1 files changed, 0 insertions, 74 deletions
diff --git a/lib/sqlalchemy/ext/declarative.py b/lib/sqlalchemy/ext/declarative.py
index feee435ed..39aaf5488 100755
--- a/lib/sqlalchemy/ext/declarative.py
+++ b/lib/sqlalchemy/ext/declarative.py
@@ -827,80 +827,6 @@ from multiple collections::
 
         id =  Column(Integer, primary_key=True)
 
-Defining Indexes in Mixins
-~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-If you need to define a multi-column index that applies to all tables
-that make use of a particular mixin, you will need to do this in a
-metaclass as shown in the following example::
-
-        from sqlalchemy.ext.declarative import DeclarativeMeta
-
-        class MyMixinMeta(DeclarativeMeta):
-
-            def __init__(cls,*args,**kw):
-                if getattr(cls,'_decl_class_registry',None) is None:
-                    return
-                super(MyMeta,cls).__init__(*args,**kw)
-                # Index creation done here
-                Index('test',cls.a,cls.b)
-
-        class MyMixin(object):
-            __metaclass__=MyMixinMeta
-            a =  Column(Integer)
-            b =  Column(Integer)
-
-        class MyModel(Base,MyMixin):
-            __tablename__ = 'atable'
-            c =  Column(Integer,primary_key=True)
-
-Using multiple Mixins that require Metaclasses
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-If you end up in a situation where you need to use multiple mixins and
-more than one of them uses a metaclass to, for example, create a
-multi-column index, then you will need to create a metaclass that
-correctly combines the actions of the other metaclasses. For example::
-
-        class MyMeta1(DeclarativeMeta):
-
-            def __init__(cls,*args,**kw):
-                if getattr(cls,'_decl_class_registry',None) is None:
-                    return
-                super(MyMeta1,cls).__init__(*args,**kw)
-                Index('ab',cls.a,cls.b)
-
-        class MyMixin1(object):
-            __metaclass__=MyMeta1
-            a =  Column(Integer)
-            b =  Column(Integer)
-
-        class MyMeta2(DeclarativeMeta):
-
-            def __init__(cls,*args,**kw):
-                if getattr(cls,'_decl_class_registry',None) is None:
-                    return
-                super(MyMeta2,cls).__init__(*args,**kw)
-                Index('cd',cls.c,cls.d)
-
-        class MyMixin2(object):
-            __metaclass__=MyMeta2
-            c =  Column(Integer)
-            d =  Column(Integer)
-
-        class CombinedMeta(MyMeta1,MyMeta2):
-            # This is needed to successfully combine
-            # two mixins which both have metaclasses
-            pass
-
-        class MyModel(Base,MyMixin1,MyMixin2):
-            __tablename__ = 'awooooga'
-            __metaclass__ = CombinedMeta
-            z =  Column(Integer,primary_key=True)
-
-For this reason, if a mixin requires a custom metaclass, this should
-be mentioned in any documentation of that mixin to avoid confusion
-later down the line.
 
 Class Constructor
 =================