On 10 Jun 2009, at 16:52, रविंदर ठाकुर (ravinder
thakur) wrote:
hello friends
has anyone written some code to programatically query any of the
SPARQL
endpoints (esp lod data at lod.openlinksw.com in java) ? if so it
would be
awesome if he/she can share the sample code or the documentation
needed for
this.
It isn't very difficult to query using java's httpurlconnection [1]
and xml facilities to deal with the results of SELECT and ASK. Just
construct a url like "http://example.com/sparql?query="; +
URLEncoder.encode(queryString, "UTF-8")
However if you want something full featured there is ARQ's
sparqlService [2], which will deal with the messy details for you. [3]
Damian
[1] <http://java.sun.com/j2se/1.5.0/docs/api/javax/net/ssl/HttpsURLConnection.html
>
[2] <http://jena.sourceforge.net/ARQ/javadoc/com/hp/hpl/jena/query/QueryExecutionFactory.html#sparqlService(java.lang.String,%20com.hp.hpl.jena.query.Query)
>
[3] <http://jena.sourceforge.net/ARQ/app_api.html>
