def render(self, session, osname, osversion, archetype, comments,
**arguments):
valid = re.compile('^[a-zA-Z0-9_.-]+$')
if (not valid.match(osname)):
raise ArgumentError("OS name '%s' is not valid." % osname)
if not valid.match(osversion):
raise ArgumentError("OS version '%s' is not valid." % osversion)
dbarchetype = Archetype.get_unique(session, archetype, compel=True)
OperatingSystem.get_unique(session,
name=osname,
version=osversion,
archetype=dbarchetype,
preclude=True)
dbos = OperatingSystem(name=osname,
version=osversion,
archetype=dbarchetype,
comments=comments)
session.add(dbos)
return
