Deleted entity not removed from EntityCache

 

I have a scenario which looks like this:

 

Entity A contains a List of Entity B's

 

Fx. Entity A1 has relations to B1, B2 and B3

 

Now let us say two users are using the application.

 

User1 deletes Entity B2

User1 adds Entity B4

 

What user1 now sees is Entity A1 having relations to B1, B3 and B4

 

User2 makes a query the Database for all entities, and user2 now sees the new entity B4, but he also still sees the entity B2 since this entitiy is still in the entitycache.

 

Hope my example explains my problem. Basically I do not see how the entities cached can ever be deleted from the cache if they are deleted by another user - even if a reload of all the entities are made

 

How do I work around this problem?

 

Best regards,

Rasmus

 

Thank you for your reply. But it seems to me that not QueryStrategy or MergeStrategy can solve the problem. The way I see it:

 

- if two users are using the system and both have loaded the samme entities to the cache

- user1 adds, updated or deletes entities and commits the changes

- no matter what QueryStrategy or MergeStrategy is made from user2 in subsequent queries - the user2 will see:

- The entities added by user1 (which is good)

- The updates to the entities updated by user1 (which is good)

- But entities deleted from user1 will never be removed from the cache of user2 not matter what subsequent queries are made (not matter the QueryStrategy og MergeStrategy used). Unless the enitycache of user2 is explicitly cleared and entities reloaded.

 

Is this a correct observation that deleted entities is a "special" case, and no query made will ever remove entities from a cache, only add or update?

 

Looking forward to your answer

 

Best regards,

 

Rasmus