public static void main(String... argv) {
String queryString = "SELECT * { ?s ?p ?o }";
Query query = QueryFactory.create(queryString);
Store store = SDBFactory.connectStore("sdb.ttl");
// Must be a DatasetStore to trigger the SDB query engine.
// Creating a graph from the Store, and adding it to a general
// purpose dataset will not necesarily exploit full SQL generation.
// The right answers will be obtained but slowly.
Dataset ds = DatasetStore.create(store);
QueryExecution qe = QueryExecutionFactory.create(query, ds);
try {
ResultSet rs = qe.execSelect();
ResultSetFormatter.out(rs);
} finally {
qe.close();
}
// Close the SDB conenction which also closes the underlying JDBC connection.
store.getConnection().close();
store.close();
}
public static void main(String[] args) {
try {
Model schema = null;
Store store = null;
SDBConnection conn = null;
if (args.length == 1) {
store = ExtendedSDBFactory.connectStore(args[0]);
store.getTableFormatter().create();
schema = ExtendedSDBFactory.connectPagedDefaultModel(store);
} else {
StoreDesc storeDesc = new StoreDesc(args[0], args[1]);
Class.forName(args[2]);
String jdbcURL = args[3] + args[4];
conn = new SDBConnection(jdbcURL, args[5], args[6]);
store = ExtendedSDBFactory.connectStore(conn, storeDesc);
store.getTableFormatter().create();
schema = ExtendedSDBFactory.connectPagedNamedModel(store, args[7]);
}
long startTime = System.currentTimeMillis(), endTime = 0L, count = 0L;
schema.read("http://www.lehigh.edu/~zhp2/2004/0401/univ-bench.owl");
OntModel m = ExtendedModelFactory.createOntologyModel(PelletReasonerFactory.THE_SPEC, schema);
String sInputDirectory = args[8];
File inputDirectory = new File(sInputDirectory);
String[] sFilenames = inputDirectory.list(new OWLFilenameFilter());
for (int i = 0; i < sFilenames.length; i++) {
InputStream in = FileManager.get().open(sInputDirectory + sFilenames[i]);
if (in == null) {
throw new IllegalArgumentException("File: " + sFilenames[i] + " not found");
}
m.read(in, "http://www.utdallas.edu/benchmark-test#", "RDF/XML-ABBREV");
in.close();
}
endTime = System.currentTimeMillis();
System.out.println("time to read the model = " + (endTime - startTime) / 1000 + " seconds.");
startTime = System.currentTimeMillis();
String queryString =
" PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> "
+ " PREFIX ub: <http://www.lehigh.edu/~zhp2/2004/0401/univ-bench.owl#> "
+ " SELECT * WHERE "
+ " { "
+ " ?x rdf:type ub:GraduateStudent . "
+ " ?x ub:takesCourse <http://www.Department0.University0.edu/GraduateCourse0> . "
+ " }";
Query query = QueryFactory.create(queryString);
QueryExecution qexec = QueryExecutionFactory.create(query, m);
ResultSet rs = qexec.execSelect();
while (rs.hasNext()) {
count++;
rs.nextSolution();
}
qexec.close();
endTime = System.currentTimeMillis();
System.out.println("count = " + count);
System.out.println("time to query = " + (endTime - startTime) + " milliseconds.");
store.close();
conn.close();
} catch (Exception e) {
e.printStackTrace();
}
}
