From 35a674aab4a832e76232e7be4b16b7a635a19824 Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Sun, 2 Jun 2013 19:48:30 -0400
Subject: - figured out what the from_self() thing was about, part of
 query.statement, but would like to improve upon query.statement needing to do
 this

---
 lib/sqlalchemy/sql/compiler.py | 8 +-------
 lib/sqlalchemy/sql/util.py     | 1 -
 lib/sqlalchemy/sql/visitors.py | 4 +++-
 3 files changed, 4 insertions(+), 9 deletions(-)

(limited to 'lib/sqlalchemy/sql')

diff --git a/lib/sqlalchemy/sql/compiler.py b/lib/sqlalchemy/sql/compiler.py
index 27e883c86..ff041d5e4 100644
--- a/lib/sqlalchemy/sql/compiler.py
+++ b/lib/sqlalchemy/sql/compiler.py
@@ -1080,7 +1080,7 @@ class SQLCompiler(engine.Compiled):
     def _transform_select_for_nested_joins(self, select):
         adapters = []
 
-        traverse_options = {"cloned": {}}
+        traverse_options = {"cloned": {}, "unconditional": True}
 
         def visit_join(elem):
             if isinstance(elem.right, sql.FromGrouping):
@@ -1095,19 +1095,13 @@ class SQLCompiler(engine.Compiled):
                     c._label = c._key_label = c.name
 
                 elem.right = selectable
-                import pdb
-                pdb.set_trace()
                 adapter = sql_util.ClauseAdapter(selectable,
                                         traverse_options=traverse_options)
-                adapter.__traverse_options__.pop('stop_on')
                 adapters.append(adapter)
 
         select = visitors.cloned_traverse(select,
                                     traverse_options, {"join": visit_join})
 
-        if adapters:
-            import pdb
-            pdb.set_trace()
         for adap in reversed(adapters):
             select = adap.traverse(select)
         return select
diff --git a/lib/sqlalchemy/sql/util.py b/lib/sqlalchemy/sql/util.py
index 6a267752e..ffa07d3df 100644
--- a/lib/sqlalchemy/sql/util.py
+++ b/lib/sqlalchemy/sql/util.py
@@ -833,7 +833,6 @@ class ClauseAdapter(visitors.ReplacingCloningVisitor):
         return newcol
 
     def replace(self, col):
-        print "COL!", col
         if isinstance(col, expression.FromClause) and \
             self.selectable.is_derived_from(col):
             return self.selectable
diff --git a/lib/sqlalchemy/sql/visitors.py b/lib/sqlalchemy/sql/visitors.py
index 31ac686e3..c5a45ffd4 100644
--- a/lib/sqlalchemy/sql/visitors.py
+++ b/lib/sqlalchemy/sql/visitors.py
@@ -286,10 +286,12 @@ def replacement_traverse(obj, opts, replace):
 
     cloned = util.column_dict()
     stop_on = util.column_set([id(x) for x in opts.get('stop_on', [])])
+    unconditional = opts.get('unconditional', False)
 
     def clone(elem, **kw):
         if id(elem) in stop_on or \
-            'no_replacement_traverse' in elem._annotations:
+            (not unconditional
+                    and 'no_replacement_traverse' in elem._annotations):
             return elem
         else:
             newelem = replace(elem)
-- 
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