[Checkins] SVN: z3c.batching/trunk/src/z3c/batching/ Correctly handle empty lists.

[Stephan Richter]

Log message for revision 72503:
  Correctly handle empty lists.
  

Changed:
  U   z3c.batching/trunk/src/z3c/batching/batch.py
  U   z3c.batching/trunk/src/z3c/batching/interfaces.py

-=-
Modified: z3c.batching/trunk/src/z3c/batching/batch.py
===================================================================
--- z3c.batching/trunk/src/z3c/batching/batch.py	2007-02-12 15:14:10 UTC (rev 72502)
+++ z3c.batching/trunk/src/z3c/batching/batch.py	2007-02-12 19:39:47 UTC (rev 72503)
@@ -43,7 +43,10 @@
         if start + size >= len(list):
             self._trueSize = len(list) - start
         # See interfaces.IBatch
-        self.end = start + self._trueSize - 1
+        if len(list) == 0:
+            self.end = -1
+        else:
+            self.end = start + self._trueSize - 1
 
     @property
     def number(self):

Modified: z3c.batching/trunk/src/z3c/batching/interfaces.py
===================================================================
--- z3c.batching/trunk/src/z3c/batching/interfaces.py	2007-02-12 15:14:10 UTC (rev 72502)
+++ z3c.batching/trunk/src/z3c/batching/interfaces.py	2007-02-12 19:39:47 UTC (rev 72503)
@@ -45,7 +45,7 @@
     end = zope.schema.Int(
         title=u'End Index',
         description=u'The index of the sequence at which the batch ends.',
-        min=0,
+        min=-1,
         default=0,
         readonly=True,
         required=True)