Subject: Re: [xsl] Tokenized values From: Jeni Tennison <mail@xxxxxxxxxxxxxxxx> Date: Wed, 25 Jul 2001 10:58:03 +0100 |
Hi Adam, > According to the XML Spec there are several tokenized types (IDREFS, > ENTITIES, NMTOKENS > http://www.w3.org/TR/2000/WD-xml-2e-20000814#NT-TokenizedType) which > are valid for attribute values. How would one handle these values in > XSL? I'm in the middle of building a recursive named template to > parse out the values but then when I'm done, all I get is a series > of result trees. > > Is there a reason why XSL doesn't include something like > > <xsl:variable name="values" select="split(@something)" /> > <xsl:apply-templates select="$values/text()" /> > > It seems that since this functionality handles a common XML > situation (the HTML class attribute), this should be built in to XSL > and not an extention. In the XML Schema world these are known as list data types. Requirement 4.4 of XPath 2.0 reads: 4.4 Should Add List Data Type to the Type System of the Expression Language XML Schema allows the definition of simple types derived by list, including lists of unions of non-list simple types. XPath 2.0 SHOULD support an ordered list of simple-typed values. So you can probably expect support for handling these kinds of things with a function come XPath 2.0/XSLT 2.0. In the short term, there is one function that may help, namely the id() function, which can take a space-separated string and locate the elements with those IDs in a document. However you have to jump through some hoops to use it in any useful way, and it's often easier to use an extension function (e.g. exsl:tokenize(), saxon:tokenize(), xalan:tokenize()) or write a recursive template that either acts on each of the values as it finds them or returns a result tree fragment that you convert to a node set using a node-set extension function (you can use the one at http://www.exslt.org/str/functions/tokenize/str.tokenize.template.xsl if you like). Cheers, Jeni --- Jeni Tennison http://www.jenitennison.com/ XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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