Trying to get around the problem of metadata not being bound to an engine.

bzr-revno: 289

openlp.org 2.0.e4p

@@ -148,7 +148,7 @@
   </Others>
   <MainScript>openlp.pyw</MainScript>
   <Vcs>
-    <VcsType>Subversion</VcsType>
+    <VcsType>PySvn</VcsType>
     <VcsOptions>
       <dict>
         <key>
@@ -220,7 +220,7 @@
         </key>
         <value>
           <list>
-            <string></string>
+            <string></string>
           </list>
         </value>
         <key>

openlp/plugins/songs/lib/meta.py

@@ -0,0 +1,33 @@
+# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
+"""
+OpenLP - Open Source Lyrics Projection
+Copyright (c) 2008 Raoul Snyman
+Portions copyright (c) 2008 Martin Thompson, Tim Bentley,
+
+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; version 2 of the License.
+
+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 MetaData
+from sqlalchemy.orm import scoped_session, sessionmaker
+
+__all__ = ['session', 'metadata', 'engine']
+
+# SQLAlchemy database engine.  Updated by model.init_model()
+engine = None
+
+# SQLAlchemy session manager.  Updated by model.init_model()
+session = None
+
+# Global metadata. If you have multiple databases with overlapping table
+# names, you'll need a metadata for each database
+metadata = MetaData()

openlp/plugins/songs/lib/models.py

@@ -20,22 +20,22 @@ Place, Suite 330, Boston, MA 02111-1307 USA
 from sqlalchemy import create_engine
 from sqlalchemy.orm import scoped_session, sessionmaker, mapper, relation
 
+from openlp.plugins.songs.lib.meta import session, metadata, engine
 from openlp.plugins.songs.lib.tables import *
 from openlp.plugins.songs.lib.classes import *
 
-session = None
-
 def init_models(url):
+    engine = create_engine(url)
     session = scoped_session(sessionmaker(autoflush=True, autocommit=False,
-                                          bind=create_engine(url)))
+                                          bind=engine))
+    metadata.bind = engine
 
-
-#mapper(Author, authors_table)
-#mapper(Book, song_books_table)
-#mapper(Song, songs_table,
-#       properties={'authors': relation(Author, backref='songs',
-#                                       secondary=authors_songs_table),
-#                   'book': relation(Book, backref='songs'),
-#                   'topics': relation(Topic, backref='songs',
-#                                      secondary=songs_topics_table)})
-#mapper(Topic, topics_table)
+mapper(Author, authors_table)
+mapper(Book, song_books_table)
+mapper(Song, songs_table,
+       properties={'authors': relation(Author, backref='songs',
+                                       secondary=authors_songs_table),
+                   'book': relation(Book, backref='songs'),
+                   'topics': relation(Topic, backref='songs',
+                                      secondary=songs_topics_table)})
+mapper(Topic, topics_table)

openlp/plugins/songs/lib/tables.py

@@ -17,9 +17,9 @@ 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, Table, MetaData, ForeignKey, types
+from sqlalchemy import Column, Table, ForeignKey, types
 
-metadata = MetaData()
+from openlp.plugins.songs.lib.meta import metadata
 
 # Definition of the "authors" table
 authors_table = Table('authors', metadata,