Python fields.Field方法代碼示例

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import Field [as 別名]
def test_serialization(self):
        @base.VersionedObjectRegistry.register
        class Foo(base.ObjectListBase, base.VersionedObject):
            fields = {'objects': fields.ListOfObjectsField('Bar')}

        @base.VersionedObjectRegistry.register
        class Bar(base.VersionedObject):
            fields = {'foo': fields.Field(fields.String())}

        obj = Foo(objects=[])
        for i in 'abc':
            bar = Bar(foo=i)
            obj.objects.append(bar)

        obj2 = base.VersionedObject.obj_from_primitive(obj.obj_to_primitive())
        self.assertFalse(obj is obj2)
        self.assertEqual([x.foo for x in obj],
                         [y.foo for y in obj2]) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import Field [as 別名]
def test_comparable_objects(self):
        @objects.base.KarborObjectRegistry.register
        class MyComparableObj(objects.base.KarborObject,
                              objects.base.KarborObjectDictCompat,
                              objects.base.KarborComparableObject):
            fields = {'foo': fields.Field(fields.Integer())}

        class NonVersionedObject(object):
            pass

        obj1 = MyComparableObj(foo=1)
        obj2 = MyComparableObj(foo=1)
        obj3 = MyComparableObj(foo=2)
        obj4 = NonVersionedObject()
        self.assertTrue(obj1 == obj2)
        self.assertFalse(obj1 == obj3)
        self.assertFalse(obj1 == obj4)
        self.assertNotEqual(obj1, None) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import Field [as 別名]
def setUp(self):
        super(TestField, self).setUp()
        self.field = fields.Field(FakeFieldType())
        self.coerce_good_values = [('foo', '*foo*')]
        self.coerce_bad_values = []
        self.to_primitive_values = [('foo', '!foo!')]
        self.from_primitive_values = [('!foo!', 'foo')] 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import Field [as 別名]
def test_subclassability(self):
        class MyRegistryOne(base.VersionedObjectRegistry):

            def registration_hook(self, cls, index):
                cls.reg_to = "one"

        class MyRegistryTwo(base.VersionedObjectRegistry):

            def registration_hook(self, cls, index):
                cls.reg_to = "two"

        @MyRegistryOne.register
        class AVersionedObject1(base.VersionedObject):
            VERSION = '1.0'
            fields = {'baz': fields.Field(fields.Integer())}

        @MyRegistryTwo.register
        class AVersionedObject2(base.VersionedObject):
            VERSION = '1.0'
            fields = {'baz': fields.Field(fields.Integer())}

        self.assertIn('AVersionedObject1',
                      MyRegistryOne.obj_classes())
        self.assertIn('AVersionedObject2',
                      MyRegistryOne.obj_classes())
        self.assertIn('AVersionedObject1',
                      MyRegistryTwo.obj_classes())
        self.assertIn('AVersionedObject2',
                      MyRegistryTwo.obj_classes())
        self.assertIn('AVersionedObject1',
                      base.VersionedObjectRegistry.obj_classes())
        self.assertIn('AVersionedObject2',
                      base.VersionedObjectRegistry.obj_classes())
        self.assertEqual(AVersionedObject1.reg_to, "one")
        self.assertEqual(AVersionedObject2.reg_to, "two") 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import Field [as 別名]
def test_load_in_base(self):
        @base.VersionedObjectRegistry.register
        class Foo(base.VersionedObject):
            fields = {'foobar': fields.Field(fields.Integer())}
        obj = Foo()
        with self.assertRaisesRegex(NotImplementedError, ".*foobar.*"):
            obj.foobar 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import Field [as 別名]
def test_obj_fields(self):
        class TestObj(base.VersionedObject):
            fields = {'foo': fields.Field(fields.Integer())}
            obj_extra_fields = ['bar']

            @property
            def bar(self):
                return 'this is bar'

        obj = TestObj()
        self.assertEqual(['foo', 'bar'], obj.obj_fields) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import Field [as 別名]
def setUp(self):
        super(TestTimestampedObject, self).setUp()

        @base.VersionedObjectRegistry.register_if(False)
        class MyTimestampedObject(base.VersionedObject,
                                  base.TimestampedObject):
            fields = {
                'field1': fields.Field(fields.String()),
            }

        self.myclass = MyTimestampedObject
        self.my_object = self.myclass(field1='field1') 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import Field [as 別名]
def _render_object(cls, object, *args, **kwargs):

        # We need to findout the type of field sometimes - these are helper
        # methods for that.

        def _is_datetime_field(object, key):
            field = object.FIELDS.get(key, {})
            if isinstance(field, fields.Field):
                # TODO(daidv): If we change to use DateTimeField or STL
                # we should change this to exact object
                return isinstance(field, fields.DateTimeField)
            else:
                return field.get('schema', {}).get('format', '') == 'date-time'

        def _format_datetime_field(obj):
            return datetime.datetime.strftime(
                obj, utils.DATETIME_FORMAT)

        # The dict we will return to be rendered to JSON / output format
        r_obj = {}
        # Loop over all fields that are supposed to be output
        for key, value in cls.MODIFICATIONS['fields'].items():
            # Get properties for this field
            field_props = cls.MODIFICATIONS['fields'][key]
            # Check if it has to be renamed
            if field_props.get('rename', False):
                obj = getattr(object, field_props.get('rename'))
                # if rename is specified we need to change the key
                obj_key = field_props.get('rename')
            else:
                # if not, move on
                obj = getattr(object, key, None)
                obj_key = key
            # Check if this item is a relation (another DesignateObject that
            # will need to be converted itself
            field = object.FIELDS.get(obj_key, {})
            if isinstance(field, dict) and field.get('relation'):
                # Get a adapter for the nested object
                # Get the class the object is and get its adapter, then set
                # the item in the dict to the output
                r_obj[key] = cls.get_object_adapter(
                    cls.ADAPTER_FORMAT,
                    object.FIELDS[obj_key].get('relation_cls')).render(
                    cls.ADAPTER_FORMAT, obj, *args, **kwargs)
            elif hasattr(field, 'objname'):
                # Add by daidv: Check if field is OVO field and have a relation
                r_obj[key] = cls.get_object_adapter(
                    cls.ADAPTER_FORMAT,
                    field.objname).render(
                    cls.ADAPTER_FORMAT, obj, *args, **kwargs)
            elif _is_datetime_field(object, obj_key) and obj is not None:
                # So, we now have a datetime object to render correctly
                # see bug #1579844
                r_obj[key] = _format_datetime_field(obj)
            else:
                # Just attach the damn item if there is no weird edge cases
                r_obj[key] = obj
        # Send it back
        return r_obj 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import Field [as 別名]
def _make_class_properties(cls):
    # NOTE(danms/comstud): Inherit fields from super classes.
    # mro() returns the current class first and returns 'object' last, so
    # those can be skipped.  Also be careful to not overwrite any fields
    # that already exist.  And make sure each cls has its own copy of
    # fields and that it is not sharing the dict with a super class.
    cls.fields = dict(cls.fields)
    for supercls in cls.mro()[1:-1]:
        if not hasattr(supercls, 'fields'):
            continue
        for name, field in supercls.fields.items():
            if name not in cls.fields:
                cls.fields[name] = field
    for name, field in cls.fields.items():
        if not isinstance(field, obj_fields.Field):
            raise exception.ObjectFieldInvalid(
                field=name, objname=cls.obj_name())

        def getter(self, name=name):
            attrname = _get_attrname(name)
            if not hasattr(self, attrname):
                self.obj_load_attr(name)
            return getattr(self, attrname)

        def setter(self, value, name=name, field=field):
            attrname = _get_attrname(name)
            field_value = field.coerce(self, name, value)
            if field.read_only and hasattr(self, attrname):
                # Note(yjiang5): _from_db_object() may iterate
                # every field and write, no exception in such situation.
                if getattr(self, attrname) != field_value:
                    raise exception.ReadOnlyFieldError(field=name)
                else:
                    return

            self._changed_fields.add(name)
            try:
                return setattr(self, attrname, field_value)
            except Exception:
                with excutils.save_and_reraise_exception():
                    attr = "%s.%s" % (self.obj_name(), name)
                    LOG.exception('Error setting %(attr)s',
                                  {'attr': attr})

        def deleter(self, name=name):
            attrname = _get_attrname(name)
            if not hasattr(self, attrname):
                raise AttributeError("No such attribute `%s'" % name)
            delattr(self, attrname)

        setattr(cls, name, property(getter, setter, deleter)) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import Field [as 別名]
def test_obj_dict_field_modifications(self):
        @base.VersionedObjectRegistry.register
        class ObjWithDict(base.VersionedObject):
            fields = {
                'dict_field': fields.Field(fields.Dict(fields.Integer())),
            }
        obj = ObjWithDict()
        obj.dict_field = {"1": 1, "3": 3, "4": 4}

        def set_by_key(key, value):
            obj.dict_field[key] = value

        def add_by_key(key, value):
            obj.dict_field[key] = value

        def update_w_dict(key, value):
            obj.dict_field.update({key: value})

        def update_w_kwargs(key, value):
            obj.dict_field.update(**{key: value})

        def setdefault(key, value):
            obj.dict_field.setdefault(key, value)

        # positive tests to ensure that coercing works properly
        set_by_key("1", "10")
        add_by_key("2", "20")
        update_w_dict("3", "30")
        update_w_kwargs("4", "40")
        setdefault("5", "50")
        self.assertEqual({"1": 10, "2": 20, "3": 30, "4": 40, "5": 50},
                         obj.dict_field)
        obj.obj_reset_changes()
        # negative tests with non-coerceable values
        self.assertRaises(ValueError, set_by_key, "key", "abc")
        self.assertRaises(ValueError, add_by_key, "other", "abc")
        self.assertRaises(ValueError, update_w_dict, "key", "abc")
        self.assertRaises(ValueError, update_w_kwargs, "key", "abc")
        self.assertRaises(ValueError, setdefault, "other", "abc")
        # ensure that nothing has been changed
        self.assertEqual({"1": 10, "2": 20, "3": 30, "4": 40, "5": 50},
                         obj.dict_field)
        self.assertEqual({}, obj.obj_get_changes())