/**
* Insert Triple/Statement into graph
*
* @param s subject uriref
* @param p predicate uriref
* @param o value object (URIref or Literal)
*/
public void add(URI s, URI p, Value o) {
try {
RepositoryConnection con = therepository.getConnection();
try {
ValueFactory myFactory = con.getValueFactory();
Statement st = myFactory.createStatement(s, p, o);
con.add(st);
} finally {
con.close();
}
} catch (Exception e) {
// handle exception
}
}
/**
* UR Iref factory
*
* @param uri to build
* @return URI resource
*/
public URI URIref(String uri) {
try {
RepositoryConnection con = therepository.getConnection();
try {
ValueFactory vf = con.getValueFactory();
return vf.createURI(uri);
} finally {
con.close();
}
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* BNode factory
*
* @return BNode a blank node
*/
public BNode bnode() {
try {
RepositoryConnection con = therepository.getConnection();
try {
ValueFactory vf = con.getValueFactory();
return vf.createBNode();
} finally {
con.close();
}
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Literal factory
*
* @param s the literal value
* @param typeuri uri representing the type (generally xsd)
* @return Literal type
*/
public org.openrdf.model.Literal Literal(String s, URI typeuri) {
try {
RepositoryConnection con = therepository.getConnection();
try {
ValueFactory vf = con.getValueFactory();
if (typeuri == null) {
return vf.createLiteral(s);
} else {
return vf.createLiteral(s, typeuri);
}
} finally {
con.close();
}
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
public Value eval(RCvalue args) throws EvalException {
if (args.size() != 2) throw new EvalException("usage: reduce(polygon, errtol])");
PolygonValue pv1 = (PolygonValue) args.value(0);
PolygonValue pv2 = (PolygonValue) args.value(1);
boolean isContain = pv1.polygon().contains(pv2.polygon());
double contain = 0;
if (isContain) {
contain = 1; // we don't have a boolean factory now.
}
return ValueFactory.create(contain);
}