[IMP] intrastat_product: prepopulate stored computed fields

intrastat_product/__init__.py

@@ -1,3 +1,4 @@
 from . import models
 from . import report
 from . import wizards
+from .hooks import pre_init_hook

intrastat_product/__manifest__.py

@@ -41,4 +41,5 @@
     ],
     "demo": ["demo/intrastat_demo.xml"],
     "installable": True,
+    "pre_init_hook": "pre_init_hook",
 }

intrastat_product/hooks.py

@@ -0,0 +1,35 @@
+# Copyright 2022 Stefan Rijnhart <stefan@opener.amsterdam>
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+import logging
+
+
+def pre_init_hook(cr):
+    """Prepopulate stored computed fields for faster installation"""
+    logger = logging.getLogger(__name__)
+    logger.info("Prepopulating stored computed fields")
+    cr.execute(
+        """
+        alter table account_move
+        add column if not exists src_dest_country_id integer;
+        """
+    )
+    cr.execute(
+        """
+        with countries as (
+            select am.id as move_id,
+            coalesce(
+                rps.country_id,
+                rp.country_id,
+                rpc.country_id
+            ) as country_id
+            from account_move am
+            left join res_partner rps on rps.id = am.partner_shipping_id
+            join res_partner rp on rp.id = am.partner_id
+            join res_company rc on rc.id = am.company_id
+            join res_partner rpc on rpc.id = rc.partner_id
+        )
+        update account_move am
+        set src_dest_country_id = countries.country_id
+        from countries where am.id = countries.move_id;
+        """
+    )