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Re: CCXML "event" attribute in <move> element - ISSUE-111

From: RJ Auburn <rj@voxeo.com>
Date: Thu, 13 Dec 2007 10:17:29 -0500
Cc: Hrvoje Nezic <hrvoje.nezic@envox-lab.hr>, www-voice@w3.org, W3C Voice Browser Working Group <w3c-voice-wg@w3.org>
Message-Id: <3C50351C-E41E-443E-A4DE-0B084F8C43C2@voxeo.com>
To: RJ Auburn <rj@voxeo.com>

The exact semantics around <move> can indeed be complex, as the issue
that you raise suggests.  However, the scenario that you described is
not believed to be inconsistent with the CCXML specification.  The
'connnection.connected' event signifies the transition of the associated
Connection object to the CONNECTED state.  When the Connection is moved
with this event to a different session, it is not equivalent to a second
'connection.connected' event on the same Connection object (thus is not
equivalent to a CONNECTED --> CONNECTED transition).  Rather, the
processing of the 'connection.connected' event signifying an ALERTING
--> CONNECTED transition or a PROGRESSING --> CONNECTED transition is
just being handled in a different session than the original target for
the event.

In addition, it is worth noting that the Connection object being moved
will not be visible to the target session until the <move> occurs; thus,
even from the perspective of the move target, it does not see the
Connection object in the already-CONNECTED state until it processes the
'connection.connected' event.
Please let us know if this addresses your question / concern. If you  
think further clarification is needed please let us know within 3  
weeks otherwise we will consider this issue resolved.

Best regards,

	RJ Auburn

RJ Auburn
CTO, Voxeo Corporation
Chair, Editor and Chair, CCXML, VBWG, W3C

On Feb 8, 2007, at 10:39 :02, RJ Auburn wrote:

> This is being tracked as ISSUE-111.
> 	RJ
> ---
> RJ Auburn
> CTO, Voxeo Corporation
> tel:+1-407-418-1800
> On Dec 22, 2006, at 11:30 AM, Hrvoje Nezic wrote:
>> Dear group,
>> I have a question about "event" attribute  in <move> element.
>> The specification says about this attribute:
>> "The event source from which the event object originated, if any,  
>> must be moved to the target session. The event must also be sent to  
>> the target session to provide a notification."
>> If I understood it well, this event must be a connection or dialog  
>> event, like connection.alerting, connection.connected,  
>> dialog.started, etc:
>> <transition event="connection.connected" name="evt" >
>>    <move session_id="target_session_id" event="evt" />
>>    ...
>> </transition>
>> In the above case, the connection.connected event is handled, and  
>> it will be sent to another session to be handled again. This seems  
>> strange to me. When the above transition starts, the connection  
>> object will be in CONNECTED state.
>> Before the connection.connected event is being handled in another  
>> session, the object will be in wrong state, because according to  
>> the specification there is no transition from CONNECTED when  
>> current event is connection.connected.
>> Another problem is using evt.connection object in the same  
>> transition after <move>, while it is concurrently being moved to  
>> another session.
>> I would like to know if my understanding is correct.
Received on Thursday, 13 December 2007 15:18:27 UTC

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