Re: [Xsltforms-support] Adding optional elements to an XML document

[Conal T. <con...@ve...>]

Hi László!

If you supply values for @at and @position, you can override the default 
behaviour of xf:insert to control where the insertion is made. The 
relevant documentation is here: http://www.w3.org/TR/xforms11/#action-insert

I have done this before but I don't have the worked example to hand; I 
hope this is correct though:

If you want your insertion to be made after any <ch1> and <ch2> 
elements, you might use @at="count(ch1) + count(ch2)" and 
@position="after". Or you could insert before any <ch4> or <ch5> 
elements, using @at="size() - count(ch4) - count(ch5)" and 
@position="before".

I hope that helps!

Conal


On 05/06/12 19:21, sores wrote:
> Hi All,
>
> When inserting new elements into an empty repeat the context attribute
> has to be used to define the insert location. By default the inserted
> element will be positioned after the last child of the context nodeset.
> Is there a way to control this behaviour?
> (for example an axis xpath attribute somewhere that would define the
> insertion point in the context node)
>
> I am trying to build web interfaces for fairly complex XSD schema
> defined objects with lots of optional elements. In an XML instance these
> optional elements may not be present. When someone starts to add them
> they appeare in a wrong location and make XSD validation fail. Having
> empty optional elements in the XML instances would work, but | wanted to
> avoid this.
>
> An easy way to solve the problem is reordering the elements with an xsl
> transformation. Before doing so I would like to know if I am missing
> something obvious.
>
> Best regards,
>
> László Sőrés


-- 
Conal Tuohy
eResearch Business Analyst
Victorian eResearch Strategic Initiative
+61-466324297