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> Lesson Learned: Implicit on the root element of every XML document is this namespace declaration: > <root xmlns:xml="http://www.w3.org/XML/1998/namespace"> 1) Not sure about "Implicit on the root element" (xpath++ from [1]): $ xpath++ "count(//namespace::*)" nlist.xml 21 $ xpath++ "count(/namespace::*)" nlist.xml 0 $ xpath++ "count(//*)" nlist.xml 7 $ xpath++ "count(/|//*)" nlist.xml 8 $ xpath++ "count(/*/namespace::*)" nlist.xml 3 $ 2) The implicit xml namespace declaration was the reason for " and name()!='xml' " in this XML serialization ([2]). <xsl:for-each select="namespace::*"> <xsl:if test="not(.=../../namespace::*) and name()!='xml'"> <xsl:value-of select= "concat(' xmlns', substring(':',1 div boolean(name ())), name(),'="',.,'"')" /> </xsl:if> </xsl:for-each> [1] https://www.ibm.com/developerworks/forums/thread.jspa?messageID=14455521� [2] http://www.biglist.com/lists/lists.mulberrytech.com/xsl-list/archives/201008/msg00186.html Mit besten Gruessen / Best wishes, Hermann Stamm-Wilbrandt Developer, XML Compiler, L3 WebSphere DataPower SOA Appliances ---------------------------------------------------------------------- IBM Deutschland Research & Development GmbH Vorsitzender des Aufsichtsrats: Martin Jetter Geschaeftsfuehrung: Dirk Wittkopp Sitz der Gesellschaft: Boeblingen Registergericht: Amtsgericht Stuttgart, HRB 243294 From: "Costello, Roger L." <costello@mitre.org> To: "xml-dev@lists.xml.org" <xml-dev@lists.xml.org> Date: 08/30/2010 08:00 PM Subject: Quiz: how many namespaces are in scope? Hi Folks, Consider this XML document: <?xml version="1.0"?> <N1:NumberList xmlns:N1="http://www.example1.org" xmlns:N2=" http://www.example2.org "> <Number>23</Number> <Number>41</Number> <Number>70</Number> <Number>103</Number> <Number>99</Number> <Number>6</Number> </N1:NumberList> For the first child element: <Number>23</Number> what namespaces are in scope? I created an XSLT template to output the <Number> element's in-scope namespaces: ------------------------------------------- <xsl:template match="*"> <xsl:for-each select="namespace::*"> <xsl:value-of select="."/></p> </xsl:for-each> </xsl:template> ------------------------------------------- Here is the output: http://www.w3.org/XML/1998/namespace http://www.example1.org http://www.example2.org There are three (3) in-scope namespaces. Lesson Learned: Implicit on the root element of every XML document is this namespace declaration: <root xmlns:xml="http://www.w3.org/XML/1998/namespace"> NOTE: it is illegal to explicitly declare the xml namespace. The xml namespace is built into every XML application. Since the xml namespace is implicitly declared in every XML document, you can immediately use the xml:lang attribute and the xml:space attribute, e.g., <movie> <title>The Laughing Cow</title> <title xml:lang="fr">La Vache Qui Rit</title> </movie> Here is an XSLT template to output the in-scope namespaces and their prefixes: ------------------------------------------- <xsl:template match="*"> <xsl:for-each select="namespace::*"> Namespace in scope = <xsl:value-of select="."/> Namespace prefix = <xsl:value-of select="name(.)"/> </xsl:for-each> </xsl:template> ------------------------------------------- Here is the output: Namespace in scope = http://www.w3.org/XML/1998/namespace Namespace prefix = xml Namespace in scope = http://www.example1.org Namespace prefix = N1 Namespace in scope = http://www.example2.org Namespace prefix = N2 QUESTIONS 1. Have I correctly analyzed the situation (regarding in-scope namespaces)? 2. What else would you add? /Roger _______________________________________________________________________ XML-DEV is a publicly archived, unmoderated list hosted by OASIS to support XML implementation and development. To minimize spam in the archives, you must subscribe before posting. [Un]Subscribe/change address: http://www.oasis-open.org/mlmanage/ Or unsubscribe: xml-dev-unsubscribe@lists.xml.org subscribe: xml-dev-subscribe@lists.xml.org List archive: http://lists.xml.org/archives/xml-dev/ List Guidelines: http://www.oasis-open.org/maillists/guidelines.php
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