def __new__(self, id, **params):
domain_name = domain_for_model(self.model_class)
domain = Domain(name=domain_name, connection=manager.sdb)
item = Item(domain, id)
params['_id'] = id
item.update(params)
return item
def sql_create_model(self, model, style, known_models=set()):
""" We don't actually return any SQL here, but we do go right ahead
and create a domain for the model.
"""
domain_name = domain_for_model(model)
self.sdb.create_domain(domain_name)
return [], {}
def save_entity(connection, model, data):
domain_name = domain_for_model(model)
manager = connection.create_manager(domain_name)
attrs = {
'__type__': domain_name,
}
attrs.update(data)
if not attrs.has_key('_id'):
# New item. Generate an ID.
attrs['_id'] = uuid.uuid4().int
domain = Domain(name=domain_name, connection=manager.sdb)
domain.put_attributes(attrs['_id'], attrs, replace=True)
return attrs['_id']
def save_entity(connection, model, data):
domain_name = domain_for_model(model)
manager = connection.create_manager(domain_name)
attrs = {
'__type__': domain_name,
}
attrs.update(data)
if not attrs.has_key('_id'):
# New item. Generate an ID.
attrs['_id'] = uuid.uuid4().int
domain = Domain(name=domain_name, connection=manager.sdb)
domain.put_attributes(attrs['_id'], attrs, replace=True)
return attrs['_id']
def model_adapter(django_model, manager):
""" Return a generated subclass of django_model that conforms to the
API that boto expects of its own models.
"""
class ModelAdapter(object):
""" Adapter to provide the API that boto expects its models to have for
normal Django models
"""
def __new__(self, id, **params):
domain_name = domain_for_model(self.model_class)
domain = Domain(name=domain_name, connection=manager.sdb)
item = Item(domain, id)
params['_id'] = id
item.update(params)
return item
#return self.model_class(**attrs)
# Used by SDBManager._get_all_descendents. Might need to implement
# this for model inheritance...
__sub_classes__ = ()
# Used by simpledb.base.SDBManager to track the real Django model
# class this represents, and for us to know what kind of model to
# actually instantiate.
model_class = None
@classmethod
def find_property(cls, prop_name):
""" Find the named property. Returns None if the property can't
be found
"""
# Special-case - _id always maps to the primary key
if prop_name == '_id':
return property_from_field(django_model._meta.pk)
# Otherwise, look through the Django model fields for a field
# of the correct name. XXX should this be name or column?
result = None
for field in django_model._meta.fields:
if field.name == prop_name:
result = property_from_field(field)
break
return result
@classmethod
def properties(cls, hidden=True):
return [property_from_field(f) for f in django_model._meta.fields]
ModelAdapter.model_class = django_model
ModelAdapter.__name__ = domain_for_model(django_model)
return ModelAdapter
def delete(self):
items = dict([(e['_id'], None) for e in self.fetch_infinite(0)])
domain = Domain(name=domain_for_model(self.model),
connection=self.manager.sdb)
return domain.batch_delete_attributes(items)
def __init__(self, compiler, fields):
super(BackendQuery, self).__init__(compiler, fields)
# TODO: add your initialization code here
domain = domain_for_model(self.query.model)
self.db_query = SimpleDBQuery(
self.connection.create_manager(domain), self.query.model)
def __init__(self, compiler, fields):
super(BackendQuery, self).__init__(compiler, fields)
# TODO: add your initialization code here
domain = domain_for_model(self.query.model)
self.db_query = SimpleDBQuery(self.connection.create_manager(domain),
self.query.model)
