--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/backend/sqlalchemy/Feed.py	Sun Aug 21 03:55:16 2011 +0200
@@ -0,0 +1,46 @@
+
+from datetime import datetime, timedelta
+import FeedEntry
+
+class Feed(object):
+    @staticmethod
+    def all(session):
+        return session.query(Feed).order_by(Feed.title).all()
+
+    def __init__(self, title, rss_url):
+        self.title = title
+        self.rss_url = rss_url
+        # default: update every 60 minutes
+        self.update_interval = 60
+        self.incrementNextUpdateDate()
+        self.auto_load_entry_link = False
+        self.always_open_in_browser = False
+
+    def __repr__(self):
+        return "<Feed (%d) %s>" % (self.pk, self.title)
+
+    def userPresentableString(self):
+        return self.title
+
+    def entriesSortedByUpdateDate(self, hideReadEntries=False):
+        if hideReadEntries:
+            sortedEntries = self._unreadEntries()
+        else:
+            sortedEntries = list(self.entries)
+        sortedEntries.sort(FeedEntry.compareByUpdateDate)
+        return sortedEntries
+
+    def _unreadEntries(self):
+        retValue = []
+        for entry in self.entries:
+            if not entry.read:
+                retValue.append(entry)
+        return retValue
+
+    def incrementNextUpdateDate(self):
+        delta = timedelta(minutes=self.update_interval)
+        self.next_update = datetime.now() + delta
+
+    def markAllEntriesRead(self):
+        for entry in self.entries:
+            entry.markRead()
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