Re: [Simple] [Technical Errata Reported] RFC5261 (3477)
Bjoern Hoehrmann <derhoermi@gmx.net> Tue, 05 February 2013 11:17 UTC
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From: Bjoern Hoehrmann <derhoermi@gmx.net>
To: RFC Errata System <rfc-editor@rfc-editor.org>
Date: Tue, 05 Feb 2013 12:16:58 +0100
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Cc: dret@berkeley.edu, jari.urpalainen@nokia.com, simple@ietf.org, hisham.khartabil@gmail.com
Subject: Re: [Simple] [Technical Errata Reported] RFC5261 (3477)
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* RFC Errata System wrote: >Original Text >------------- >In XPath 2.0, a "bar" selector >not only matches an unqualified <bar> element, but also matches a >qualified <bar> element that is in scope of a default namespace >declaration. In contrast, in this specification, a selector without >a prefix only matches one element, and it may match an element with >or without a prefix but only if the namespace it's qualified with (or >none) is an exact match. >Notes >----- >The original text is not easy to understand, but seems to assume that >an unprefixed name in XPath 2.0 matches both unprefixed names, and >prefixed ones that have the same namespace than the default namespace of >the XPath static context. This is not the case: Matching depends on how >the "default element/type namespace" of the XPath static context is >defined, and then matches either namespace-less elements, or those in >the "default element/type namespace", but never both. This context, >however, is defined by the XPath itself, not by the document. Thus, it >can be set externally and could be set to the diff document's default >namespace (if there is one). In that case, XPath 2.0 can be used to >evaluate XML Patch selectors. Indeed, see <http://www.w3.org/TR/xpath20/#node-tests>, 3rd paragraph. (I do note that this is not the only difference between XPath 1.0 and XPath 2.0, so the conclusion that then XPath 2.0 can be used to evalu- ate XML Patch selectors is not necessarily correct, especially if it cannot be assumed that defaults like "Default element/type namespace" cannot be assumed to be chosen to maximise compatibility. But that is out of scope of the Original Text this item is concerned with.) -- Björn Höhrmann · mailto:bjoern@hoehrmann.de · http://bjoern.hoehrmann.de Am Badedeich 7 · Telefon: +49(0)160/4415681 · http://www.bjoernsworld.de 25899 Dagebüll · PGP Pub. KeyID: 0xA4357E78 · http://www.websitedev.de/
- [Simple] [Technical Errata Reported] RFC5261 (347… RFC Errata System
- Re: [Simple] [Technical Errata Reported] RFC5261 … Bjoern Hoehrmann
- Re: [Simple] [Technical Errata Reported] RFC5261 … Erik Wilde