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RE: Con Call and XPointer/XPath

From: Joseph M. Reagle Jr. <reagle@w3.org>
Date: Thu, 16 Sep 1999 13:23:48 -0400
Message-Id: <>
To: "John Boyer" <jboyer@uwi.com>
Cc: <w3c-ietf-xmldsig@w3.org>, "Dan Connolly" <connolly@w3.org>
At 09:30 99/09/14 -0700, John Boyer wrote:
 >The RD says that partial document is a requirement, and an implied
 >requirement is security, but since we also have certain timeline
 >requirements, so what you're saying is that some of the requirements will
 >not be required in order to meet the timelines.  We could do partial
 >document, but not with high security, or we could do high security, but
 >partial document, or we could do both but possibly at the cost of the

Its all a balancing act. My philosophy is to always (or as soon as possible)
have a spec that can be implemented but with lots of simple options,
defaults and stubs in there. Sort of like ship early and often.

 >Why remove it when it can be demonstrated that we simply need a way to
 >process and, or and not logic, and keep track of where in a tree we are,
 >of which are similar to algorithms studied in second or third semester data
 >structures.  We all do the little infix math processors and trees at around
 >that time.

Again, my default is to not justify removal, but justify inclusion.
 >Secondly, I think it is fairly well understood.  XPath doesn't come out and
 >say so because I think they assumed it was obvious, but the entity refs
 >should obviously be resolved during the parsing of the document, so the
 >xpointer would refer to the second <e/>.

I'd agree with that, so it does implicitly get filtered through InfoSet/DOM.
Doing a string based perl XPtr locator would not work (or you have to
specify the c14n with it as well.)

Joseph Reagle Jr.   
Policy Analyst           mailto:reagle@w3.org
XML-Signature Co-Chair   http://w3.org/People/Reagle/
Received on Thursday, 16 September 1999 13:38:33 UTC

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