[IMP] mail: remove cache invalidation when notifying a message with a parent

When notifying partners or channels of a message, a cache invalidation is
currently done if the message has a parent. This invalidation has been done
when migrating the mail module at the new API at 4b122ad41d873febe288ab1f8c6cdc078ca2a479.

In that time notifying people of a message lead to the creation of
notifications of the parent message, if any. It was due to the chatter
being threaded and therefore displaying message with their header message.
Adding notifications for the parent was necessary to avoid access rights
issues  when fetching parent message data. Indeed as being notified is one
of the rule to see a message record adding notifications was done. A cache
invalidation has therefore been added to clean the message cache and ensure
everything was fine.

Commit 88b8cd058713bfad2942f7e7434c34b6c1a6e7da changed the way notifications are modeled in Odoo.
Notification on parent message was removed and access rights changed. Threaded
mode for Chatter has also been removed. However cache invalidation has been
kept probably by fear of removing it.

It does not seem to have any viable reason to invalidate cache when a message
has a parent. Posting a message does not push other messages in users's Inbox
meaning there should not be any issue with the cache preventing to see
messages.

Removing this cache invalidation allow to gain queries in performance tests.
It has an impact on each process involving message creation which is quite
common in Odoo.

0 files changed, 0 insertions, 0 deletions