21025 2013-02-17 11:00:44 +0000 [XQ 3.0] copying unused namespace declarations 2013-05-09 19:43:13 +0000 1 1 1 Unclassified XPath / XQuery / XSLT XQuery 3.0 Working drafts PC Linux RESOLVED FIXED P2 normal --- 1 nikolay.ognyanov jonathan.robie mike public-qt-comments oldest_to_newest 83236 0 nikolay.ognyanov 2013-02-17 11:00:44 +0000 It seems to me that the draft specs do not provide a way to copy "unused" (i.e. such that no element in the documet resides in those) namespace declarations from a processed xml document. There are however important use cases where such feature is needed. For example xml schema documents often require declaration of default namespace even though the elements of the schema itself all reside in the xs: namespace. The namespace axis in combination with computed namespace constructors would solve this but namespace axix is explicitely not supported. Am I missing an alternative solution or is the use case truly not supported? If so then I would advocate strongly for its support since processing of xml schema documents is hardly an insignificant use case. Regards Nikolay P.S.: For examples of xml schemas where copying of the default namespace is mandatory you can look e.g. at http://www.opentravel.org/Specifications/Default.aspx 83237 1 mike 2013-02-17 11:18:31 +0000 Personal response: I agree there are many use cases where this would be convenient, and indeed where the namespace axis would be convenient. However, there is a workaround in 3.0 (unlike 1.0) which will have to do for now: you can use in-scope-prefixes($e)!namespace-node(){.}{namespace-uri-for-prefix($e,.)} to "reconstruct" the namespace nodes for element $e that you would have found using the namespace axis if it were available. 83238 2 nikolay.ognyanov 2013-02-17 12:33:39 +0000 Mea culpa! Your suggestion works (except for the order of arguments of namespace-uri-for-prefix) and I have missed this workaround. I am afraid though that many other users of xquery 3.0 will miss it too. Therefore I would like to modify this filing into a suggestion to improve the draft documentation to point out more explicitely what alternatives to the namespace axis are provided. Regards Nikolay 84635 3 jonathan.robie 2013-03-19 17:08:31 +0000 (In reply to comment #1) > in-scope-prefixes($e)!namespace-node(){.}{namespace-uri-for-prefix($e,.)} I was confused by "namespace-node()" in the above example. The correct syntax is: in-scope-prefixes($e) ! namespace {namespace-uri-for-prefix($e,.)} {.} This is editorial; I do think an example would be helpful. 87511 4 jonathan.robie 2013-05-09 19:43:13 +0000 I just checked in the example for the XQuery specification.