Subject: Re: [xsl] [XPath 3.0] Can anonymous functions return markup? From: Olivier JEULIN <olivier.jeulin@xxxxxxxxx> Date: Tue, 18 Dec 2012 11:10:00 +0100 |
Hi Dimitre, you are calling the ghost of future XMas^H^HL developers upon you with this solution ;-) I clearly heard all the web_developersb" saying "Ohhh! Finally! I can generate XML in a sensible way". 2012/12/17 Dimitre Novatchev <dnovatchev@xxxxxxxxx>: > Now, this is a pure XPath way :) : > > <xsl:stylesheet version="3.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" > xmlns:xs="http://www.w3.org/2001/XMLSchema" > xmlns:my="my:my" exclude-result-prefixes="my xs"> > <xsl:output omit-xml-declaration="yes" indent="yes"/> > > <xsl:template match="/"> > <xsl:sequence select= > "let $print := function () as element() > { > parse-xml('<hello>World</hello>')/* > } > return ($print()) > "/> > </xsl:template> > </xsl:stylesheet> > > > On Sun, Dec 16, 2012 at 3:38 PM, Dimitre Novatchev <dnovatchev@xxxxxxxxx> wrote: >> No, there are no standard XPath ways to create a new node. >> >> But, given a function in the context of the XPath evaluator, this is possible: >> >> <xsl:stylesheet version="3.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >> xmlns:xs="http://www.w3.org/2001/XMLSchema" >> xmlns:my="my:my" exclude-result-prefixes="my xs"> >> <xsl:output omit-xml-declaration="yes" indent="yes"/> >> >> <xsl:template match="/"> >> <xsl:sequence select= >> "let $print := function () as element() >> { >> my:element('Hello', (), 'World') >> } >> return ($print()) >> "/> >> </xsl:template> >> >> <xsl:function name="my:element" as="element()"> >> <xsl:param name="pName" as="xs:string"/> >> <xsl:param name="pAttributes" as="attribute()*"/> >> <xsl:param name="pText" as="xs:string?"/> >> >> <xsl:element name="{$pName}"> >> <xsl:sequence select="$pAttributes"/> >> <xsl:sequence select="$pText"/> >> </xsl:element> >> </xsl:function> >> </xsl:stylesheet> >> >> produces: >> >> <Hello>World</Hello> >> >> Similarly, the function my:element() can be written in XQuery. >> >> >> Cheers, >> >> Dimitre >> >> On Sun, Dec 16, 2012 at 2:07 PM, Costello, Roger L. <costello@xxxxxxxxx> wrote: >>> Hi Folks, >>> >>> I want to create an anonymous XPath function that returns markup. For example: >>> >>> let $print := function () >>> { >>> <hello>World</hello> >>> } >>> return ($print()) >>> >>> I tried embedding that XPath within an xsl:sequence element: >>> >>> <xsl:sequence select=" >>> let $print := function () >>> { >>> <hello>World</hello> >>> } >>> return ($print()) >>> " /> >>> >>> but that produced this error message: >>> >>> The value of attribute "select" associated with an element >>> type "xsl:sequence" must not contain the '<' character. >>> >>> So I escaped the '<' characters: >>> >>> <xsl:sequence select=" >>> let $print := function () >>> { >>> <hello>World</hello> >>> } >>> return ($print()) >>> " /> >>> >>> and that produced this error message: >>> >>> Unexpected token "<" in path expression >>> >>> Is it possible to create an anonymous function that returns markup? >>> >>> If yes, how? >>> >>> /Roger >>> > > > > -- > Cheers, > Dimitre Novatchev > --------------------------------------- > Truly great madness cannot be achieved without significant intelligence. > --------------------------------------- > To invent, you need a good imagination and a pile of junk > ------------------------------------- > Never fight an inanimate object > ------------------------------------- > To avoid situations in which you might make mistakes may be the > biggest mistake of all > ------------------------------------ > Quality means doing it right when no one is looking. > ------------------------------------- > You've achieved success in your field when you don't know whether what > you're doing is work or play > ------------------------------------- > Facts do not cease to exist because they are ignored. > ------------------------------------- > Typing monkeys will write all Shakespeare's works in 200yrs.Will they > write all patents, too? :) > ------------------------------------- > I finally figured out the only reason to be alive is to enjoy it. > -- O. J.
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