refactor to Compiled.get_params() to return new ClauseParameters object, a more intelligent bind parameter dictionary that does type conversions late and preserves the unconverted value; used to fix mappers not comparing correct value in post-fetch [ticket:110]

removed pre_exec assertion from oracle/firebird regarding "check for sequence/primary key value"
fix to Unicode type to check for null, fixes [ticket:109]
create_engine() now uses genericized parameters; host/hostname, db/dbname/database, password/passwd, etc. for all engine connections
fix to select([func(column)]) so that it creates a FROM clause to the column's table, fixes [ticket:111]
doc updates for column defaults, indexes, connection pooling, engine params
unit tests for the above bugfixes

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/sqlalchemy/mapping/mapper.py b/lib/sqlalchemy/mapping/mapper.py
index 554b2d5b4..a77c2db12 100644
--- a/lib/sqlalchemy/mapping/mapper.py
+++ b/lib/sqlalchemy/mapping/mapper.py
@@ -651,8 +651,8 @@ class Mapper(object):
             for c in table.c:
                 if c.primary_key or not params.has_key(c.name):
                     continue
-                if self._getattrbycolumn(obj, c) != params[c.name]:
-                    self._setattrbycolumn(obj, c, params[c.name])
+                if self._getattrbycolumn(obj, c) != params.get_original(c.name):
+                    self._setattrbycolumn(obj, c, params.get_original(c.name))
 
     def delete_obj(self, objects, uow):
         """called by a UnitOfWork object to delete objects, which involves a