package net.fortytwo.ripple;
import net.fortytwo.linkeddata.sail.LinkedDataSail;
import net.fortytwo.ripple.sail.RippleSail;
import org.openrdf.query.QueryLanguage;
import org.openrdf.query.TupleQueryResult;
import org.openrdf.repository.Repository;
import org.openrdf.repository.RepositoryConnection;
import org.openrdf.repository.sail.SailRepository;
import org.openrdf.sail.Sail;
import org.openrdf.sail.SailException;
import org.openrdf.sail.memory.MemoryStore;
/**
* @author Joshua Shinavier (http://fortytwo.net)
*/
public class RippleSailDemo {
private RippleSailDemo() {
}
private static void runDemo() throws Exception {
Sail storage = new MemoryStore();
storage.initialize();
Sail linkedData = new LinkedDataSail(storage);
linkedData.initialize();
RippleSail ripple = new RippleSail(linkedData);
ripple.initialize();
Repository repo = new SailRepository(ripple);
RepositoryConnection rc = repo.getConnection();
// Constructing literal subjects
String query1 = "PREFIX math: <http://fortytwo.net/2011/04/ripple/math#>\n" +
"PREFIX stack: <http://fortytwo.net/2011/04/ripple/stack#>\n" +
"SELECT ?result WHERE {\n" +
" ?x stack:self 42 .\n" +
" ?x math:sqrt ?result .\n" +
"}";
// Constructing literal predicates
String query2 = "PREFIX graph: <http://fortytwo.net/2011/04/ripple/graph#>\n" +
"PREFIX stack: <http://fortytwo.net/2011/04/ripple/stack#>\n" +
"PREFIX s: <urn:string:>\n" +
"SELECT ?result WHERE {\n" +
" ?x stack:self \"{\\\"foo\\\": true, \\\"bar\\\": [6, 9, 42]}\" .\n" +
" ?x graph:to-json/s:foo ?result .\n" +
"}";
// Loading externally-defined programs
String query3 = "PREFIX : <http://ripple.fortytwo.net/code/2011/06/rippleSailExamples#>\n" +
"SELECT ?name WHERE {" +
" () :embarcadero/:parent-place*/s:name ?name ." +
"}";
TupleQueryResult r = rc.prepareTupleQuery(QueryLanguage.SPARQL, query2).evaluate();
while (r.hasNext()) {
System.out.println("result: " + r.next());
}
rc.close();
repo.shutDown();
ripple.shutDown();
linkedData.shutDown();
storage.shutDown();
}
public static void main(final String[] args) throws SailException {
try {
runDemo();
} catch (Throwable e) {
e.printStackTrace(System.err);
System.exit(1);
}
// Exit despite any remaining active threads.
System.exit(0);
}
/*
rm /tmp/ripple-tmp.trig
ripple config/publishing.props
@prefix : <http://ripple.fortytwo.net/code/2011/06/rippleSailExamples#>
# Fetches Twitter Places JSON from Twitter's REST API
# id: a place id (e.g. "90942366be65cd2c")
@list id twitter-place: \
"http://api.twitter.com/1/geo/id/" id concat. \
".json" concat. \
to-uri. get. to-json.
# Fetches the parent features of a place
# place: the JSON of an already-fetched place
@list place parent-place: \
place "contained_within". each. \
"id". :twitter-place.
@list embarcadero: "90942366be65cd2c" :twitter-place.
@quit
rapper -i trig -o rdfxml /tmp/ripple-tmp.trig > /tmp/ripple-tmp.rdf
cp /tmp/ripple-tmp.rdf ~/Dropbox/hosts/ripple.fortytwo.net/code/2011/06/rippleSailExamples.rdf
vim ~/Dropbox/hosts/ripple.fortytwo.net/code/2011/06/.htaccess
*/
}