Hi guys.
I got this code example:
https://gist.github.com/aCLr/ff9462b634031ee6bccbead8d913c41f.
Here I make custom `Session` and custom `Query`. As you see, `Session` has
several binds.
Also, you can see that there are two functions:
`assert_got_correct_objects_with_remove` and
`assert_got_cached_objects_without_remove`.
The first checks that we got correct results if `Session.remove` called.
The second checks, that we got incorrect results if `Session.remove` not
called.
I understand, that behavior is correct: we don't remove session - so, we
got same result from "cache-like"
`sqlalchemy.orm.loading._instance_processor.session_identity_map`.
I want to avoid that mechanism and don't want to use `session_identity_map`
for different binds. In ideal, bind should be used as part of key for
`session_identity_map`, but I guess, that it is not possible.
Another way, acceptable for me: disable this mechanism. But I do not found
ways to achieve this.
And the third option: construct instances manually. Looks like I should
copy code from `loading` module and add that method to `CustomSession`:
def instances(self, cursor, __context=None):
context = __context
if context is None:
context = QueryContext(self)
return self._custom_instances(self, cursor, context)
def custom_instances(query, cursor, context):
"""copied from `loading.instances` code with disabled
`session_identity_map`"""
The third way is the most ugly and I want to avoid it.
Could you help me with my hard choice and, maybe, suggest any other ways
and options? :)
Thank you.
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