--- a/Mapping.py	Tue Feb 15 03:40:26 2011 +0100
+++ b/Mapping.py	Wed Feb 16 06:18:40 2011 +0100
@@ -28,7 +28,7 @@
 def _createMapping(engine):
     metadata = MetaData(engine)
     metadata.bind = engine
-    
+
     feedTable = Table("feed", metadata,
         Column("pk", Integer, primary_key=True),
         Column("title", String(255), nullable=False),
@@ -36,14 +36,14 @@
         # update interval is specified in minutes
         Column("update_interval", Integer, nullable=False),
         Column("next_update", DateTime, nullable=False),
-        # when displaying an entry of this feed, do not display the summary but rather load 
+        # when displaying an entry of this feed, do not display the summary but rather load
         # the link directly
         Column("auto_load_entry_link", Boolean, nullable=False),
         # this is actually a hack: when opening some sites in the QWebView it just crashes.
         # This setting forces to open an entry's link in the external browser
         Column("always_open_in_browser", Boolean, nullable=False)
     )
-    
+
     global feedEntryTable
     feedEntryTable = Table("feed_entry", metadata,
         Column("pk", Integer, primary_key=True),
@@ -57,7 +57,7 @@
         Column("updated", DateTime),
         Column("feed_id", Integer, ForeignKey("feed.pk"))
     )
-    
+
     preferencesTable = Table("preference", metadata,
         Column("pk", Integer, primary_key=True),
         Column("key", String(255), nullable=False),
@@ -69,7 +69,7 @@
     mapper(FeedEntry, feedEntryTable)
     mapper(Feed, feedTable,
         properties = {
-            "entries" : relation(FeedEntry, backref="feed", lazy=True)
+            "entries" : relation(FeedEntry, backref="feed", lazy=True, cascade="delete, delete-orphan")
         }
     )
     mapper(Preference, preferencesTable)