class CyborgPersistentObject(object):
"""Mixin class for Persistent objects.
This adds the fields that we use in common for most persistent objects.
"""
fields = {
'created_at': object_fields.DateTimeField(nullable=True),
'updated_at': object_fields.DateTimeField(nullable=True),
'deleted_at': object_fields.DateTimeField(nullable=True),
'deleted': object_fields.BooleanField(default=False),
}
class CyborgObject(object_base.VersionedObject):
"""Base class and object factory.
This forms the base of all objects that can be remoted or instantiated
via RPC. Simply defining a class that inherits from this base class
will make it remotely instantiatable. Objects should implement the
necessary "get" classmethod routines as well as "save" object methods
as appropriate.
"""
OBJ_SERIAL_NAMESPACE = 'cyborg_object'
OBJ_PROJECT_NAMESPACE = 'cyborg'
fields = {
'created_at': object_fields.DateTimeField(nullable=True),
'updated_at': object_fields.DateTimeField(nullable=True),
}
def as_dict(self):
return dict((k, getattr(self, k))
for k in self.fields
if hasattr(self, k))
@staticmethod
def _from_db_object(obj, db_obj):
"""Converts a database entity to a formal object.
:param obj: An object of the class.
:param db_obj: A DB model of the object
:return: The object of the class with the database entity added
"""
for field in obj.fields:
obj[field] = db_obj[field]
obj.obj_reset_changes()
return obj
@classmethod
def _from_db_object_list(cls, context, db_objs):
"""Converts a list of database entities to a list of formal objects."""
objs = []
for db_obj in db_objs:
objs.append(cls._from_db_object(cls(context), db_obj))
return objs