[rdfweb-dev] foaf rdql query question

Bill French french at SIMS.Berkeley.EDU
Thu Feb 26 21:17:46 UTC 2004


hello,

i'm trying in vain to understand rdql and maybe if i see an example or 
two that i can apply directly to my own work, it will start to make 
sense. i have a foaf file that's available here:

http://www.sims.berkeley.edu/~french/foaf/bill-french.rdf

i'm trying to write a java class called FOAFPerson whose constructor 
sucks in a FOAF file, and populates the private fields based on rdql 
queries. the first query i want to do is to get the <foaf:name/> of the 
owner of the foaf file, in this case, Bill French. secondly, i want to 
get back a list of all the <foaf:name/>s that i <foaf:knows/>.

this query:

SELECT ?x, ?name FROM 
<http://www.sims.berkeley.edu/~french/foaf/bill-french.rdf> WHERE (?x 
<http://xmlns.com/foaf/0.1/name> ?name

produced:

x                         | name
=========================================
<fb53f6:faf3a7d582:-8000> | "Bill French"
<fb53f6:faf3a7d582:-7fff> | "Bob"
<fb53f6:faf3a7d582:-7ffe> | "Parker"

thanks very much in advance,

--bill french




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