[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Why doesn't <xsl:copy> copy xmlns=""?
At 2012-11-17 13:39 +0000, you wrote:
I want to do an identity transform of this: ---------------------------------------------------------------------------- <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.bar.com" xmlns:bar="http://www.bar.com" xmlns="" elementFormDefault="qualified"> I see it, but it is redundant. That isn't a namespace declaration, it is a namespace "undeclaration". This concept exists in namespaces 1.0 but the verb to "undeclare" is actually worded in namespaces 1.1: http://www.w3.org/TR/2006/REC-xml-names11-20060816/#changes So in XML 1.0 an "undeclaration" *removes* a namespace declaration for the default namespace, it does not add an explicit declaration of nothing. Here is the output from transforming the <xs:schema> with my code: ---------------------------------------------------------------------------- <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.bar.com" xmlns:bar="http://www.bar.com" elementFormDefault="qualified"> And because the default namespace already is not declared, it is identical (from an information set perspective) to your original. What happened to the default namespace declaration? The default namespace "undeclaration" wasn't needed and so was ignored. Questions: Because xmlns="" is not a namespace declaration. It is a directive to remove the default namespace declaration from the information set. 2. What change can I make to my code to ensure that it copies over the default namespace declaration? You can already be assured that there is no declaration for the default namespace because the processor would have undeclared it if it were necessary. Thus, you can ensure that the information is correct (not that the declarations are the same) because of the namespace fix-up processes of XML serialization. I hope this helps. . . . . . . . . . . Ken -- Contact us for world-wide XML consulting and instructor-led training Free 5-hour lecture: http://www.CraneSoftwrights.com/links/udemy.htm Crane Softwrights Ltd. http://www.CraneSoftwrights.com/s/ G. Ken Holman mailto:gkholman@xxxxxxxxxxxxxxxxxxxx Google+ profile: https://plus.google.com/116832879756988317389/about Legal business disclaimers: http://www.CraneSoftwrights.com/legal
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