From e62b73122c091d2bf4d1716156524ee7bf91465e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Sun, 3 Jul 2011 13:19:10 +0200
Subject: [PATCH] Change Pool into a Singleton

---
 invoice.py  | 7 ++++---
 purchase.py | 6 ++++--
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/invoice.py b/invoice.py
index 3d90a0d964..6a6c287ce9 100644
--- a/invoice.py
+++ b/invoice.py
@@ -2,14 +2,15 @@
 #of this repository contains the full copyright notices and license terms.
 from trytond.model import ModelView, ModelSQL, fields
 from trytond.transaction import Transaction
+from trytond.pool import Pool
 
 
 class Invoice(ModelSQL, ModelView):
     _name = 'account.invoice'
 
     def write(self, ids, vals):
-        invoice_line_obj = self.pool.get('account.invoice.line')
-        purchase_obj = self.pool.get('purchase.purchase')
+        invoice_line_obj = Pool().get('account.invoice.line')
+        purchase_obj = Pool().get('purchase.purchase')
         res = super(Invoice, self).write(ids, vals)
         if 'state' in vals and vals['state'] in ('paid', 'cancel'):
             if isinstance(ids, (int, long)):
@@ -36,7 +37,7 @@ class InvoiceLine(ModelSQL, ModelView):
             })
 
     def write(self, ids, vals):
-        purchase_obj = self.pool.get('purchase.purchase')
+        purchase_obj = Pool().get('purchase.purchase')
 
         if 'invoice' in vals:
             if isinstance(ids, (int, long)):
diff --git a/purchase.py b/purchase.py
index 52fdd038c0..573fe4e86e 100644
--- a/purchase.py
+++ b/purchase.py
@@ -3,6 +3,8 @@
 from __future__ import with_statement
 from trytond.model import ModelView, ModelSQL, fields
 from trytond.transaction import Transaction
+from trytond.pool import Pool
+
 
 class Purchase(ModelSQL, ModelView):
     _name = 'purchase.purchase'
@@ -24,8 +26,8 @@ class Purchase(ModelSQL, ModelView):
         super(Purchase, self).init(module_name)
 
     def create_invoice(self, purchase_id):
-        invoice_obj = self.pool.get('account.invoice')
-        invoice_line_obj = self.pool.get('account.invoice.line')
+        invoice_obj = Pool().get('account.invoice')
+        invoice_line_obj = Pool().get('account.invoice.line')
 
         res = super(Purchase, self).create_invoice(purchase_id)