stock_removal_location_by_priority: Add init_hook to speed up installation

stock_removal_location_by_priority/__init__.py

@@ -4,3 +4,4 @@
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
 
 from . import models
+from .init_hook import pre_init_hook

stock_removal_location_by_priority/__openerp__.py

@@ -16,4 +16,5 @@
     "license": "AGPL-3",
     'installable': True,
     'application': False,
+    'pre_init_hook': 'pre_init_hook',
 }

stock_removal_location_by_priority/init_hook.py

@@ -0,0 +1,37 @@
+# -*- coding: utf-8 -*-
+# Copyright 2017 Eficent Business and IT Consulting Services, S.L.
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+def pre_init_hook(cr):
+    """
+    The objective of this hook is to speed up the installation
+    of the module on an existing Odoo instance.
+
+    Without this script, big databases can take a long time to install this
+    module.
+    """
+    set_stock_location_removal_priority_default(cr)
+    set_stock_quant_removal_priority_default(cr)
+
+
+def set_stock_location_removal_priority_default(cr):
+    cr.execute(
+        """
+        ALTER TABLE stock_location
+        ADD COLUMN removal_priority integer
+        DEFAULT 10;
+        """)
+
+
+def set_stock_quant_removal_priority_default(cr):
+    cr.execute(
+        """
+        ALTER TABLE stock_quant
+        ADD COLUMN removal_priority integer
+        DEFAULT 10;
+        """)