- From: Innovimax W3C <innovimax+w3c@gmail.com>
- Date: Wed, 23 May 2012 13:26:28 +0200
- To: Norman Walsh <ndw@nwalsh.com>
- Cc: public-xml-processing-model-wg@w3.org
Ok good Few questions : 1) Why two elements ? Why not just a <p:report> with an optional test attribute 2) What is the context of the test : the current sequence of document ? 3) With respect to variable, we already have the p:template behaviour, so we could just say that the content of <p:report> is evaluated as if it was <p:template> ? Mohamed On Wed, May 23, 2012 at 12:51 PM, Norman Walsh <ndw@nwalsh.com> wrote: > Good morning, > > Here's a sketch for extending p:log. Change the content model as follows: > > <p:log > port = NCName > href? = anyURI> > (p:assert | p:message)* > </p:log> > > Where p:message is: > > <p:message> text </p:message> > > and p:assert is: > > <p:assert > test = XPathExpression > text </p:assert> > > Extend the semantics of p:log as follows: in addition to logging the > document, each p:message and p:assert is evaluated once for each document > in the order they appear as children of p:log. > > A p:message simply outputs its text content as a message. That could be > to STDERR or to a dialog box or a log file, implementation defined. > > A p:assert evaluates the effective boolean value of the test expression. > If the expression is true, nothing happens. If the expression is false, > the text content of the message is output per p:message and an exception > is raised. (Open question: should it be possible to catch that exception > in a p:try; probably.) > > I think this would all be much more useful if it was possible to output > something about the state of the system. I propose that variable references > are interpolated in p:message/p:assert messages. We could go even further > and say that the text is an XPath expression, but that will be a little > weird as you'll have to quote strings and use concat a lot. > > And, if we're going to interpolate variable references, I propose that > we define a few magic ones: > > $p:uri - the base URI of the document being logged > $p:count - the number of the document being logged > > Maybe more. We should probably think about what makes the most sense here, > expression or interpolation. I can see both sides, I think. > > Be seeing you, > norm > > -- > Norman Walsh > Lead Engineer > MarkLogic Corporation > Phone: +1 413 624 6676 > www.marklogic.com -- Innovimax SARL Consulting, Training & XML Development 9, impasse des Orteaux 75020 Paris Tel : +33 9 52 475787 Fax : +33 1 4356 1746 http://www.innovimax.fr RCS Paris 488.018.631 SARL au capital de 10.000 €
Received on Wednesday, 23 May 2012 11:27:03 UTC