Subject: Re: [xsl] XML transformation to RDF with XSLT help From: "Eric Bréchemier" <eric.brechemier@xxxxxxxxx> Date: Wed, 3 May 2006 09:33:51 +0200 |
First, thank you for the details of your xml input, expected output, and current status of your xslt stylesheet. You should just add what gets you stuck, which would help people understand your problem quicker :)
The typical way of handling three different outputs depending on different inputs is to write a different template rule (xsl:template) for each one, with three different corresponding XPath expressions. In your case, just translate your requirements to XSLT:
I need to transform this to rdf like this With xsi:type="dcterms:URI" <rdf:Description> <gemq:teachingMethods rdf:resource="http://purl.org/gem/instance/GEM-TM/#PeerTutoring"/> </rdf:Description>
<xsl:template match="gemq:teachingMethods[@xsi:type='dcterms:URI']"> <rdf:Description> <gemq:teachingMethods rdf:resource="{normalize-space(.)}"/> </rdf:Description> </xsl:template>
With xsi:type="gemq:GEM-TM" <rdf:Description> <gemq:teachingMethods> <gemq:GEM-TM> <rdf:value>Thematic approach</rdf:value> <rdfs:label>Thematic approach</rdfs:label> </gemq:GEM-TM> </gemq:teachingMethods> </rdf:Description>
<xsl:template match="gemq:teachingMethods[@xsi:type='gemq:GEM-TM']"> <rdf:Description> <gemq:teachingMethods> <gemq:GEM-TM> <rdf:value>Thematic approach</rdf:value> <rdfs:label>Thematic approach</rdfs:label> </gemq:GEM-TM> </gemq:teachingMethods> </rdf:Description> </xsl:template>
And with just free-text <rdf:Description> <gemq:teachingMethods>MultimediaInstruction</dc:identifier> </rdf:Description>
<xsl:template match="gemq:teachingMethods"> (... You get the point ...) </xsl:template>
This last rule will be applied when the two previous ones don't match. The job of the XSLT processor is to choose the most specific template matching your input (based on the match attribute), so you generally don't need to write this kind of "xsl:choose" explicitly.
- you cannot create attributes before you create the parent element: your xsl:attribute instructions should appear inside the block <gemq:teachingMethods>(...)</gemq:teachingMethods>
- the "test" expressions do not match your requirements (not[@xsi:type] won't match elements with "xsi:type="gemq:GEM-TM")
I hope that helps, Best regards,
Hello. I'm working on a xml transformation to RDF with XSLT help.
I'm totally very new to XSLT. And It's hard and I'm stuck now. I need your help.
Here are xml element representation with three ways. <gemq:teachingMethods xsi:type='dcterms:URI'>http://purl.org/gem/instance/GEM-TM/#PeerTutoring</gemq:teachingMethods> <gemq:teachingMethods xsi:type='gemq:GEM-TM'>Thematic approach</gemq:teachingMethods> <gemq:teachingMethods>MultimediaInstruction</gemq:teachingMethods>
I need to transform this to rdf like this With xsi:type="dcterms:URI" <rdf:Description> <gemq:teachingMethods rdf:resource="http://purl.org/gem/instance/GEM-TM/#PeerTutoring"/> </rdf:Description>
With xsi:type="gemq:GEM-TM" <rdf:Description> <gemq:teachingMethods> <gemq:GEM-TM> <rdf:value>Thematic approach</rdf:value> <rdfs:label>Thematic approach</rdfs:label> </gemq:GEM-TM> </gemq:teachingMethods> </rdf:Description>
And with just free-text <rdf:Description> <gemq:teachingMethods>MultimediaInstruction</dc:identifier> </rdf:Description>
I did xslt with <xsl:template match="gemq:teachingMethods"> <xsl:choose> <xsl:when test="contains(@xsi:type, 'dcterms:URI')"> <xsl:attribute name="rdf:resource"> <xsl:value-of select="normalize-space(.)"/> </xsl:attribute> </xsl:when> <xsl:when test="not[@xsi:type]"> <xsl:attribute name="rdf:resource"> <xsl:value-of select="normalize-space(.)"/> </xsl:attribute> </xsl:when> <xsl:otherwise> <gemq:teachingMethods> <xsl:value-of select="normalize-space(.)"/> </gemq:teachingMethods> </xsl:otherwise> </xsl:choose> </xsl:template>
Could you give me some tips or advice?
I appreciate it.
Thanks a lot,
Best regards, Oknam
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