Dear colleagues,
I wrote a note about full validation of Atom feeds containing extensions
such as OpenSearch and Google Calendard. Hisashi Miyashita, my
co-author, implemented an NVDL validator for such validaiton.
Abstract
The RELAX NG schema in RFC 4287 (The Atom Syndication Format)
does not provide full validation of Atom feeds containing
extensions. Rather, this schema skips extension elements and
attributes, even when extension elements further contain Atom
feeds or entries. This document shows that ISO/IEC 19757-4
Namespace-based Validation Dispatching Language (NVDL for short)
allows full validation of atom feeds containing extensions. NVDL
decomposes atom feeds containing extensions into (1)
extension-free atom and (2) extensions so that (1) and (2) are
validated separately. As an example, an NVDL script for Google
Calendar is presented. This NVDL script reveals validation
errors of atom entries embedded in Google Calendar extension
elements.
This note is available at:
http://www.asahi-net.or.jp/~eb2m-mrt/atomextensions/atomextensions.html
The validator is available at:
http://www.asahi-net.or.jp/~eb2m-mrt/nvdl/SnRNV-1.0.zip
Cheers,
--
MURATA Makoto (FAMILY Given) <[EMAIL PROTECTED]>
