@Test
public void testQueryWorks() {
ReconnectingDatasetGraph toQuery =
(ReconnectingDatasetGraph)
((Dataset) AssemblerUtils.build("basic.ttl", SDBConnect.TYPE)).asDatasetGraph();
toQuery.getDatasetGraph().getStore().getTableFormatter().format();
Dataset ds = DatasetImpl.wrap(toQuery);
// Dataset ds = new DatasetImpl(toQuery);
QueryExecution qe = QueryExecutionFactory.create("ASK { ?s ?p ?o }", ds);
assertTrue("Querying works", !qe.execAsk());
}
@Test
public void testFullQueryWorks() {
ReconnectingDatasetGraph toQuery =
(ReconnectingDatasetGraph)
((Dataset) AssemblerUtils.build("basic.ttl", SDBConnect.TYPE)).asDatasetGraph();
toQuery.getDatasetGraph().getStore().getTableFormatter().format();
Dataset ds = DatasetImpl.wrap(toQuery);
// Dataset ds = new DatasetImpl(toQuery);
QueryExecution qe = QueryExecutionFactory.create("SELECT * { ?s ?p ?o }", ds);
ResultSet r = qe.execSelect();
assertTrue("Querying works", !r.hasNext());
qe.close();
qe = QueryExecutionFactory.create("SELECT * { graph ?g { ?s ?p ?o } }", ds);
r = qe.execSelect();
assertTrue("Querying with named graphs works", !r.hasNext());
qe.close();
}
@Test
public void testUnionWorks() {
Dataset ds = (Dataset) AssemblerUtils.build("union.ttl", SDBConnect.TYPE);
ReconnectingDatasetGraph toQuery = (ReconnectingDatasetGraph) ds.asDatasetGraph();
toQuery.getDatasetGraph().getStore().getTableFormatter().format();
UpdateRequest ur =
UpdateFactory.create(
"insert data {"
+ "graph <http://example.com/a> { <http://example.com/1> <http://example.com/prop> 1 }"
+ "graph <http://example.com/b> { <http://example.com/2> <http://example.com/prop> 2 }"
+ "}");
UpdateProcessor u = UpdateExecutionFactory.create(ur, toQuery);
u.execute();
QueryExecution qe = QueryExecutionFactory.create("SELECT * { ?s ?p ?o }", ds);
ResultSetRewindable r = ResultSetFactory.makeRewindable(qe.execSelect());
assertEquals("We have a union!", 2, r.size());
}