Compute loop invariants outside of loop.

Iterate over object ids instead of over object values.
Instead of using find, then spliting string, first split and compare with list items.
Check that *all* subparts of cell id are ints, not just the first one.
Remove unneeded value assignment.
Fix comment.
Clarify "try" structure: append is what must happen if no error is raised.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@18557 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/XMLMatrix.py

@@ -212,20 +212,22 @@ class XMLMatrix(Folder):
 
       # List all valid cell ids for current base_id.
       object_id_list = []
-      for obj in self.objectValues():
-        object_id = obj.getId()
-        if object_id.find(base_id) == 0:
-          # Check that all '_'-separated fields are of int type.
-          if (object_id) > len(base_id):
+      base_id_len = len(base_id)
+      for object_id in self.objectIds():
+        object_id_list = object_id.split('_')
+        if len(object_id_list) > 1 and object_id_list.pop(0) == base_id:
           try:
-              int(object_id[len(base_id)+1:].split('_')[0])
-              test = self._getOb(object_id) # If the object was created
+            # Check that all '_'-separated fields are of int type (once
+            # base_id is poped).
+            [int(x) for x in object_id_list]
+            self._getOb(object_id) # If the object was created
                                    # during this transaction,
                                    # then we do not need to
                                    # work on it
-              object_id_list.append(object_id)
           except (ValueError, KeyError):
             pass
+          else:
+            object_id_list.append(object_id)
 
       # Prepend 'temp_' to all cells, to avoid id conflicts while renaming.
       for object_id in object_id_list: