Post by nschellenberger on Feb 28, 2023 17:02:43 GMT
Another esoteric protocol question (the answer to which is probably obvious to everyone but me...).
If a GET is made with a $select query which includes a property present in the schema but which is not supported by a particular Resource instance, what ought the response be:
I assume the correct answer in both cases is to produce an error response? Or should the property value be considered null (even if the property is declared not Nullable)?
Redfish Specification 1.17.0 §9.6.1 Properties overview
Redfish Specification 1.17.0 §7.3.3 The $select query parameter
OData 4.0 Errata 3 Part 2 URL §5.1.3 System Query Option $select
If a GET is made with a $select query which includes a property present in the schema but which is not supported by a particular Resource instance, what ought the response be:
- if it is the only Resource in a success response payload; and
- if it is a Member of a Collection in a success response payload.
I assume the correct answer in both cases is to produce an error response? Or should the property value be considered null (even if the property is declared not Nullable)?
Redfish Specification 1.17.0 §9.6.1 Properties overview
Resource instances should omit properties if the underlying product, service, or current configuration does not provide the function described by the property.
Redfish Specification 1.17.0 §7.3.3 The $select query parameter
... For successful responses, when services execute $select, they shall return all requested properties of the referenced resource. ...
OData 4.0 Errata 3 Part 2 URL §5.1.3 System Query Option $select
... Each selectItem in the $select clause indicates that the response MUST include the declared or dynamic properties, actions and functions identified by that selectItem. ...
...
If the selectItem is not defined for the type of the resource, and that type supports dynamic properties, then the property is treated as null for all instances on which it is not defined.
If the selectItem is not defined for the type of the resource, and that type does not support dynamic properties, then the request is considered malformed.
...
If the selectItem is not defined for the type of the resource, and that type supports dynamic properties, then the property is treated as null for all instances on which it is not defined.
If the selectItem is not defined for the type of the resource, and that type does not support dynamic properties, then the request is considered malformed.
