/** Create a Context from content of st:param */
public Context process() {
Entity ent = g.getEdges(Context.STL_PARAM).iterator().next();
if (ent == null) {
return new Context();
}
return process(ent.getNode(1));
}
/**
* Dans le cas des chemins
*
* @param gNode
* @param from
* @param qEdge
* @param env ne pas prendre en compte l'env dans le calcul des chemins
* @param exp
* @param src l'ensemble des
* @param start noeud courant
* @param index sens du parcours
* @return
*/
@Override
public Iterable<Entity> getEdges(
Node gNode,
List<Node> from,
Edge qEdge,
Environment env,
Regex exp,
Node src,
Node start,
int index) {
Graph resGraph = Graph.create();
return resGraph.getEdges();
}
/**
* Transforms an EDGE request into a simple SPARQL query pushed to the remote producer. Results
* are returned through standard web services protocol.
*
* @param gNode graph variable if it exists, null otherwise
* @param from "from named <g>" list
* @param qEdge edge searched for
* @param env query execution context (current variable values, etc.)
* @return an iterator over graph entities
*/
@Override
public Iterable<Entity> getEdges(Node gNode, List<Node> from, Edge qEdge, Environment env) {
// si gNode != null et from non vide, alors "from named"
// si gNode == null et from non vide alors "from"
String query = getSparqlQuery(qEdge, env);
Graph resGraph = Graph.create();
Graph g = Graph.create();
StopWatch sw = new StopWatch();
sw.start();
InputStream is = null;
try {
QueryProcess exec = QueryProcess.create(resGraph);
if (query != null) {
Mappings map = exec.query(query);
// logger.info("Received results in " + sw.getTime());
String sparqlRes = RDFFormat.create(map).toString();
// System.out.println(XMLFormat.create(map));
if (sparqlRes != null) {
Load l = Load.create(g);
is = new ByteArrayInputStream(sparqlRes.getBytes());
l.load(is);
// logger.info("Results (cardinality " + g.size() + ") merged in " +
// sw.getTime() + " ms.");
}
}
} catch (LoadException ex) {
ex.printStackTrace();
} catch (EngineException ex) {
ex.printStackTrace();
}
// for (Iterator<Entity> it = g.getEdges().iterator(); it.hasNext();) {
// Edge e = (Edge) it.next();
// System.out.println(e);
// }
//
return g.getEdges();
}
public Iterable<Entity> getEdges() {
Graph g = getGraph();
if (g == null) return new ArrayList<Entity>();
return g.getEdges();
}