r6767 - in trunk: gnue-common/src/datasources gnue-common/src/datasources/drivers/appserver/appserver gnue-forms/src/GFObjects

[johannes]

Author: johannes
Date: 2004-12-01 01:59:09 -0600 (Wed, 01 Dec 2004)
New Revision: 6767

Modified:
   trunk/gnue-common/src/datasources/GDataSource.py
   trunk/gnue-common/src/datasources/drivers/appserver/appserver/RecordSet.py
   trunk/gnue-forms/src/GFObjects/GFBlock.py
Log:
Added an 'update' function to GFBlock which updates the current record set of 
the datasource (an thus updating all calculated fields)


Modified: trunk/gnue-common/src/datasources/GDataSource.py
===================================================================
--- trunk/gnue-common/src/datasources/GDataSource.py    2004-12-01 04:38:18 UTC 
(rev 6766)
+++ trunk/gnue-common/src/datasources/GDataSource.py    2004-12-01 07:59:09 UTC 
(rev 6767)
@@ -85,6 +85,8 @@
                               'getCondition':{'function':self.getCondition},
                               'setCondition':{'function':self.setCondition},
                               'count' : {'function':self.triggerGetCount},
+                              'update': {'function':
+                                self.updateCurrentRecordSet}
                               }
 
     self._triggerProperties = {'extensions':{'get':self.getExtensions,
@@ -186,6 +188,29 @@
       tmsg = u_("Backend doesn't support the trigger 'call' function")
       raise StandardError, tmsg
 
+
+  # ---------------------------------------------------------------------------
+  # Update the current record set
+  # ---------------------------------------------------------------------------
+
+  def updateCurrentRecordSet (self):
+    """
+    If a result set is available having a record all fields of this record
+    would be updated. If the backend does not support this operation an
+    ApplicationError will be raised.
+    """
+
+    if self._currentResultSet is not None:
+      nr = self._currentResultSet.getRecordNumber ()
+      rs = self._currentResultSet.getRecord (nr)
+
+      if hasattr (rs, 'updateRecordSet'):
+        rs.updateRecordSet ()
+
+      else:
+        raise errors.ApplicationError, \
+            u_("Backend does not support the 'update' function")
+
   #
   # get/set the static condition assosiated with a datasource
   # the static condition is build out of the <condition> child

Modified: 
trunk/gnue-common/src/datasources/drivers/appserver/appserver/RecordSet.py
===================================================================
--- trunk/gnue-common/src/datasources/drivers/appserver/appserver/RecordSet.py  
2004-12-01 04:38:18 UTC (rev 6766)
+++ trunk/gnue-common/src/datasources/drivers/appserver/appserver/RecordSet.py  
2004-12-01 07:59:09 UTC (rev 6767)
@@ -129,6 +129,7 @@
                                [self._fields ['gnue_id']],
                                methodname,
                                parameters) [0]
+
       self.__updateFields ()
 
       self._updateFlag = True
@@ -145,6 +146,52 @@
 
 
   # ---------------------------------------------------------------------------
+  # Update the current record set
+  # ---------------------------------------------------------------------------
+
+  def updateRecordSet (self):
+    """
+    This function searches for the top level master record and post's it to the
+    backend. Doing this it makes sure all calculated fields have an up to date
+    value. As a side effect this will fire all 'OnChange' triggers bound to the
+    record's class definition.
+    """
+
+    if self._fields.get ('gnue_id') is None:
+      return
+
+    # Before calling the function, post all pending changes to the server
+    empty  = self._emptyFlag
+    insert = self._insertFlag
+    update = self._updateFlag
+
+    # Find out the top level record set regarding to master-/detail and call
+    # this recordset's post (). This will do implicit post's on the details
+    current = self._parent
+
+    while current._masterRecordSet is not None:
+      current = current._masterRecordSet._parent
+
+    try:
+      current.post ()
+
+      self.__updateFields ()
+
+      # Should we check if the _fields really have changed during the post to
+      # set the flags ?
+      self._updateFlag = True
+      self._emptyFlag  = False
+
+    except:
+      self._emptyFlag  = empty
+      self._insertFlag = insert
+      self._updateFlag = update
+
+      raise
+
+
+
+  # ---------------------------------------------------------------------------
   # Initialize a record 
   # ---------------------------------------------------------------------------
 

Modified: trunk/gnue-forms/src/GFObjects/GFBlock.py
===================================================================
--- trunk/gnue-forms/src/GFObjects/GFBlock.py   2004-12-01 04:38:18 UTC (rev 
6766)
+++ trunk/gnue-forms/src/GFObjects/GFBlock.py   2004-12-01 07:59:09 UTC (rev 
6767)
@@ -143,7 +143,8 @@
         'executeQuery':{'function':self.processQuery,
                         'description':'Executes the current query.'},
         'call': {'function'   : self.callFunction,
-                 'description': 'Executes a function of the datasource'}
+                 'description': 'Executes a function of the datasource'},
+        'update': {'function': self.updateCurrentRecordSet}
         }
 
     self._triggerProperties={
@@ -719,6 +720,18 @@
     return res
 
 
+  # ---------------------------------------------------------------------------
+  # Update the current datasource's record set
+  # ---------------------------------------------------------------------------
+
+  def updateCurrentRecordSet (self):
+    try:
+      self._dataSourceLink.updateCurrentRecordSet ()
+
+    finally:
+      self.switchRecord (0)
+
+
   ###################################################################
   #
   # Trigger settable stuff