[IMP] models: ORM speedup

This branch is the combination of several optimizations in the ORM:

* store field values once in the cache: the cache reflects more
faithfully the database, only fields that explicitly depend on the
context have an extra indirection in the cache;

* delay recomputations by default: use method `recompute` to explicitly
flush out pending recomputations;

* delay updates in method `write`: updates are stored in a data
structure that can be flushed efficiently to the database with method
`flush` (which also flush out recomputations);

* make method `modified` take advantage of inverse fields to inverse
dependencies;

* filter records by evaluating a domain on records in Python;

* a computed field with `readonly=False` behaves like a normal field
with an onchange method;

* computed fields are computed in superuser mode by default.

Work done by Toufik Ben Jaa, Raphael Collet, Denis Ledoux and Fabien
Pinckaers.

closes odoo/odoo#35659

Signed-off-by: Denis Ledoux <beledouxdenis@users.noreply.github.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/addons/link_tracker/models/utm.py b/addons/link_tracker/models/utm.py
index 537993988c0..71c94ba4eb6 100644
--- a/addons/link_tracker/models/utm.py
+++ b/addons/link_tracker/models/utm.py
@@ -14,7 +14,8 @@ class UtmCampaign(models.Model):
 
     def _compute_items_total(self):
         """Empty method that will be implemented by inheriting classes"""
-        return
+        self.clicked_total = False
+        self.items_total = False
 
     @api.depends('items_total', 'clicked_total')
     def _compute_clicks_ratio(self):