Re: writing to xpath string result

Brian Ryner wrote:
> Hi,
> 
> One thing I've found that would be really helpful for xforms is, given 
> data like:
> 
> <foo>
>   <bar name="blah">text</bar>
> </foo>
> 
> and xforms input controls bound to:
> 
> /foo/bar
> and
> /foo/bar@name
> 
> to be able to evaluate that xpath expression and write new data to the 
> resulting text node or attribute, without having to figure out which one 
> it is (since xpath can do that anyway).  Basically, to be able to set 
> the stringValue attribute on the result.  The semantics of this, at 
> least for my purposes, would be pretty straightforward... it would only 
> need to work for a single-node result, and if the expression points to 
> the text node child of an element, it can blow away any existing 
> children of the element and replace them with a new text node.
> 
> Any thoughts on this?
> 

I have been thinking about this a bit more and I don't think that you 
need anything special at all, just evaluate to a nodeset, get the first 
node and set your content. You may want to have your own little helper 
function for this, if it pops up at a few places, but I don't see a 
requirement to hook this up to the xpath engine itself.

Axel