Some more ideas where BPM is heading to

git-svn-id: https://svn.erp5.org/repos/public/erp5/sandbox/amount_generator@35585 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessPath.py

@@ -34,42 +34,12 @@ from AccessControl import ClassSecurityInfo
 from Products.ERP5Type import Permissions, PropertySheet, interfaces
 from Products.ERP5.Document.Path import Path
 from Products.ERP5.Document.Predicate import Predicate
+from Products.ERP5.ExplanationCache import _getExplanationCache
 
 import zope.interface
 
 from zLOG import LOG
 
-class ExplanationCache:
-  """ExplanationCache provides a central access to 
-  all parameters and values which are needed to process 
-  an explanation. It is based on the idea that a value is calculated
-  once and once only, as a way to accelerate performance of algorithms
-  related to an explanation.
-
-        'explanation_uid': self._getExplanationUidList(explanation) # XXX-JPS why do we need explanation_uid ? and why a list
-        'simulation_path': simulation_path,
-
-    explanation_uid = self._getExplanationUidList(explanation) # A hint value to reduce the size of the tree
-    simulation_path = '/erp5/p.../%' # A list of path
-
-"""
-  def __init__(self, explanation):
-    """
-    """
-    self.explanation = explanation
-
-  def getRootExplanationUidList(self):
-    """
-    """
-
-  def getSimulationPathPatternList(self):
-    """
-    """
-
-def _getExplanationCache(explanation):
-  # XXX-JPS Cache this in a transaction variable or better
-  return ExplanationCache(explanation)
-
 class BusinessPath(Path, Predicate):
   """
     The BusinessPath class embeds all information related to
@@ -175,6 +145,12 @@ class BusinessPath(Path, Predicate):
             #'destination_transport'
             )
 
+  # Helper Methods
+  def _getExplanationRelatedSimulationMovementValueList(self, explanation):
+    explanation_cache = _getExplanationCache(explanation)
+    return explanation_cache.getBusinessPathRelatedSimulationMovementValueList(self)
+
+  # XXX-JPS UNkonwn ?
   security.declareProtected(Permissions.AccessContentsInformation,
                             'getArrowCategoryDict')
   def getArrowCategoryDict(self, context=None, **kw): # XXX-JPS do we need it in API ?
@@ -271,6 +247,22 @@ class BusinessPath(Path, Predicate):
     method_id = self.getCompletionDateMethodId()
     method = getattr(movement, method_id) # We wish to raise if it does not exist
     return method()
+
+  def getCompletionDate(self, explanation):
+    """Returns the date of completion of the movemnet 
+    based on paremeters of the business path. This complete date can be
+    the start date, the stop date, the date of a given workflow transition
+    on the explaining delivery, etc.
+
+    XXX - DOC
+
+    movement -- a Simulation Movement
+    """
+    date_list = []
+    for movement in self._getExplanationRelatedSimulationMovementValueList(explanation):
+      date_list.append(self.getMovementCompletionDate(movement))
+
+    return max(date_list)
   
   security.declareProtected(Permissions.AccessContentsInformation,
                                             'getExpectedQuantity')
@@ -363,6 +355,15 @@ class BusinessPath(Path, Predicate):
         return False
     return True
 
+  def isDelivered(self, explanation):
+    """XXX
+    """
+    for simulation_movement in self._getExplanationRelatedSimulationMovementValueList(
+        explanation):
+      if not simulation_movement.getDelivery():
+        return False
+    return True
+
   def build(self, explanation):
     """Builds all related movements in the simulation using the builders
     defined on the Business Path.

product/ERP5/ExplanationCache.py

@@ -51,12 +51,12 @@ class ExplanationCache:
     """
     # Define share properties
     self.explanation = explanation
-    self.portal_catalog = getToolByName(explanation 'portal_catalog')
+    self.portal_catalog = getToolByName(explanation, 'portal_catalog')
     self.simulation_movement_cache = {} # Simulation Movement Cache
     self.explanation_uid_cache = []
     self.explanation_path_pattern_cache = []
 
-  def getDeliveryMovementList(self):
+  def _getDeliveryMovementList(self):
     """Returns self is explanation is a delivery line
     of the list of explanation delivery lines if explanation
     is a delivery
@@ -80,7 +80,7 @@ class ExplanationCache:
       return self.explanation_uid_cache
     result = set()
     # For each delivery movement
-    for movement in self.getDeliveryMovementList():
+    for movement in self._getDeliveryMovementList():
       # For each simulation movement
       for simulation_movement in movement.getDeliveryRelatedValueList():
         result.add(simulation_movement.getExplanationUid()) # XXX-JPS use new API later
@@ -117,7 +117,7 @@ class ExplanationCache:
         local_path_dict[simulation_movement_id] = simulation_movement
 
     # For each delivery movement
-    for movement in self.getDeliveryMovementList():
+    for movement in self._getDeliveryMovementList():
       # For each simulation movement
       for simulation_movement in movement.getDeliveryRelatedValueList():
         updatePathDict(simulation_movement)
@@ -133,7 +133,7 @@ class ExplanationCache:
         else:
           browsePathDict('%s/%s' % (prefix, key), value) # Recursing with string append is slow XXX-JPS
 
-    browsePathDict('', path_dict)
+    browsePathDict('/', path_dict)
     self.explanation_path_pattern_cache = result
     return result
 
@@ -143,7 +143,7 @@ class ExplanationCache:
     """
     return self.getSimulationMovementList(causality_uid=business_path.getUid())
     
-  def getSimulationMovementList(self, **kw)
+  def getSimulationMovementList(self, **kw):
     """Search Simulation Movements related to our explanation.
     Cache result so that the second time we saarch for the same
     list we need not involve the catalog again.
@@ -157,9 +157,48 @@ class ExplanationCache:
                                **kw)
     return self.simulation_movement_cache[kw_tuple]
 
+  def geBusinessPathClosure(business_path):
+    """Creates a Business Process by filtering out all Business Path
+    in self which are not related to a simulation movement
+    which is either or parent or a child of explanation simulations movements
+    caused by 'business_path'
+
+    cache keys: business_path (simple) then path_set
+
+    XXX-JPS PSEUDO CODE
+    """
+    new_business_process = BusinessProcess()
+    accepted_path = []
+    
+    explanation_cache = _getExplanationCache(explanation)
+    path_list = explanation_cache.getSimulationPathPatternList()
+    path_list = map(lambda x:x[0:-1], path_list) # Remove trailing %
+    path_set = set()
+    for simulation_movement in business_path.\
+             _getExplanationRelatedSimulationMovementValueList(explanation):
+      simulation_path = simulation_movement.getPath()
+      for path in path_list:
+        if simulation_path.startswith(path):
+          path_set.add(path) # This selection path is part of explanation
+
+    for business_path in self.getBusinessPathValueList():
+      if business_path.hasMovementsIn(explanation, path_set):
+        accepted_path.append(business_path)
+
+    new_business_process.addValueList(business_path)
+    return new_business_process
+
 def _getExplanationCache(explanation):
+  if explanation.isinstance(ExplanationCache):
+    return explanation
   # Return cached value if any
   tv = getTransactionalVariable(explanation)
   if tv.get('explanation_cache', None) is None:
     tv['explanation_cache'] =  ExplanationCache(explanation)
   return tv.get('explanation_cache')
+
+def _getBusinessPathClosure(explanation, business_path):
+  """Returns a 
+  """
+  explanation_cache = _getExplanationCache(explanation)
+  return explanation_cache.getBusinessPathClosure(business_path)

product/ERP5/interfaces/business_path.py

@@ -59,6 +59,15 @@ class IBusinessPath(Interface):
     movement -- a Simulation Movement
     """
   
+  def getCompletionDate(explanation):
+    """Returns the date of completion of the movemnet 
+    based on paremeters of the business path. This completion date can be
+    the start date, the stop date, the date of a given workflow transition
+    on the explaining delivery, etc.
+
+    XXXXXXXXXXXXXXXx
+    """
+
   def getExpectedQuantity(amount):
     """Returns the new quantity for the provided amount taking
     into account the efficiency or the quantity defined on the business path.
@@ -116,6 +125,10 @@ class IBusinessPath(Interface):
     not yet completed (ex. in 'delivered' state).
     """
 
+  def isDelivered(explanation):
+    """XXX
+    """
+
   def build(explanation):
     """Builds all related movements in the simulation using the builders
     defined on the Business Path

product/ERP5/interfaces/business_process.py

@@ -231,7 +231,7 @@ class ITradeStateProcess(Interface):
                    implicitely defines a simulation subtree
     """
 
-  def getLatestPartiallyCompletedTradeState(explanation):
+  def getLatestPartiallyCompletedTradeStateList(explanation):
     """Returns the list of completed trade states which predecessor
     states are completed and for which no successor state 
     is partially completed in the context of given explanation.