RE: SCXML <send> namelistexpr

It depends on your data model.  You can also use param which allows expr to give you more control of what is submitted.

From: www-voice-request@w3.org [mailto:www-voice-request@w3.org] On Behalf Of Ian Sutherland
Sent: Wednesday, November 24, 2010 3:58 PM
To: Jim Barnett
Cc: Pierre.Wellner@inficon.com; www-voice@w3.org
Subject: Re: SCXML <send> namelistexpr

On 24-Nov-10 14:40, Jim Barnett wrote:
Pierre,
We have discussed this issue a couple of times and think that the existing mechanisms provide enough flexibility.  First off, the values for 'namelist' are computed dynamically, even if the list of variable names is not.  Secondly, 'targetexpr' can be used to compute a dynamic URL including parameters.
Perhaps I misunderstand, but with only the above mechanisms, the only way to determine the parameters submitted at run time is to submit them on the query string, correct?  (I'm not considering hacks like encoding the parameter mapping in a single parameter.)  It's not, in general, desirable to force parameters to be submitted on the query string.  For whatever it's worth, I think it would be better to have some way to submit a dynamically determined collection of parameters in the HTTP request body.

Between these two mechanisms, we think that developers have enough flexibility so that 'namelistexpr' would be redundant.


Jim

From: www-voice-request@w3.org<mailto:www-voice-request@w3.org> [mailto:www-voice-request@w3.org] On Behalf Of Pierre.Wellner@inficon.com<mailto:Pierre.Wellner@inficon.com>
Sent: Tuesday, November 23, 2010 3:17 PM
To: www-voice@w3.org<mailto:www-voice@w3.org>
Subject: SCXML <send> namelistexpr

Most attributes of <send> come in both static and dynamic flavors.  For example, event expects a static string, while eventexpr is evaluated at runtime.  The current SCXML draft does not list a dynamic version of namelist.  Does there exist a way to dynamically construct a namelist for <send>?  If not, should we add namelistexpr to the list of possible <send> attributes?

Thanks,
Pierre


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