--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/commentator/model.py	Sun Jan 24 17:39:05 2010 -0500
@@ -0,0 +1,57 @@
+import os
+import pickle
+
+from datetime import datetime
+        
+class PickleComments(object):
+    # TODO: locking
+    def __init__(self, database):
+        self.database = database
+        if not os.path.exists(database):
+            f = file(database, 'w')
+            pickle.dump({}, f)
+            f.close()
+
+    def comment(self, uri, **kw):
+        f = file(self.database)
+        comments = pickle.load(f)
+        f.close()
+        comments.setdefault(uri, []).append(kw)
+        f = file(self.database, 'w')
+        comments = pickle.dump(comments, f)
+        f.close()
+
+    def comments(self, uri):
+        f = file(self.database)
+        comments = pickle.load(f)
+        f.close()
+        return comments.get(uri, [])
+
+    
+try:
+    import couchdb
+
+    class CouchComments(object):
+        def __init__(self, db):
+            self.couch = couchdb.Server()
+            if db not in self.couch:
+                self.db = self.couch.create(db)
+            else:
+                self.db = self.couch[db]
+
+        def comment(self, uri, **kw):
+            if uri in self.db:
+                comments = self.db[uri]['comments']
+                comments.append(kw)
+                self.db[uri] = { 'comments': comments }
+            else:
+                self.db[uri] = { 'comments': [ kw ] }
+
+        def comments(self, uri):
+            if uri in self.db:
+                doc = self.db[uri]
+                return doc ['comments']
+            return []
+
+except ImportError:
+    pass