of items, so that the items + in the cache are not the same ones in the current Session. + """ if hasattr(self, '_cache_parameters'): return self.get_value(createfunc=lambda: list(Query.__iter__(self))) |