def key_for_namespace(cls, namespace):
"""Return the Key for a namespace.
Args:
namespace (str): A string giving the namespace whose key is
requested.
Returns:
key.Key: The Key for the namespace.
"""
if namespace:
return model.Key(cls.KIND_NAME, namespace)
else:
return model.Key(cls.KIND_NAME, cls.EMPTY_NAMESPACE_ID)
def key_for_kind(cls, kind):
"""Return the __kind__ key for kind.
Args:
kind (str): kind whose key is requested.
Returns:
key.Key: key for kind.
"""
return model.Key(cls.KIND_NAME, kind)
def key_for_kind(cls, kind):
"""Return the __property__ key for kind.
Args:
kind (str): kind whose key is requested.
Returns:
key.Key: The parent key for __property__ keys of kind.
"""
return model.Key(Kind.KIND_NAME, kind)
def key_for_property(cls, kind, property):
"""Return the __property__ key for property of kind.
Args:
kind (str): kind whose key is requested.
property (str): property whose key is requested.
Returns:
key.Key: The key for property of kind.
"""
return model.Key(Kind.KIND_NAME, kind, Property.KIND_NAME, property)
def key_for_entity_group(cls, key):
"""Return the key for the entity group containing key.
Args:
key (key.Key): a key for an entity group whose __entity_group__ key
you want.
Returns:
key.Key: The __entity_group__ key for the entity group containing
key.
"""
return model.Key(cls.KIND_NAME, cls.ID, parent=key.root())
