Raphael Collet a07a076c45 [FIX] models: avoid prefetch hell when reading fields
The method `read()` may be very slow when reading relational fields and
computed fields, because the computed fields can be computed on a recordset
that is larger than expected.

The issue occurs on model 'res.partner' when reading fields 'child_ids' and
'purchase_order_count', for instance.  Suppose we read those two fields on a
partner with 1000 contacts.  First, the one2many field is read from the
database and stored to the cache; the latter adds the value ids to the
prefetching of 'res.partner'.  Then, the fields are fetched from the cache.
When 'purchase_order_count' is accessed on the partner, the field is computed
on all its children as well...

closes odoo/odoo#29867
2019-01-03 12:45:48 +00:00
2017-06-23 16:34:23 +02:00
2015-09-08 15:45:09 +02:00
2016-12-19 14:19:26 +01:00
2015-09-08 17:58:38 +02:00

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Odoo

Odoo is a suite of web based open source business apps.

The main Odoo Apps include an Open Source CRM, Website Builder, eCommerce, Warehouse Management, Project Management, Billing & Accounting, Point of Sale, Human Resources, Marketing, Manufacturing, Purchase Management, ...

Odoo Apps can be used as stand-alone applications, but they also integrate seamlessly so you get a full-featured Open Source ERP when you install several Apps.

Getting started with Odoo

For a standard installation please follow the Setup instructions from the documentation.

If you are a developer you may type the following command at your terminal:

wget -O- https://raw.githubusercontent.com/odoo/odoo/10.0/setup/setup_dev.py | python

Then follow the developer tutorials

For Odoo employees

To add the odoo-dev remote use this command:

$ ./setup/setup_dev.py setup_git_dev

To fetch odoo merge pull requests refs use this command:

$ ./setup/setup_dev.py setup_git_review
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