add a warning for unported dialects. considered a full blown NotImplementedError but will see if this gets the message across

6 files changed, 13 insertions, 2 deletions

diff --git a/lib/sqlalchemy/databases/__init__.py b/lib/sqlalchemy/databases/__init__.py
index 16cabd47f..d7c6d7319 100644
--- a/lib/sqlalchemy/databases/__init__.py
+++ b/lib/sqlalchemy/databases/__init__.py
@@ -17,8 +17,6 @@ from sqlalchemy.dialects.access import base as access
 from sqlalchemy.dialects.sybase import base as sybase
 
 
-
-
 __all__ = (
     'access',
     'firebird',
diff --git a/lib/sqlalchemy/dialects/access/base.py b/lib/sqlalchemy/dialects/access/base.py
index ee61190ff..f4e30f0bd 100644
--- a/lib/sqlalchemy/dialects/access/base.py
+++ b/lib/sqlalchemy/dialects/access/base.py
@@ -178,6 +178,8 @@ class AccessDialect(default.DefaultDialect):
     supports_sane_rowcount = False
     supports_sane_multi_rowcount = False
 
+    ported_sqla_06 = False
+    
     def type_descriptor(self, typeobj):
         newobj = types.adapt_type(typeobj, self.colspecs)
         return newobj
diff --git a/lib/sqlalchemy/dialects/informix/base.py b/lib/sqlalchemy/dialects/informix/base.py
index 6565a812f..9fbfbf011 100644
--- a/lib/sqlalchemy/dialects/informix/base.py
+++ b/lib/sqlalchemy/dialects/informix/base.py
@@ -217,6 +217,8 @@ class InformixDialect(default.DefaultDialect):
     colspecs = colspecs
     ischema_names = ischema_names
 
+    ported_sqla_06 = False
+
     def do_begin(self, connect):
         cu = connect.cursor()
         cu.execute('SET LOCK MODE TO WAIT')
diff --git a/lib/sqlalchemy/dialects/maxdb/base.py b/lib/sqlalchemy/dialects/maxdb/base.py
index d5f00dbdd..9487ed7ed 100644
--- a/lib/sqlalchemy/dialects/maxdb/base.py
+++ b/lib/sqlalchemy/dialects/maxdb/base.py
@@ -805,6 +805,8 @@ class MaxDBDialect(default.DefaultDialect):
     ddl_compiler = MaxDBDDLCompiler
     execution_ctx_cls = MaxDBExecutionContext
 
+    ported_sqla_06 = False
+
     colspecs = colspecs
     ischema_names = ischema_names
     
diff --git a/lib/sqlalchemy/dialects/sybase/base.py b/lib/sqlalchemy/dialects/sybase/base.py
index cfdbd321a..527cecd03 100644
--- a/lib/sqlalchemy/dialects/sybase/base.py
+++ b/lib/sqlalchemy/dialects/sybase/base.py
@@ -339,6 +339,8 @@ class SybaseDialect(default.DefaultDialect):
     ddl_compiler = SybaseDDLCompiler
     preparer = SybaseIdentifierPreparer
 
+    ported_sqla_06 = False
+
     schema_name = "dba"
 
     def __init__(self, **params):
diff --git a/lib/sqlalchemy/engine/default.py b/lib/sqlalchemy/engine/default.py
index 41470f359..fecc16b3c 100644
--- a/lib/sqlalchemy/engine/default.py
+++ b/lib/sqlalchemy/engine/default.py
@@ -70,6 +70,11 @@ class DefaultDialect(base.Dialect):
                  encoding='utf-8', paramstyle=None, dbapi=None,
                  implicit_returning=None,
                  label_length=None, **kwargs):
+                 
+        if not getattr(self, 'ported_sqla_06', True):
+            util.warn(
+                "The %s dialect is not yet ported to SQLAlchemy 0.6" % self.name)
+        
         self.convert_unicode = convert_unicode
         self.assert_unicode = assert_unicode
         self.encoding = encoding