XPath related query
Hello All, The following sample XML document is generated from an RDF graph: <DBLP> <Book rdf:about="Book1"> <chapter> <Chapter rdf:about="Introduction"> <section> <Section rdf:about="Section1"> <cites rdf:resource="Article2"/> <figure>"Example RDF graph"</figure> </Section> </section> </Chapter> </chapter> </Book> <Article rdf:about="Article2"> <chapter> <Chapter rdf:about="Proof"> <section> <Section rdf:about="Semi-joins"> <cites rdf:resource="Book3"/> <figure>"Example Semi-join"</figure> </Section> </section> </Chapter> </chapter> </Article> </DBLP> I am trying to understand if a path query on an RDF graph can be represented as an XPath query over the corresponding XML structure. So the query that I am trying to represent is: Is there a Book "Book1" that has a chapter 'c1' that cites some article 'a' and does this article 'a' have a chapter 'c2' which has a section 's' which has a figure 'f' which is called "Example semi-joins". This is a binary yes/no type of query. 'c1', 'c2', 'a', 's' and 'f' are introduced for the sake of explaining the query. In the XML above, c1=Introduction, a="Article 2", c2="Proof", s="Semi-Joins". Since I am new to XPath, I am finding it hard to express this query.I am not even sure if this can be expressed in XPath. I have just broken down a single query to explain my line of thinking. This is how far I could come: If X = //*[@rdf:about='Book1']//Chapter//cites@ref:resource ---- I expect this to give me all the ref:resource attribute nodes? //Article[@ref:about==X]//Chapter//Section//figure[text() == "Example semi-joins"] ---- Can I match the attribute nodes above with the ref:about attribute in Article? Any ideas how I could do this? Thanks in anticipation, Vineet
PURCHASE STYLUS STUDIO ONLINE TODAY!
Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!
Download The World's Best XML IDE!
Accelerate XML development with our award-winning XML IDE - Download a free trial today!
Subscribe in XML format