Subject: RE: [xsl] Get value from external file From: "Anders Svensson" <anders.svensson@xxxxxxxxxxx> Date: Wed, 26 Feb 2003 10:09:54 +0100 |
Mike, you're absolutely right, I meant to use the variable in the expression (it was late my time...:-) So it should have been: > In the xsl file: > <xsl:param name="varValue" select="document('varValue.xml')/varValueElement"/> > <xsl:apply-templates select="$varValue/> I'm not sure what the foo:evaluate thing does, I have to read about that. However, your suggestion with the modes was interesting, but I'm not sure it works for me, if I understand you correctly. As I see the example you wrote, it is a way to process the element differently depending on the profile. But I do not want to process the element differently at any time, all I want to do is to "filter out" all <ELEMENT> that don't have the attribute "Help='Yes'" (for instance). So I really don't want to have a set of four or five templates for the same element (one for each mode) when they are exactly the same... Regards, Anders -----Original Message----- From: Mike Brown [mailto:mike@xxxxxxxx] Sent: den 26 februari 2003 00:11 To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx Subject: Re: [xsl] Get value from external file Anders Svensson wrote: > I have an xsl file which formats xml files into html, online help etc, and > the xml has attributes at certain elements to "profile" the documents into > different versions (different formats, users, etc). The xsl creates the > profiled versions by selecting elements by their profile attributes. For > example an element can look like this: > > <ELEMENT Help='Yes'> > > The xsl can then select these particular elements by select statements such > as <xsl:apply-templates select="ELEMENT[Help='Yes']/>. > > BUT, and here's the question: I need to be able to place the profiling > select value in a separate file so I can keep the xsl intact, rather than > changing it for each version transformation. That way I only need to change > the (xml)file containing the value, and fetch it using a variable. (E.g.) > > I would like to be able to do something like this: > xml document containing the value: > <varValueElement>ELEMENT[Help='Yes']</varValueElement> You probably meant ELEMENT[@Help='Yes'] because you are talking about the attribute named Help, not the child element named Help. > In the xsl file: > <xsl:param name="varValue" select="document('varValue.xml')/varValueElement"/> > <xsl:apply-templates select="ELEMENT[Help='Yes']/> What are you trying to do here? Setting $varValue has no bearing on the behavior of that paticular apply-templates instruction. Perhaps you meant something like <xsl:apply-templates select="foo:evaluate($varValue)"/> where foo is a prefix bound to the namespace for an extension function for dynamic evaluation of strings as XPath expressions (e.g., EXSLT's dyn:evaluate())? I would approach the problem differently, though. Have a control.xml that says what profile to generate: <info> <profile>help</profile> </info> Then in your stylesheet go get that data, and make a pass through the source tree using a mode depending on what it was: <xsl:template match="/"> <xsl:variable name="profile" select="document('control.xml')/info/profile"/> <xsl:choose> <xsl:when test="$profile='help'"> <xsl:apply-templates mode="help"/> </xsl:when> <xsl:when test="$profile='apidocs'"> <xsl:apply-templates mode="apidocs"/> </xsl:when> <xsl:when test="$profile='mktg'"> <xsl:apply-templates mode="mktg"/> </xsl:when> <xsl:otherwise> <xsl:message>unknown profile '<xsl:value-of select="$profile"/>'</xsl:message> </xsl:otherwise> </xsl:choose> </xsl:template> <!-- note: there are built-in templates matching "*" for each mode; they just contain the instruction <xsl:apply-templates mode="(the same mode"/>, resulting in the selection and processing of that element's children. --> <xsl:template match="ELEMENT[@Help='Yes']" mode="help"> ... </xsl:template> <xsl:template match="ELEMENT[@APIDocs='Yes']" mode="apidocs"> ... </xsl:template> <xsl:template match="ELEMENT[@MarketingDrivel='Yes']" mode="mktg"> ... </xsl:template> Mike -- Mike J. Brown | http://skew.org/~mike/resume/ Denver, CO, USA | http://skew.org/xml/ XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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