def new(identity, value_info, getter=None, setter=None,
deleter=None, meta=None):
cls_name = utils.mk_class_name(identity, "Attribute")
cls = MetaAttribute(cls_name, (_DynAttribute, ), {"__slots__": ()})
cls.annotate_identity(identity)
cls.annotate_value(value_info)
cls.apply_class_meta(meta)
if getter is not None:
Action = action.MetaAction.new("get." + identity,
ActionCategories.retrieve,
effects=[getter],
result_info=value_info,
is_idempotent=True)
cls.annotate_action(u"get", Action)
if setter is not None:
def _set_attribute(value, context):
d = setter(value, context)
# attribute setter return the validate value
d.addCallback(defer.override_result, value)
return d
Action = action.MetaAction.new("set." + identity,
ActionCategories.update,
effects=[_set_attribute],
value_info=value_info,
result_info=value_info,
is_idempotent=True)
cls.annotate_action(u"set", Action)
if deleter is not None:
Action = action.MetaAction.new('delete.' + identity,
ActionCategories.delete,
effects=[
deleter,
effect.static_value('')],
result_info=value_module.String(),
is_idempotent=True)
cls.annotate_action(u"del", Action)
return cls
def model_from_dict(values, source, type_name):
result = dict()
if not values:
return result
for name, v in values.iteritems():
v_info = None
if isinstance(v, int):
v_info = value.Integer()
elif isinstance(v, (str, unicode)):
v_info = value.String()
if v_info:
iden = type_name + '.' + name
Attribute = attribute.MetaAttribute.new(
iden, v_info, getter=effect.static_value(v))
result[name] = Attribute(source)
return result