[Erp5-report] r15837 - /erp5/trunk/products/ERP5/Document/OrderLine.py

[nobody at svn.erp5.org]

Author: jp
Date: Mon Aug 27 15:13:27 2007
New Revision: 15837

URL: http://svn.erp5.org?rev=15837&view=rev
Log:
Initial implementation of hierarchical orders.

Modified:
    erp5/trunk/products/ERP5/Document/OrderLine.py

Modified: erp5/trunk/products/ERP5/Document/OrderLine.py
URL: http://svn.erp5.org/erp5/trunk/products/ERP5/Document/OrderLine.py?rev=15837&r1=15836&r2=15837&view=diff
==============================================================================
--- erp5/trunk/products/ERP5/Document/OrderLine.py (original)
+++ erp5/trunk/products/ERP5/Document/OrderLine.py Mon Aug 27 15:13:27 2007
@@ -30,8 +30,11 @@
 from AccessControl import ClassSecurityInfo
 
 from Products.ERP5Type import Permissions, PropertySheet, Constraint, Interface
+from Products.ERP5Type.TransactionalVariable import getTransactionalVariable
 from Products.ERP5.Document.DeliveryLine import DeliveryLine
 from Products.ERP5.Document.Movement import Movement
+
+from zLOG import LOG
 
 class OrderLine(DeliveryLine):
     """
@@ -61,6 +64,22 @@
 
     # Declarative interfaces
     __implements__ = ( Interface.Variated, )
+
+    security.declareProtected(Permissions.AccessContentsInformation,
+                              'hasLineContent')
+    def hasLineContent(self):
+      """Return true if the object contains lines.
+         We cache results in a volatile variable.
+      """
+      acquisition_key = ('hasLineContent', self.getPath())
+      transactional_variable = getTransactionalVariable(acquisition_key)
+      try:
+        result = transactional_variable['hasLineContent']
+      except KeyError:
+        result = (len(self.contentValues(meta_type=self.meta_type)) > 0)
+        transactional_variable['hasLineContent'] = result
+      LOG('hasLineContent', 0, '%s %s' % (acquisition_key, result))
+      return result
 
     def applyToOrderLineRelatedMovement(self, portal_type='Simulation Movement', 
                                         method_id = 'expand'):