public
beta release of the commercial XML store and query product (codename
Qizx) planned for beginning of April.
Features:
Implements all features of the language, except Schema import and
validation (will be added when the W3C Recommendation will be
published), and a few functions related to type xs:duration.
most
recent syntax; all language constructs including type-related
(typeswitch, cast, treat as); module import; static checking feature
(basic types); Full Axis feature;
Extensions: serialization, SAX2 output, error handling,
text search, Java binding, Web Applications.
Executes successfully all the W3C use-cases, except STRONG which
uses schemas. [As of October 2003,
according to the Bumblebee
test harness. Results may be temporarily affected by instabilities
in specifications and use-cases. ]
Qizx/open is apparently the fastest open-source XML Query
implementation currently (for basic execution: the open-source
version cannot search indexed collections).