[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, 3 insertions, 1 deletions

diff --git a/addons/product_expiry/models/production_lot.py b/addons/product_expiry/models/production_lot.py
index 7855f0eee05..566483eb1a1 100644
--- a/addons/product_expiry/models/production_lot.py
+++ b/addons/product_expiry/models/production_lot.py
@@ -21,8 +21,10 @@ class StockProductionLot(models.Model):
     @api.depends('alert_date')
     def _compute_product_expiry_alert(self):
         current_date = fields.Datetime.now()
-        for lot in self.filtered(lambda l: l.alert_date):
+        lots = self.filtered(lambda l: l.alert_date)
+        for lot in lots:
             lot.product_expiry_alert = lot.alert_date <= current_date
+        (self - lots).product_expiry_alert = False
 
     def _get_dates(self, product_id=None):
         """Returns dates based on number of days configured in current lot's product."""