X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-database.git/blobdiff_plain/f397db06b0260d780be34a33d1a158bf894e2a8f..d120007286dc6ad3b08afbfdadc5faa23108098a:/python/database/models.py diff --git a/python/database/models.py b/python/database/models.py index ee207f6..b91107f 100644 --- a/python/database/models.py +++ b/python/database/models.py @@ -1,10 +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', @@ -20,10 +22,11 @@ __all__ = ['meta', 'Type', 'CDROM', 'Autoinstall', + 'or_', ] -meta = DynamicMetaData() -ctx = SessionContext(create_session) +meta = ThreadLocalMetaData() +session = orm.scoped_session(orm.sessionmaker()) machine_table = Table('machines', meta, Column('machine_id', Integer, primary_key=True, nullable=False), @@ -36,7 +39,8 @@ machine_table = Table('machines', meta, Column('administrator', String, nullable=False, default=False), Column('type_id', String, ForeignKey('types.type_id'), nullable=False), Column('autorestart', Boolean, nullable=False, default=False), - Column('cpus', Integer, nullable=False, default=1)) + Column('cpus', Integer, nullable=False, default=1), + Column('adminable', Boolean, nullable=False, default=False)) nic_table = Table('nics', meta, Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=True), @@ -102,17 +106,17 @@ class Autoinstall(object): def __repr__(self): return "" % (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. @@ -120,4 +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()