W3C home > Mailing lists > Public > public-forms@w3.org > March 2009

target attribute, Re: RDFa attributes in XForms [was Re: Draft minutes for 2009-03-11]

From: John Boyer <boyerj@ca.ibm.com>
Date: Tue, 17 Mar 2009 18:51:39 -0700
To: Mark Birbeck <mark.birbeck@webbackplane.com>
Cc: public-forms@w3.org, "public-rdfa@w3.org" <public-rdfa@w3.org>
Message-ID: <OFEC2A1C06.5BD2D970-ON8825757D.0009879A-8825757D.000A2812@ca.ibm.com>
Thanks Mark, this is good for @resource.

What about @target?
submission with replace="instance"|"text" uses target="string" where 
string is an xpath expression indicating a data node whose 
entirety|content is replaced.

In the future, I believe we had hoped to use @target with replace="all" 
submissions too.  Some thought would have to go into it, but the result of 
submission could replace some div or it could show up in a new window, and 
@target seems like it will figure into those operations somehow.  I 
suspect this is more like  the way you are using target now in xhtml2, but 
we still have the problem of how it is used when we're doing data 

Any further thoughts there?

John M. Boyer, Ph.D.
STSM, Interactive Documents and Web 2.0 Applications
Chair, W3C Forms Working Group
Workplace, Portal and Collaboration Software
IBM Victoria Software Lab
E-Mail: boyerj@ca.ibm.com 

Blog: http://www.ibm.com/developerworks/blogs/page/JohnBoyer
Blog RSS feed: 

Mark Birbeck <mark.birbeck@webbackplane.com>
"public-rdfa@w3.org" <public-rdfa@w3.org>
03/11/2009 02:17 PM
RDFa attributes in XForms [was Re: Draft minutes for 2009-03-11]

Hello all,

(CCing the RDFa list for their interest, since some people may not be
aware that there is interest in the XForms community in ensuring that
XForms and RDFa play nicely together.)

> Steven Pemberton: And there was the resource attribute; we wish we'd 
> the thinking for RDFa. It's an attribute we introduced in XForms as a
> consistency with the child element; it's functionality is the same as 
> if I'm not mistaken.

We did do the thinking. :)

When someone suggested @resource on submission we debated whether it
would clash with RDFa, and I said it wouldn't at the semantic level.
Shane said it would clash at the DTD/schema level, but said that he
could probably work around that.

> John Boyer: Same a @action
> Steven Pemberton: So one option would be for us in XForms 1.1 to XHTML 2 
> say that you have to use action, not resource.
> John Boyer: What is the meaning of the resource attribute from RDF?
> Steven Pemberton: RDFa. It specifies the object of a relation. It's 
> to href but it's not the intention that it's clickable. It specifies a 
> that's part of a relationship.

Right...although to clarify, we don't define *any* behaviour in RDFa.
If a browser wanted to make it clickable that would be up to them,
i.e., we don't say 'this attribute must never be clickable', because
we have no right to.

> Leigh Klotz: Didn't Mark say that resource was what the submission was 
> anyway?

Yes. See below.

> Or are you saying that since @resource is what makes it "clickable"
> it's not OK?
> Steven Pemberton: I see. I thnk it's ok to use @resource then.
> John Boyer: We also have it on the load action. It's not exactly UI
> clickable but it's like submission; you click something that invokes it. 
> instance you might say it's implicitly clicked.
> Steven Pemberton: Since they both have the same datatype, the problems 
> much less.

Right. The key thing is that the semantic aspect of RDFa is meant to
reflect real live data in a document, by which I mean that you should
be able to reuse markup that you would ordinarily have put into your
document anyway, in a semantic way.

So with RDFa you can 'reuse' inline text:

  <span property="dcterms:title">My great American novel</span>

you can 'reuse' a navigable link that you have made with another document:

  <a rel="license" href="cc.html">click here for the license</a>

and you can 'reuse' a link that you have made with an embedded document:

  <img src="my-photo.png" rel="license" resource="cc.html" />

All we're doing with XForms is saying that you can 'reuse' @resource
too. So if an author creates this:

  <xf:load resource="next-page.html" />

then they have in effect established a relationship between their form
and another document. All RDFa brings to the table is that they can
'reuse' this resource referred to, and be more precise about what
exactly the nature of the relationship is; so an author could add
@rel, like this:

  <xf:load rel="next" resource="next-page.html" />

Now an RDFa parser would 'spot' this relationship, and correctly decode 



Mark Birbeck, webBackplane



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Received on Wednesday, 18 March 2009 01:51:36 UTC

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