Support ordering on column objects

Richard O'Dwyer · Richard O'Dwyer · commit bca0cee969b2 · 2016-06-30T22:26:52.000+01:00
diff --git a/cassandra/cqlengine/columns.py b/cassandra/cqlengine/columns.py
@@ -168,6 +168,36 @@ def __init__(self,
         self.position = Column.instance_counter
         Column.instance_counter += 1
 
+    def __ne__(self, other):
+        if isinstance(other, Column):
+            return self.position != other.position
+        return NotImplemented
+
+    def __eq__(self, other):
+        if isinstance(other, Column):
+            return self.position == other.position
+        return NotImplemented
+
+    def __lt__(self, other):
+        if isinstance(other, Column):
+            return self.position < other.position
+        return NotImplemented
+
+    def __le__(self, other):
+        if isinstance(other, Column):
+            return self.position <= other.position
+        return NotImplemented
+
+    def __gt__(self, other):
+        if isinstance(other, Column):
+            return self.position > other.position
+        return NotImplemented
+
+    def __ge__(self, other):
+        if isinstance(other, Column):
+            return self.position >= other.position
+        return NotImplemented
+
     def validate(self, value):
         """
         Returns a cleaned and validated value. Raises a ValidationError
