W3C home > Mailing lists > Public > www-forms@w3.org > December 2002

AW: Bindings to non-existing instance:data

From: Roman Huditsch <roman.huditsch@hico.com>
Date: Mon, 2 Dec 2002 13:21:24 +0100
Message-ID: <0C79A363CB0321418927D0CB1AD0403C095AA0@hicoetsrv000006.hico.local>
To: "Roland Merrick" <roland_merrick@uk.ibm.com>
Cc: <www-forms@w3.org>
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>
<xforms:input ref=" topicmap/topic/@id">
    <xforms:label>Topic ID:</xforms:label>
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 ?

-----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> 
        Subject:        Bindings to non-existing instance:data 



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?


Roman Huditsch (hRHU )
Developer .:. Information & Application Engineering
hico Informations- und Kommunikations-Management Gesellschaft m.b.H.
TechLab, Thomas A. Edison Straße 2.
A-7000 Eisenstadt / Austria
phone: +43/2682/704-61-73; fax: +43/2682/704-71-61-10
e-mail: roman.huditsch@hico.com
mobile: +43/664/4102715 

#### Roman Huditsch.vcf has been removed from this note on December 02 2002 by Roland Merrick 
Received on Monday, 2 December 2002 07:21:57 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 21:36:07 UTC