From: Greg Price <price@mit.edu>
Date: Wed, 1 Oct 2008 23:48:39 +0000 (-0400)
Subject: more sqlalchemy-0.4 changes
X-Git-Tag: sipb-xen-database/10.25^0
X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-database.git/commitdiff_plain/d120007286dc6ad3b08afbfdadc5faa23108098a

more sqlalchemy-0.4 changes

svn path=/trunk/packages/sipb-xen-database/; revision=991
---

diff --git a/debian/changelog b/debian/changelog
index abde326..2d99c31 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -2,6 +2,7 @@ sipb-xen-database (10.25) unstable; urgency=low
 
   * add remote and console to pg_hba.conf template
   * fix init script so it works
+  * port more code to sqlalchemy 0.4
 
  -- Greg Price <price@mit.edu>  Wed, 01 Oct 2008 19:30:26 -0400
 
diff --git a/python/database/__init__.py b/python/database/__init__.py
index 5eeb3c5..258c4d4 100644
--- a/python/database/__init__.py
+++ b/python/database/__init__.py
@@ -4,4 +4,6 @@ import sqlalchemy
 
 def connect(uri = config.db.uri):
     """ Connect to a given database URI"""
-    meta.bind = sqlalchemy.create_engine(uri)
+    engine = sqlalchemy.create_engine(uri)
+    meta.bind = engine
+    session.configure(bind=engine)
diff --git a/python/database/models.py b/python/database/models.py
index 6574ff1..b91107f 100644
--- a/python/database/models.py
+++ b/python/database/models.py
@@ -1,11 +1,12 @@
 from sqlalchemy import *
+from sqlalchemy import orm
 from sqlalchemy.orm import create_session, relation
 
 from sqlalchemy.ext.sessioncontext import SessionContext
 from sqlalchemy.ext.assignmapper import assign_mapper
 
 __all__ = ['meta',
-           'ctx',
+           'session',
            'clear_cache',
            'machine_table',
            'machine_access_table',
@@ -25,7 +26,7 @@ __all__ = ['meta',
            ]
 
 meta = ThreadLocalMetaData()
-ctx = SessionContext(create_session)
+session = orm.scoped_session(orm.sessionmaker())
 
 machine_table = Table('machines', meta,
        Column('machine_id', Integer, primary_key=True, nullable=False),
@@ -105,17 +106,17 @@ class Autoinstall(object):
     def __repr__(self):
         return "<Autoinstall %s: %s (%s)>" % (self.autoinstall_id, self.description, self.type.type_id)
 
-assign_mapper(ctx, Machine, machine_table,
+session.mapper(Machine, machine_table,
               properties={'nics': relation(NIC, backref="machine", lazy=False),
                           'disks': relation(Disk, backref="machine", lazy=False),
                           'type': relation(Type, lazy=False),
                           'acl': relation(MachineAccess, backref="machine", lazy=False, passive_deletes=True, cascade="all, delete-orphan")});
-assign_mapper(ctx, MachineAccess, machine_access_table)
-assign_mapper(ctx, NIC, nic_table)
-assign_mapper(ctx, Disk, disk_table)
-assign_mapper(ctx, Type, types_table)
-assign_mapper(ctx, CDROM, cdroms_table)
-assign_mapper(ctx, Autoinstall, autoinstalls_table)
+session.mapper(MachineAccess, machine_access_table)
+session.mapper(NIC, nic_table)
+session.mapper(Disk, disk_table)
+session.mapper(Type, types_table)
+session.mapper(CDROM, cdroms_table)
+session.mapper(Autoinstall, autoinstalls_table)
 
 def clear_cache():
     """Clear sqlalchemy's cache.
@@ -123,4 +124,5 @@ def clear_cache():
     This _seems_ to be the way; it works, but the docs don't mention
     it.  Why is this so obscure?"""
 
-    ctx.registry.clear()
+    # XXX maybe we still need to do this, but it's not doc'd how.
+    #ctx.registry.clear()