- From: Steve Harris <steve.harris@garlik.com>
- Date: Tue, 22 Nov 2011 17:35:34 +0000
- To: Jitao Yang <jitao.yang@gmail.com>
- Cc: semantic-web@w3.org
On 2011-11-22, at 15:54, Jitao Yang wrote: > Dear all, > > In SPARQL, how to decompose a URI in the form of a:b just by the colon(:), assumed that we do not know what a or b is, such as we can not use STRLEN to calculate their length. In SPARQL 1.1 you can use REPLACE. http://www.w3.org/2009/sparql/docs/query-1.1/rq25.xml#func-replace BIND(REPLACE(?uri, ":.*$", "") AS ?prefix)) BIND(REPLACE(?uri, "^.*:", "") AS ?postfix)) Will give you bit before the : of ?uri in ?prefix, and the rest in ?postfix. REPLACE is probably not implemented in all that many systems yet though, so you might want to see if someone else has a solution. - Steve -- Steve Harris, CTO, Garlik Limited 1-3 Halford Road, Richmond, TW10 6AW, UK +44 20 8439 8203 http://www.garlik.com/ Registered in England and Wales 535 7233 VAT # 849 0517 11 Registered office: Thames House, Portsmouth Road, Esher, Surrey, KT10 9AD
Received on Tuesday, 22 November 2011 17:36:15 UTC