Re: AW: Bindings to non-existing instance:data

Greetings, I'm afraid the answer is a short one, "no".

Regards, Roland




"Roman Huditsch" <roman.huditsch@hico.com>
02/12/2002 12:21

 
        To:     Roland Merrick/UK/IBM@IBMGB
        cc:     <www-forms@w3.org>
        Subject:        AW: Bindings to non-existing instance:data

 



Hello,
 
What  I want to do is the following: 
I  would like to define some input field like:
 
<xforms:input ref="topicmap/topic/topicName">
    <xforms:label>Topic  Name:</xforms:label>
</xform:input>
 
<xforms:input ref="topicmap/topic/@id">
    <xforms:label>Topic  ID:</xforms:label>
</xform:input>
 
....
 
Is  it possible to define somehow that as soon as the user has done some 
input on  these fields the according elements (or attributes) in the 
instance are created 
 
wbr,
Roman
-----Ursprüngliche Nachricht-----
Von: Roland Merrick  [mailto:roland_merrick@uk.ibm.com]
Gesendet: Montag, 2. Dezember  2002 12:07
An: Roman Huditsch
Cc:  www-forms@w3.org
Betreff: Re: Bindings to non-existing  instance:data



Greetings  Roman, the section describing the xforms-form-control-initialize Event  describes what happens. 
[  http://www.w3.org/TR/xforms/slice4.html#evt-formControlInitialize ] 

There are two basic situations which can  lead to there being no instance 
data node for the UI element to bind  to. 

1) No <instance> was  supplied in which case an instance data node will be 
created when the UI  element is initialised. 
2) There is an  <instance> but there is nothing for the UI element to bind 
to, in this  case the UI control should behave as if it was bound to a 
non-relevant  node.

Regards, Roland 




"Roman Huditsch"  <roman.huditsch@hico.com> 
Sent by: www-forms-request@w3.org 

02/12/2002 10:25 

        
        To:         <www-forms@w3.org> 
        cc:          
         Subject:        Bindings to non-existing  instance:data 

        


Hello,

I have quite a short  question. I thought that I read it somewhere in the 
spec but I couldn't find  the passage again.
What happens if I refer from a xform control to an  element in my 
xforms:instance, which doesn't yet exist? Is it (the instance 
element)created when the user fills in the form  control?

Or do I have to define a trigger,  whichs creates the needed instance 
elements before?

wbr,
Roman

Roman Huditsch  (hRHU )
Developer .:. Information & Application  Engineering
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e-mail:  roman.huditsch@hico.com
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#### Roman Huditsch.vcf has been  removed from this note on December 02 
2002 by Roland Merrick