- mapper _get_col_to_prop private method used

by the versioning example is deprecated;
now use mapper.get_property_by_column() which
will remain the public method for this.
- turned TODO in the history example into an assertion
with a descriptive reason

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/sqlalchemy/orm/mapper.py b/lib/sqlalchemy/orm/mapper.py
index f03dd6377..7d487ff2c 100644
--- a/lib/sqlalchemy/orm/mapper.py
+++ b/lib/sqlalchemy/orm/mapper.py
@@ -931,7 +931,19 @@ class Mapper(object):
                         "Mapper '%s' has no property '%s'" % (self, key))
                 else:
                     return None
+    
+    @util.deprecated('0.7',
+                     'Call to deprecated function mapper._get_col_to_pr'
+                     'op(). Use mapper.get_property_by_column()')
+    def _get_col_to_prop(self, col):
+        return self._columntoproperty[col]
+        
+    def get_property_by_column(self, column):
+        """Given a :class:`.Column` object, return the
+        :class:`.MapperProperty` which maps this column."""
 
+        return self._columntoproperty[column]
+        
     @property
     def iterate_properties(self):
         """return an iterator of all MapperProperty objects."""