[jboss-as7-dev] Expressions (Detyped API document feedback)

[David M. Lloyd]

On 01/06/2011 04:42 AM, Kabir Khan wrote:
>
> On 6 Jan 2011, at 08:39, Max Rydahl Andersen wrote:
>
>>>>>>> 2) If there is significant benefit, how can we model this using the
>>>>>>> simpler type system?
>>>>>>
>>>>>> Easy - I can add a PROPERTY_EXPRESSION type which attempts to resolve
>>>>>> the expression when you call asString()/asInt()/etc. (toString() would
>>>>>> return the expression).
>>>>>>
>>>>>
>>>>> This would need to be done on the server side and the calculated result
>>>>> shipped to the client.
>>>>
>>>> I'm not sure this is really necessary.  I'd think we'd have runtime
>>>> operations available to query the actual values in use for these kinds
>>>> of things; I think for regular model queries the user would want to read
>>>> back the expressions only.
>>>>
>>>
>>> This is true. The client can decide how to handle this themselves.
>>> Simply returning PROPERTY_EXPRESSION from ModelNode.getType() is enough
>>> to tell the client that the value needs to be resolved; they can decide
>>> what to do with that information.
>>
>> How would a client resolve the expression ? Or rather - how could the client get the effective value of the property as seen by the server ?
>
> A 'query-property' operation?

Yeah, or like I mentioned, maybe a flag to the "read" operation saying 
"give me this model node from server X with all properties resolved".

-- 
- DML