@Test
public void testSize() throws Exception {
assertEquals("Size of empty repository should be 0", 0, con.size());
// Add some data to the repository
con.begin();
con.addStatement(painter, RDF.TYPE, RDFS.CLASS);
con.addStatement(painting, RDF.TYPE, RDFS.CLASS);
con.addStatement(picasso, RDF.TYPE, painter, context1);
con.addStatement(guernica, RDF.TYPE, painting, context1);
con.addStatement(picasso, paints, guernica, context1);
con.commit();
assertEquals("Size of repository should be 5", 5, con.size());
assertEquals("Size of named context should be 3", 3, con.size(context1));
URI unknownContext = new URIImpl(EXAMPLE_NS + "unknown");
assertEquals("Size of unknown context should be 0", 0, con.size(unknownContext));
URIImpl uriImplContext1 = new URIImpl(context1.toString());
assertEquals(
"Size of named context (defined as URIImpl) should be 3", 3, con.size(uriImplContext1));
}
@Test
public void testQueryBindings() throws Exception {
// Add some data to the repository
con.begin();
con.addStatement(painter, RDF.TYPE, RDFS.CLASS);
con.addStatement(painting, RDF.TYPE, RDFS.CLASS);
con.addStatement(picasso, RDF.TYPE, painter, context1);
con.addStatement(guernica, RDF.TYPE, painting, context1);
con.addStatement(picasso, paints, guernica, context1);
con.commit();
// Query 1
ParsedTupleQuery tupleQuery =
QueryParserUtil.parseTupleQuery(
QueryLanguage.SERQL, "select X from {X} rdf:type {Y} rdf:type {rdfs:Class}", null);
TupleExpr tupleExpr = tupleQuery.getTupleExpr();
MapBindingSet bindings = new MapBindingSet(2);
CloseableIteration<? extends BindingSet, QueryEvaluationException> iter;
iter = con.evaluate(tupleExpr, null, bindings, false);
int resultCount = verifyQueryResult(iter, 1);
assertEquals("Wrong number of query results", 2, resultCount);
bindings.addBinding("Y", painter);
iter = con.evaluate(tupleExpr, null, bindings, false);
resultCount = verifyQueryResult(iter, 1);
assertEquals("Wrong number of query results", 1, resultCount);
bindings.addBinding("Z", painting);
iter = con.evaluate(tupleExpr, null, bindings, false);
resultCount = verifyQueryResult(iter, 1);
assertEquals("Wrong number of query results", 1, resultCount);
bindings.removeBinding("Y");
iter = con.evaluate(tupleExpr, null, bindings, false);
resultCount = verifyQueryResult(iter, 1);
assertEquals("Wrong number of query results", 2, resultCount);
// Query 2
tupleQuery =
QueryParserUtil.parseTupleQuery(
QueryLanguage.SERQL,
"select X from {X} rdf:type {Y} rdf:type {rdfs:Class} where Y = Z",
null);
tupleExpr = tupleQuery.getTupleExpr();
bindings.clear();
iter = con.evaluate(tupleExpr, null, bindings, false);
resultCount = verifyQueryResult(iter, 1);
assertEquals("Wrong number of query results", 0, resultCount);
bindings.addBinding("Z", painter);
iter = con.evaluate(tupleExpr, null, bindings, false);
resultCount = verifyQueryResult(iter, 1);
assertEquals("Wrong number of query results", 1, resultCount);
}
@Test
public void testBNodeReuse() throws Exception {
con.begin();
con.addStatement(RDF.VALUE, RDF.VALUE, RDF.VALUE);
assertEquals(1, con.size());
BNode b1 = vf.createBNode();
con.addStatement(b1, RDF.VALUE, b1);
con.removeStatements(b1, RDF.VALUE, b1);
assertEquals(1, con.size());
BNode b2 = vf.createBNode();
con.addStatement(b2, RDF.VALUE, b2);
con.addStatement(b1, RDF.VALUE, b1);
assertEquals(3, con.size());
con.commit();
}
@Test
public void testDualConnections() throws Exception {
SailConnection con2 = sail.getConnection();
try {
assertEquals(0, countAllElements());
con.begin();
con.addStatement(painter, RDF.TYPE, RDFS.CLASS);
con.addStatement(painting, RDF.TYPE, RDFS.CLASS);
con.addStatement(picasso, RDF.TYPE, painter, context1);
con.addStatement(guernica, RDF.TYPE, painting, context1);
con.commit();
assertEquals(4, countAllElements());
con2.begin();
con2.addStatement(RDF.NIL, RDF.TYPE, RDF.LIST);
String query = "SELECT S, P, O FROM {S} P {O}";
ParsedTupleQuery tupleQuery =
QueryParserUtil.parseTupleQuery(QueryLanguage.SERQL, query, null);
assertEquals(
5,
countElements(
con2.evaluate(
tupleQuery.getTupleExpr(), null, EmptyBindingSet.getInstance(), false)));
Runnable clearer =
new Runnable() {
public void run() {
try {
con.begin();
con.clear();
con.commit();
} catch (SailException e) {
throw new RuntimeException(e);
}
}
};
Thread thread = new Thread(clearer);
thread.start();
Thread.yield();
Thread.yield();
con2.commit();
thread.join();
} finally {
con2.close();
}
}
@Test
public void testClose() {
try {
con.close();
con.addStatement(painter, RDF.TYPE, RDFS.CLASS);
fail("Operation on connection after close should result in IllegalStateException");
} catch (IllegalStateException e) {
// do nothing, this is expected
} catch (SailException e) {
fail(e.getMessage());
}
}
@Test
public void testCreateURI2() throws Exception {
URI picasso1 = vf.createURI(EXAMPLE_NS + PICASSO);
URI picasso2 = vf.createURI(EXAMPLE_NS, PICASSO);
con.begin();
con.addStatement(picasso1, paints, guernica);
con.addStatement(picasso2, paints, guernica);
con.commit();
assertEquals(
"createURI(Sring) and createURI(String, String) should create equal URIs", 1, con.size());
}
@Test
public void testGetContextIDs() throws Exception {
assertEquals(0, countElements(con.getContextIDs()));
// load data
con.begin();
con.addStatement(picasso, paints, guernica, context1);
assertEquals(1, countElements(con.getContextIDs()));
assertEquals(context1, first(con.getContextIDs()));
con.removeStatements(picasso, paints, guernica, context1);
assertEquals(0, countElements(con.getContextIDs()));
con.commit();
assertEquals(0, countElements(con.getContextIDs()));
con.begin();
con.addStatement(picasso, paints, guernica, context2);
assertEquals(1, countElements(con.getContextIDs()));
assertEquals(context2, first(con.getContextIDs()));
con.commit();
}
@Test
public void testRemoveAndClear() throws Exception {
// Add some data to the repository
con.begin();
con.addStatement(painter, RDF.TYPE, RDFS.CLASS);
con.addStatement(painting, RDF.TYPE, RDFS.CLASS);
con.addStatement(picasso, RDF.TYPE, painter, context1);
con.addStatement(guernica, RDF.TYPE, painting, context1);
con.addStatement(picasso, paints, guernica, context1);
con.commit();
// Test removal of statements
con.begin();
con.removeStatements(painting, RDF.TYPE, RDFS.CLASS);
con.commit();
assertEquals("Repository should contain 4 statements in total", 4, countAllElements());
assertEquals("Named context should contain 3 statements", 3, countContext1Elements());
assertEquals(
"Statement (Painting, type, Class) should no longer be in the repository",
0,
countQueryResults("select 1 from {ex:Painting} rdf:type {rdfs:Class}"));
con.begin();
con.removeStatements(null, null, null, context1);
con.commit();
assertEquals("Repository should contain 1 statement in total", 1, countAllElements());
assertEquals("Named context should be empty", 0, countContext1Elements());
con.begin();
con.clear();
con.commit();
assertEquals("Repository should no longer contain any statements", 0, countAllElements());
}
@Test
public void testAddWhileQuerying() throws Exception {
// Add some data to the repository
con.begin();
con.addStatement(painter, RDF.TYPE, RDFS.CLASS);
con.addStatement(painting, RDF.TYPE, RDFS.CLASS);
con.addStatement(picasso, RDF.TYPE, painter);
con.addStatement(guernica, RDF.TYPE, painting);
con.addStatement(picasso, paints, guernica);
con.commit();
ParsedTupleQuery tupleQuery =
QueryParserUtil.parseTupleQuery(QueryLanguage.SERQL, "SELECT C FROM {} rdf:type {C}", null);
CloseableIteration<? extends BindingSet, QueryEvaluationException> iter;
iter = con.evaluate(tupleQuery.getTupleExpr(), null, EmptyBindingSet.getInstance(), false);
con.begin();
while (iter.hasNext()) {
BindingSet bindings = iter.next();
Value c = bindings.getValue("C");
if (c instanceof Resource) {
con.addStatement((Resource) c, RDF.TYPE, RDFS.CLASS);
}
}
con.commit();
assertEquals(3, countElements(con.getStatements(null, RDF.TYPE, RDFS.CLASS, false)));
// simulate auto-commit
tupleQuery =
QueryParserUtil.parseTupleQuery(QueryLanguage.SERQL, "SELECT P FROM {} P {}", null);
iter = con.evaluate(tupleQuery.getTupleExpr(), null, EmptyBindingSet.getInstance(), false);
while (iter.hasNext()) {
BindingSet bindings = iter.next();
Value p = bindings.getValue("P");
if (p instanceof URI) {
con.begin();
con.addStatement((URI) p, RDF.TYPE, RDF.PROPERTY);
con.commit();
}
}
assertEquals(2, countElements(con.getStatements(null, RDF.TYPE, RDF.PROPERTY, false)));
}
protected void testValueRoundTrip(Resource subj, URI pred, Value obj) throws Exception {
con.begin();
con.addStatement(subj, pred, obj);
con.commit();
CloseableIteration<? extends Statement, SailException> stIter =
con.getStatements(null, null, null, false);
try {
assertTrue(stIter.hasNext());
Statement st = stIter.next();
assertEquals(subj, st.getSubject());
assertEquals(pred, st.getPredicate());
assertEquals(obj, st.getObject());
assertTrue(!stIter.hasNext());
} finally {
stIter.close();
}
ParsedTupleQuery tupleQuery =
QueryParserUtil.parseTupleQuery(
QueryLanguage.SERQL,
"SELECT S, P, O FROM {S} P {O} WHERE P = <" + pred.stringValue() + ">",
null);
CloseableIteration<? extends BindingSet, QueryEvaluationException> iter;
iter = con.evaluate(tupleQuery.getTupleExpr(), null, EmptyBindingSet.getInstance(), false);
try {
assertTrue(iter.hasNext());
BindingSet bindings = iter.next();
assertEquals(subj, bindings.getValue("S"));
assertEquals(pred, bindings.getValue("P"));
assertEquals(obj, bindings.getValue("O"));
assertTrue(!iter.hasNext());
} finally {
iter.close();
}
}
@Test
public void testOldURI() throws Exception {
assertEquals(0, countAllElements());
con.begin();
con.addStatement(painter, RDF.TYPE, RDFS.CLASS);
con.addStatement(painting, RDF.TYPE, RDFS.CLASS);
con.addStatement(picasso, RDF.TYPE, painter, context1);
con.addStatement(guernica, RDF.TYPE, painting, context1);
con.addStatement(picasso, paints, guernica, context1);
assertEquals(5, countAllElements());
con.commit();
con.begin();
con.clear();
con.commit();
con.begin();
con.addStatement(picasso, paints, guernica, context1);
con.commit();
assertEquals(1, countAllElements());
}
/** Not compatible with our MVCC semantics. */
private void __testMultiThreadedAccess() {
Runnable runnable =
new Runnable() {
SailConnection sharedCon = con;
public void run() {
assertTrue(sharedCon != null);
try {
while (sharedCon.isActive()) {
Thread.sleep(10);
}
sharedCon.begin();
sharedCon.addStatement(painter, RDF.TYPE, RDFS.CLASS);
sharedCon.commit();
// wait a bit to allow other thread to add stuff as well.
Thread.sleep(500L);
CloseableIteration<? extends Statement, SailException> result =
sharedCon.getStatements(null, null, null, true);
assertTrue(result.hasNext());
int numberOfStatements = 0;
while (result.hasNext()) {
numberOfStatements++;
Statement st = result.next();
assertTrue(st.getSubject().equals(painter) || st.getSubject().equals(picasso));
assertTrue(st.getPredicate().equals(RDF.TYPE));
assertTrue(st.getObject().equals(RDFS.CLASS) || st.getObject().equals(painter));
}
assertTrue(
"we should have retrieved statements from both threads", numberOfStatements == 2);
} catch (SailException e) {
e.printStackTrace();
fail(e.getMessage());
} catch (InterruptedException e) {
fail(e.getMessage());
}
// let this thread sleep so the other thread can invoke close()
// first.
try {
Thread.sleep(1000L);
// the connection should now be closed (by the other thread),
// invoking any further operation should cause a
// IllegalStateException
sharedCon.getStatements(null, null, null, true);
fail("should have caused an IllegalStateException");
} catch (InterruptedException e) {
fail(e.getMessage());
} catch (SailException e) {
e.printStackTrace();
fail(e.getMessage());
} catch (IllegalStateException e) {
// do nothing, this is the expected behaviour
}
}
}; // end anonymous class declaration
// execute the other thread
Thread newThread = new Thread(runnable, "B (parallel)");
newThread.start();
try {
while (con.isActive()) {
Thread.sleep(10);
}
con.begin();
con.addStatement(picasso, RDF.TYPE, painter);
con.commit();
// let this thread sleep to enable other thread to finish its business.
Thread.sleep(1000L);
con.close();
} catch (SailException e) {
e.printStackTrace();
fail(e.getMessage());
} catch (InterruptedException e) {
fail(e.getMessage());
}
}
@Test
public void testContexts() throws Exception {
con.begin();
// Add schema data to the repository, no context
con.addStatement(painter, RDF.TYPE, RDFS.CLASS);
con.addStatement(painting, RDF.TYPE, RDFS.CLASS);
// Add stuff about picasso to context1
con.addStatement(picasso, RDF.TYPE, painter, context1);
con.addStatement(guernica, RDF.TYPE, painting, context1);
con.addStatement(picasso, paints, guernica, context1);
// Add stuff about rembrandt to context2
con.addStatement(rembrandt, RDF.TYPE, painter, context2);
con.addStatement(nightwatch, RDF.TYPE, painting, context2);
con.addStatement(rembrandt, paints, nightwatch, context2);
con.commit();
assertEquals("context1 should contain 3 statements", 3, countContext1Elements());
assertEquals(
"context2 should contain 3 statements",
3,
countElements(con.getStatements(null, null, null, false, context2)));
assertEquals("Repository should contain 8 statements", 8, countAllElements());
assertEquals(
"statements without context should equal 2",
2,
countElements(con.getStatements(null, null, null, false, (Resource) null)));
assertEquals(
"Statements without context and statements in context 1 together should total 5",
5,
countElements(con.getStatements(null, null, null, false, null, context1)));
assertEquals(
"Statements without context and statements in context 2 together should total 5",
5,
countElements(con.getStatements(null, null, null, false, null, context2)));
assertEquals(
"Statements in context 1 and in context 2 together should total 6",
6,
countElements(con.getStatements(null, null, null, false, context1, context2)));
// remove two statements from context1.
con.begin();
con.removeStatements(picasso, null, null, context1);
con.commit();
assertEquals("context1 should contain 1 statements", 1, countContext1Elements());
assertEquals("Repository should contain 6 statements", 6, countAllElements());
assertEquals(
"Statements without context and statements in context 1 together should total 3",
3,
countElements(con.getStatements(null, null, null, false, null, context1)));
assertEquals(
"Statements without context and statements in context 2 together should total 5",
5,
countElements(con.getStatements(null, null, null, false, context2, null)));
assertEquals(
"Statements in context 1 and in context 2 together should total 4",
4,
countElements(con.getStatements(null, null, null, false, context1, context2)));
}
@Test
public void testAddData() throws Exception {
// Add some data to the repository
con.begin();
con.addStatement(painter, RDF.TYPE, RDFS.CLASS);
con.addStatement(painting, RDF.TYPE, RDFS.CLASS);
con.addStatement(picasso, RDF.TYPE, painter, context1);
con.addStatement(guernica, RDF.TYPE, painting, context1);
con.addStatement(picasso, paints, guernica, context1);
con.commit();
assertEquals("Repository should contain 5 statements in total", 5, countAllElements());
assertEquals("Named context should contain 3 statements", 3, countContext1Elements());
assertEquals(
"Repository should have 1 context identifier", 1, countElements(con.getContextIDs()));
assertEquals(
"Repository should contain 5 statements in total",
5,
countQueryResults("select * from {S} P {O}"));
// Check for presence of the added statements
assertEquals(
"Statement (Painter, type, Class) should be in the repository",
1,
countQueryResults("select 1 from {ex:Painter} rdf:type {rdfs:Class}"));
assertEquals(
"Statement (picasso, type, Painter) should be in the repository",
1,
countQueryResults("select 1 from {ex:picasso} rdf:type {ex:Painter}"));
// Check for absense of non-added statements
assertEquals(
"Statement (Painter, paints, Painting) should not be in the repository",
0,
countQueryResults("select 1 from {ex:Painter} ex:paints {ex:Painting}"));
assertEquals(
"Statement (picasso, creates, guernica) should not be in the repository",
0,
countQueryResults("select 1 from {ex:picasso} ex:creates {ex:guernica}"));
// Various other checks
assertEquals(
"Repository should contain 2 statements matching (picasso, _, _)",
2,
countQueryResults("select * from {ex:picasso} P {O}"));
assertEquals(
"Repository should contain 1 statement matching (picasso, paints, _)",
1,
countQueryResults("select * from {ex:picasso} ex:paints {O}"));
assertEquals(
"Repository should contain 4 statements matching (_, type, _)",
4,
countQueryResults("select * from {S} rdf:type {O}"));
assertEquals(
"Repository should contain 2 statements matching (_, _, Class)",
2,
countQueryResults("select * from {S} P {rdfs:Class}"));
assertEquals(
"Repository should contain 0 statements matching (_, _, type)",
0,
countQueryResults("select * from {S} P {rdf:type}"));
}