Init declarative sqlalchemy base

daklib/database/base.py

+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+################################################################################
+
+from sqlalchemy import Column, DateTime
+from sqlalchemy.ext.declarative import declarative_base
+
+
+Base = declarative_base()

daklib/dbconn.py

@@ -77,6 +77,8 @@ warnings.filterwarnings('ignore',
     "Predicate of partial index .* ignored during reflection",
     SAWarning)
 
+from .database.base import Base
+
 
 ################################################################################
 
@@ -2570,7 +2572,7 @@ class DBConn(object):
 
         try:
             self.db_pg = create_engine(connstr, **engine_args)
-            self.db_meta = MetaData()
+            self.db_meta = Base.metadata
             self.db_meta.bind = self.db_pg
             self.db_smaker = sessionmaker(bind=self.db_pg,
                                           autoflush=True,