Java Code Examples for org.eclipse.rdf4j.common.iteration.CloseableIteration#next()
The following examples show how to use
org.eclipse.rdf4j.common.iteration.CloseableIteration#next() .
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Example 1
| Source File: KafkaQueryChangeLogIT.java From rya with Apache License 2.0 | 6 votes |
|
@Test
public void readFromPosition_positionStartsNotBegining() throws Exception {
final List<QueryChange> expected = write10ChangesToChangeLog().subList(5, 10);
// set the position to some non-0 position
final TopicPartition partition = new TopicPartition(topic, 0);
consumer.assign(Lists.newArrayList(partition));
consumer.seekToEnd(Lists.newArrayList(partition));
final CloseableIteration<ChangeLogEntry<QueryChange>, QueryChangeLogException> iter = changeLog.readFromPosition(5L);
final List<QueryChange> actual = new ArrayList<>();
while (iter.hasNext()) {
final ChangeLogEntry<QueryChange> entry = iter.next();
actual.add(entry.getEntry());
}
assertEquals(expected, actual);
}
Example 2
| Source File: SailSourceModel.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 6 votes |
|
@Override
public synchronized void removeTermIteration(Iterator<Statement> iter, Resource subj, IRI pred, Value obj,
Resource... contexts) {
try {
CloseableIteration<? extends Statement, SailException> stmts;
stmts = dataset().getStatements(subj, pred, obj, contexts);
try {
while (stmts.hasNext()) {
Statement st = stmts.next();
sink.deprecate(st);
}
} finally {
stmts.close();
}
size = -1;
} catch (SailException e) {
throw new ModelException(e);
}
}
Example 3
| Source File: SailUpdateExecutor.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
/**
* @param add
* @param uc
* @throws SailException
*/
protected void executeAdd(Add add, UpdateContext uc, int maxExecTime) throws SailException {
ValueConstant sourceGraph = add.getSourceGraph();
ValueConstant destinationGraph = add.getDestinationGraph();
Resource source = sourceGraph != null ? (Resource) sourceGraph.getValue() : null;
Resource destination = destinationGraph != null ? (Resource) destinationGraph.getValue() : null;
if (source == null && destination == null || (source != null && source.equals(destination))) {
// source and destination are the same, copy is a null-operation.
return;
}
// get all statements from source and add them to destination
CloseableIteration<? extends Statement, SailException> statements = null;
try {
statements = con.getStatements(null, null, null, uc.isIncludeInferred(), (Resource) source);
if (maxExecTime > 0) {
statements = new TimeLimitIteration<Statement, SailException>(statements, 1000L * maxExecTime) {
@Override
protected void throwInterruptedException() throws SailException {
throw new SailException("execution took too long");
}
};
}
while (statements.hasNext()) {
Statement st = statements.next();
con.addStatement(uc, st.getSubject(), st.getPredicate(), st.getObject(), (Resource) destination);
}
} finally {
if (statements != null) {
statements.close();
}
}
}
Example 4
| Source File: ForwardChainingRDFSInferencerConnection.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
private int applyRuleRdfs9_1() throws SailException {
int nofInferred = 0;
Iterable<Statement> ntIter = newThisIteration.getStatements(null, RDFS.SUBCLASSOF, null);
for (Statement nt : ntIter) {
Resource xxx = nt.getSubject();
Value yyy = nt.getObject();
if (yyy instanceof Resource) {
CloseableIteration<? extends Statement, SailException> t1Iter;
t1Iter = getWrappedConnection().getStatements(null, RDF.TYPE, xxx, true);
while (t1Iter.hasNext()) {
Statement t1 = t1Iter.next();
Resource aaa = t1.getSubject();
boolean added = addInferredStatement(aaa, RDF.TYPE, yyy);
if (added) {
nofInferred++;
}
}
t1Iter.close();
}
}
return nofInferred;
}
Example 5
| Source File: ForwardChainingRDFSInferencerConnection.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
private int applyRuleRdfs7_2() throws SailException {
int nofInferred = 0;
Iterable<Statement> ntIter = newThisIteration.getStatements(null, RDFS.SUBPROPERTYOF, null);
for (Statement nt : ntIter) {
Resource aaa = nt.getSubject();
Value bbb = nt.getObject();
if (aaa instanceof IRI && bbb instanceof IRI) {
CloseableIteration<? extends Statement, SailException> t1Iter;
t1Iter = getWrappedConnection().getStatements(null, (IRI) aaa, null, true);
while (t1Iter.hasNext()) {
Statement t1 = t1Iter.next();
Resource xxx = t1.getSubject();
Value yyy = t1.getObject();
boolean added = addInferredStatement(xxx, (IRI) bbb, yyy);
if (added) {
nofInferred++;
}
}
t1Iter.close();
}
}
return nofInferred;
}
Example 6
| Source File: ForwardChainingRDFSInferencerConnection.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
private int applyRuleRdfs7_1() throws SailException {
int nofInferred = 0;
Iterable<Statement> ntIter = newThisIteration.getStatements(null, null, null);
for (Statement nt : ntIter) {
Resource xxx = nt.getSubject();
IRI aaa = nt.getPredicate();
Value yyy = nt.getObject();
CloseableIteration<? extends Statement, SailException> t1Iter;
t1Iter = getWrappedConnection().getStatements(aaa, RDFS.SUBPROPERTYOF, null, true);
while (t1Iter.hasNext()) {
Statement t1 = t1Iter.next();
Value bbb = t1.getObject();
if (bbb instanceof IRI) {
boolean added = addInferredStatement(xxx, (IRI) bbb, yyy);
if (added) {
nofInferred++;
}
}
}
t1Iter.close();
}
return nofInferred;
}
Example 7
| Source File: ForwardChainingRDFSInferencerConnection.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
private int applyRuleRdfs5_1() throws SailException {
int nofInferred = 0;
Iterable<Statement> ntIter = newThisIteration.getStatements(null, RDFS.SUBPROPERTYOF, null);
for (Statement nt : ntIter) {
Resource aaa = nt.getSubject();
Value bbb = nt.getObject();
if (bbb instanceof Resource) {
CloseableIteration<? extends Statement, SailException> t1Iter;
t1Iter = getWrappedConnection().getStatements((Resource) bbb, RDFS.SUBPROPERTYOF, null, true);
while (t1Iter.hasNext()) {
Statement t1 = t1Iter.next();
Value ccc = t1.getObject();
if (ccc instanceof Resource) {
boolean added = addInferredStatement(aaa, RDFS.SUBPROPERTYOF, ccc);
if (added) {
nofInferred++;
}
}
}
t1Iter.close();
}
}
return nofInferred;
}
Example 8
| Source File: ForwardChainingRDFSInferencerConnection.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
private int applyRuleRdfs3_2() throws SailException {
int nofInferred = 0;
Iterable<Statement> ntIter = newThisIteration.getStatements(null, RDFS.RANGE, null);
for (Statement nt : ntIter) {
Resource aaa = nt.getSubject();
Value zzz = nt.getObject();
if (aaa instanceof IRI && zzz instanceof Resource) {
CloseableIteration<? extends Statement, SailException> t1Iter;
t1Iter = getWrappedConnection().getStatements(null, (IRI) aaa, null, true);
while (t1Iter.hasNext()) {
Statement t1 = t1Iter.next();
Value uuu = t1.getObject();
if (uuu instanceof Resource) {
boolean added = addInferredStatement((Resource) uuu, RDF.TYPE, zzz);
if (added) {
nofInferred++;
}
}
}
t1Iter.close();
}
}
return nofInferred;
}
Example 9
| Source File: ForwardChainingRDFSInferencerConnection.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
private int applyRuleRdfs2_2() throws SailException {
int nofInferred = 0;
Iterable<Statement> ntIter = newThisIteration.getStatements(null, RDFS.DOMAIN, null);
for (Statement nt : ntIter) {
Resource aaa = nt.getSubject();
Value zzz = nt.getObject();
if (aaa instanceof IRI && zzz instanceof Resource) {
CloseableIteration<? extends Statement, SailException> t1Iter;
t1Iter = getWrappedConnection().getStatements(null, (IRI) aaa, null, true);
while (t1Iter.hasNext()) {
Statement t1 = t1Iter.next();
Resource xxx = t1.getSubject();
boolean added = addInferredStatement(xxx, RDF.TYPE, zzz);
if (added) {
nofInferred++;
}
}
t1Iter.close();
}
}
return nofInferred;
}
Example 10
| Source File: MongoTemporalIndexerIT.java From rya with Apache License 2.0 | 5 votes |
|
/**
* interval is after the given interval. Find interval beginnings after the endings of the given interval.
* {@link MongoTemporalIndexer#queryIntervalAfter(TemporalInterval, StatementContraints).
*
* @throws IOException
* @throws QueryEvaluationException
*/
@Test
public void testQueryIntervalAfter() throws IOException, QueryEvaluationException {
try(MongoTemporalIndexer tIndexer = new MongoTemporalIndexer()) {
tIndexer.setConf(conf);
tIndexer.init();
// tiB02_E30 read as: Begins 2 seconds, ends at 30 seconds
tIndexer.storeStatement(convertStatement(spo_B00_E01));
tIndexer.storeStatement(convertStatement(spo_B02_E29)); //<- after this one.
tIndexer.storeStatement(convertStatement(spo_B02_E30));
tIndexer.storeStatement(convertStatement(spo_B02_E31));
tIndexer.storeStatement(convertStatement(spo_B02_E40));
tIndexer.storeStatement(convertStatement(spo_B03_E20));
tIndexer.storeStatement(convertStatement(spo_B29_E30));
tIndexer.storeStatement(convertStatement(spo_B30_E32));
// instants should be ignored.
tIndexer.storeStatement(convertStatement(spo_B02));
tIndexer.storeStatement(convertStatement(seriesSpo[1])); // instance at 1 seconds
tIndexer.storeStatement(convertStatement(seriesSpo[2]));
tIndexer.storeStatement(convertStatement(seriesSpo[31]));
CloseableIteration<Statement, QueryEvaluationException> iter;
iter = tIndexer.queryIntervalAfter(tvB02_E29, EMPTY_CONSTRAINTS);
// Should be found twice:
assertTrue("spo_B30_E32 should be found, but actually returned empty results. spo_B30_E32=" + spo_B30_E32, iter.hasNext());
final Statement s = iter.next();
assertTrue("spo_B30_E32 should be found, but found another. spo_B30_E32="+spo_B30_E32+", but found="+s, spo_B30_E32.equals(s));
assertFalse("Find no more than one, but actually has more.", iter.hasNext());
}
}
Example 11
| Source File: ForwardChainingRDFSInferencerConnection.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
private int applyRuleRdfs11_1() throws SailException {
int nofInferred = 0;
Iterable<Statement> ntIter = newThisIteration.getStatements(null, RDFS.SUBCLASSOF, null);
for (Statement nt : ntIter) {
Resource xxx = nt.getSubject();
Value yyy = nt.getObject();
if (yyy instanceof Resource) {
CloseableIteration<? extends Statement, SailException> t1Iter;
t1Iter = getWrappedConnection().getStatements((Resource) yyy, RDFS.SUBCLASSOF, null, true);
while (t1Iter.hasNext()) {
Statement t1 = t1Iter.next();
Value zzz = t1.getObject();
if (zzz instanceof Resource) {
boolean added = addInferredStatement(xxx, RDFS.SUBCLASSOF, zzz);
if (added) {
nofInferred++;
}
}
}
t1Iter.close();
}
}
return nofInferred;
}
Example 12
| Source File: MongoDbSmartUriIT.java From rya with Apache License 2.0 | 5 votes |
|
@Test
public void testStorage() throws SmartUriException, RuntimeException {
smartUriConverter.storeEntity(BOB_ENTITY);
final String sparql = "SELECT * WHERE { " +
"<" + BOB.getData() + "> <" + RDF.TYPE + "> <" + PERSON_TYPE.getId().getData() + "> . " +
"<" + BOB.getData() + "> <" + HAS_SSN.getData() + "> ?ssn . " +
"<" + BOB.getData() + "> <" + HAS_AGE.getData() + "> ?age . " +
"<" + BOB.getData() + "> <" + HAS_WEIGHT.getData() + "> ?weight . " +
"<" + BOB.getData() + "> <" + HAS_ADDRESS.getData() + "> ?address . " +
"}";
final StatementPatternCollector spCollector = new StatementPatternCollector();
new SPARQLParser().parseQuery(sparql, null).getTupleExpr().visit(spCollector);
final List<StatementPattern> patterns = spCollector.getStatementPatterns();
final EntityQueryNode entityQueryNode = new EntityQueryNode(PERSON_TYPE, patterns, smartUriConverter.getEntityStorage());
final QueryBindingSet queryBindingSet = new QueryBindingSet();
final Property ssnProperty = BOB_ENTITY.lookupTypeProperty(PERSON_TYPE, HAS_SSN).get();
queryBindingSet.addBinding(HAS_SSN.getData(), RyaToRdfConversions.convertValue(ssnProperty.getValue()));
final CloseableIteration<BindingSet, QueryEvaluationException> iter = entityQueryNode.evaluate(queryBindingSet);
int count = 0;
// These should match what was used in the SPARQL query.
final List<String> queryParamNames = Lists.newArrayList("ssn", "age", "weight", "address");
while (iter.hasNext()) {
final BindingSet bs = iter.next();
assertTrue(bs.getBindingNames().containsAll(queryParamNames));
count++;
}
assertEquals(count, 1);
}
Example 13
| Source File: AccumuloIndexSetTest.java From rya with Apache License 2.0 | 4 votes |
|
@Test
public void accumuloIndexSetTestWithTwoBindingSets() throws RepositoryException, PcjException, TableNotFoundException,
RyaTypeResolverException, MalformedQueryException, SailException, QueryEvaluationException, AccumuloException, AccumuloSecurityException {
// Load some Triples into Rya.
final Set<Statement> triples = new HashSet<>();
triples.add( VF.createStatement(VF.createIRI("http://Alice"), VF.createIRI("http://hasAge"), VF.createLiteral(BigInteger.valueOf(14))) );
triples.add( VF.createStatement(VF.createIRI("http://Alice"), VF.createIRI("http://playsSport"), VF.createLiteral("Soccer")) );
triples.add( VF.createStatement(VF.createIRI("http://Bob"), VF.createIRI("http://hasAge"), VF.createLiteral(BigInteger.valueOf(16))) );
triples.add( VF.createStatement(VF.createIRI("http://Bob"), VF.createIRI("http://playsSport"), VF.createLiteral("Soccer")) );
triples.add( VF.createStatement(VF.createIRI("http://Charlie"), VF.createIRI("http://hasAge"), VF.createLiteral(BigInteger.valueOf(12))) );
triples.add( VF.createStatement(VF.createIRI("http://Charlie"), VF.createIRI("http://playsSport"), VF.createLiteral("Soccer")) );
triples.add( VF.createStatement(VF.createIRI("http://Eve"), VF.createIRI("http://hasAge"), VF.createLiteral(43)) );
triples.add( VF.createStatement(VF.createIRI("http://Eve"), VF.createIRI("http://playsSport"), VF.createLiteral("Soccer")) );
for(final Statement triple : triples) {
ryaConn.add(triple);
}
// Create a PCJ table will include those triples in its results.
final String sparql =
"SELECT ?name ?age " +
"{" +
"FILTER(?age < 30) ." +
"?name <http://hasAge> ?age." +
"?name <http://playsSport> \"Soccer\" " +
"}";
final String pcjTableName = new PcjTableNameFactory().makeTableName(prefix, "testPcj");
// Create and populate the PCJ table.
PcjIntegrationTestingUtil.createAndPopulatePcj(ryaConn, accumuloConn, pcjTableName, sparql, new String[]{"name", "age"}, Optional.absent());
final AccumuloIndexSet ais = new AccumuloIndexSet(conf, pcjTableName);
final QueryBindingSet bs = new QueryBindingSet();
bs.addBinding("birthDate",VF.createLiteral("1983-03-17",VF.createIRI("http://www.w3.org/2001/XMLSchema#date")));
bs.addBinding("name",VF.createIRI("http://Alice"));
final QueryBindingSet bs2 = new QueryBindingSet();
bs2.addBinding("birthDate",VF.createLiteral("1983-04-18",VF.createIRI("http://www.w3.org/2001/XMLSchema#date")));
bs2.addBinding("name",VF.createIRI("http://Bob"));
final Set<BindingSet> bSets = Sets.newHashSet(bs,bs2);
final CloseableIteration<BindingSet, QueryEvaluationException> results = ais.evaluate(bSets);
final QueryBindingSet alice = new QueryBindingSet();
alice.addBinding("name", VF.createIRI("http://Alice"));
alice.addBinding("age", VF.createLiteral(BigInteger.valueOf(14)));
alice.addBinding("birthDate", VF.createLiteral("1983-03-17",VF.createIRI("http://www.w3.org/2001/XMLSchema#date")));
final QueryBindingSet bob = new QueryBindingSet();
bob.addBinding("name", VF.createIRI("http://Bob"));
bob.addBinding("age", VF.createLiteral(BigInteger.valueOf(16)));
bob.addBinding("birthDate", VF.createLiteral("1983-04-18",VF.createIRI("http://www.w3.org/2001/XMLSchema#date")));
final Set<BindingSet> fetchedResults = new HashSet<>();
while(results.hasNext()) {
final BindingSet next = results.next();
System.out.println(next);
fetchedResults.add(next);
}
Assert.assertEquals(Sets.<BindingSet>newHashSet(alice,bob), fetchedResults);
}
Example 14
| Source File: AccumuloIndexSetTest.java From rya with Apache License 2.0 | 4 votes |
|
@Test
public void accumuloIndexSetTestWithTwoDirectProductBindingSetsWithConstantMapping() throws Exception {
// Load some Triples into Rya.
final Set<Statement> triples = new HashSet<>();
triples.add( VF.createStatement(VF.createIRI("http://Alice"), VF.createIRI("http://hasAge"), VF.createLiteral(BigInteger.valueOf(14))) );
triples.add( VF.createStatement(VF.createIRI("http://Alice"), VF.createIRI("http://playsSport"), VF.createLiteral("Soccer")) );
triples.add( VF.createStatement(VF.createIRI("http://Bob"), VF.createIRI("http://hasAge"), VF.createLiteral(BigInteger.valueOf(16))) );
triples.add( VF.createStatement(VF.createIRI("http://Bob"), VF.createIRI("http://playsSport"), VF.createLiteral("Soccer")) );
triples.add( VF.createStatement(VF.createIRI("http://Charlie"), VF.createIRI("http://hasAge"), VF.createLiteral(BigInteger.valueOf(12))) );
triples.add( VF.createStatement(VF.createIRI("http://Charlie"), VF.createIRI("http://playsSport"), VF.createLiteral("Soccer")) );
triples.add( VF.createStatement(VF.createIRI("http://Eve"), VF.createIRI("http://hasAge"), VF.createLiteral(43)) );
triples.add( VF.createStatement(VF.createIRI("http://Eve"), VF.createIRI("http://playsSport"), VF.createLiteral("Soccer")) );
for(final Statement triple : triples) {
ryaConn.add(triple);
}
// Create a PCJ table will include those triples in its results.
final String sparql =
"SELECT ?name ?age " +
"{" +
"?name <http://hasAge> ?age." +
"?name <http://playsSport> \"Soccer\" " +
"}";
final String pcjTableName = new PcjTableNameFactory().makeTableName(prefix, "testPcj");
// Create and populate the PCJ table.
PcjIntegrationTestingUtil.createAndPopulatePcj(ryaConn, accumuloConn, pcjTableName, sparql, new String[]{"name", "age"}, Optional.absent());
final String sparql2 =
"SELECT ?x " +
"{" +
"?x <http://hasAge> 16 ." +
"?x <http://playsSport> \"Soccer\" " +
"}";
final SPARQLParser p = new SPARQLParser();
final ParsedQuery pq1 = p.parseQuery(sparql, null);
final ParsedQuery pq2 = p.parseQuery(sparql2, null);
final AccumuloIndexSet ais = new AccumuloIndexSet(conf, pcjTableName);
ais.setProjectionExpr((Projection) QueryVariableNormalizer.getNormalizedIndex(pq2.getTupleExpr(), pq1.getTupleExpr()).get(0));
final QueryBindingSet bs = new QueryBindingSet();
bs.addBinding("birthDate",VF.createLiteral("1983-03-17",VF.createIRI("http://www.w3.org/2001/XMLSchema#date")));
bs.addBinding("x",VF.createIRI("http://Alice"));
final QueryBindingSet bs2 = new QueryBindingSet();
bs2.addBinding("birthDate",VF.createLiteral("1983-04-18",VF.createIRI("http://www.w3.org/2001/XMLSchema#date")));
bs2.addBinding("x",VF.createIRI("http://Bob"));
final Set<BindingSet> bSets = Sets.newHashSet(bs,bs2);
final CloseableIteration<BindingSet, QueryEvaluationException> results = ais.evaluate(bSets);
final Set<BindingSet> fetchedResults = new HashSet<>();
while(results.hasNext()) {
final BindingSet next = results.next();
fetchedResults.add(next);
}
Assert.assertEquals(Sets.<BindingSet>newHashSet(bs2), fetchedResults);
}
Example 15
| Source File: HashJoinTest.java From rya with Apache License 2.0 | 4 votes |
|
@Test
public void testSimpleMergeJoinPredicateOnly2() throws Exception {
//add data
RyaIRI pred1 = new RyaIRI(litdupsNS, "pred1");
RyaIRI pred2 = new RyaIRI(litdupsNS, "pred2");
RyaType one = new RyaType("1");
RyaType two = new RyaType("2");
RyaType three = new RyaType("3");
RyaIRI subj1 = new RyaIRI(litdupsNS, "subj1");
RyaIRI subj2 = new RyaIRI(litdupsNS, "subj2");
RyaIRI subj3 = new RyaIRI(litdupsNS, "subj3");
RyaIRI subj4 = new RyaIRI(litdupsNS, "subj4");
dao.add(new RyaStatement(subj1, pred1, one));
dao.add(new RyaStatement(subj1, pred1, two));
dao.add(new RyaStatement(subj1, pred1, three));
dao.add(new RyaStatement(subj1, pred2, one));
dao.add(new RyaStatement(subj1, pred2, two));
dao.add(new RyaStatement(subj1, pred2, three));
dao.add(new RyaStatement(subj2, pred1, one));
dao.add(new RyaStatement(subj2, pred1, two));
dao.add(new RyaStatement(subj2, pred1, three));
dao.add(new RyaStatement(subj2, pred2, one));
dao.add(new RyaStatement(subj2, pred2, two));
dao.add(new RyaStatement(subj2, pred2, three));
dao.add(new RyaStatement(subj3, pred1, one));
dao.add(new RyaStatement(subj3, pred1, two));
dao.add(new RyaStatement(subj3, pred1, three));
dao.add(new RyaStatement(subj3, pred2, one));
dao.add(new RyaStatement(subj3, pred2, two));
dao.add(new RyaStatement(subj3, pred2, three));
dao.add(new RyaStatement(subj4, pred1, one));
dao.add(new RyaStatement(subj4, pred1, two));
dao.add(new RyaStatement(subj4, pred1, three));
dao.add(new RyaStatement(subj4, pred2, one));
dao.add(new RyaStatement(subj4, pred2, two));
dao.add(new RyaStatement(subj4, pred2, three));
//1 join
HashJoin ijoin = new HashJoin(dao.getQueryEngine());
CloseableIteration<RyaStatement, RyaDAOException> join = ijoin.join(null, pred1, pred2);
int count = 0;
while (join.hasNext()) {
RyaStatement next = join.next();
count++;
}
assertEquals(12, count);
join.close();
}
Example 16
| Source File: LeftJoinIterator.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 4 votes |
|
@Override
protected BindingSet getNextElement() throws QueryEvaluationException {
try {
CloseableIteration<BindingSet, QueryEvaluationException> nextRightIter = rightIter;
while (nextRightIter.hasNext() || leftIter.hasNext()) {
BindingSet leftBindings = null;
if (!nextRightIter.hasNext()) {
// Use left arg's bindings in case join fails
leftBindings = leftIter.next();
nextRightIter.close();
nextRightIter = rightIter = strategy.evaluate(join.getRightArg(), leftBindings);
}
while (nextRightIter.hasNext()) {
BindingSet rightBindings = nextRightIter.next();
try {
if (join.getCondition() == null) {
return rightBindings;
} else {
// Limit the bindings to the ones that are in scope for
// this filter
QueryBindingSet scopeBindings = new QueryBindingSet(rightBindings);
scopeBindings.retainAll(scopeBindingNames);
if (strategy.isTrue(join.getCondition(), scopeBindings)) {
return rightBindings;
}
}
} catch (ValueExprEvaluationException e) {
// Ignore, condition not evaluated successfully
}
}
if (leftBindings != null) {
// Join failed, return left arg's bindings
return leftBindings;
}
}
} catch (NoSuchElementException ignore) {
// probably, one of the iterations has been closed concurrently in
// handleClose()
}
return null;
}
Example 17
| Source File: RulesetCopyIT.java From rya with Apache License 2.0 | 4 votes |
|
@Test
public void testRulesetCopyTool() throws Exception {
// Should be copied and are involved in the solution:
final RyaStatement[] solutionStatements = {
statement("test:FullProfessor1", "rdf:type", "test:FullProfessor"),
statement("test:GraduateStudent1", "test:advisor", "test:FullProfessor1"),
statement("test:FullProfessor1", "test:telephone", literal("123-456-7890")),
statement("test:University1", "test:telephone", literal("555")),
statement("test:FullProfessor1", "test:worksFor", "test:University1"),
statement("test:FullProfessor1", "test:hired", literal("2001-01-01T04:01:02.000Z", XMLSchema.DATETIME)),
statement("test:University1", "geo:asWKT", literal("Point(-77.03524 38.889468)", VF.createIRI("http://www.opengis.net/ont/geosparql#wktLiteral")))
};
// These aren't solutions but should be copied:
final RyaStatement[] copyStatements = {
statement("test:FullProfessor2", "rdf:type", "test:FullProfessor"),
statement("test:GraduateStudent1", "test:advisor", "test:AssistantProfessor1"),
statement("test:GraduateStudent1", "test:telephone", literal("555-123-4567")),
statement("test:FullProfessor1", "test:telephone", literal("567-8901")),
statement("test:University1", "test:telephone", literal("800-123-4567"))
};
// Should not be copied:
final RyaStatement[] irrelevantStatements = {
statement("test:GraduateStudent2", "test:advisor", "test:FullProfessor1"),
statement("test:UndergraduateStudent1", "rdf:type", "test:UndergraduateStudent"),
statement("test:UndergraduateStudent2", "rdf:type", "test:UndergraduateStudent"),
statement("test:GraduateStudent1", "rdf:type", "test:GraduateStudent"),
statement("test:GraduateStudent1", "test:name", literal("GraduateStudent1")),
statement("test:UndergraduateStudent2", "test:name", literal("UndergraduateStudent2")),
statement("test:Course1", "test:name", literal("Course1")),
statement("test:GraduateStudent1", "test:emailAddress", literal("[email protected]")),
statement("test:GraduateStudent1", "test:teachingAssistantOf", "test:Course1"),
statement("test:GraduateStudent2", "test:undergraduateDegreeFrom", "test:University1"),
statement("test:AssistantProfessor1", "test:teacherOf", "test:Course1"),
statement("test:FullProfessor1", "test:telephone", literal("xxx-xxx-xxxx")),
statement("test:University1", "test:telephone", literal("0000")),
// If inferencing is disabled, these shouldn't matter:
statement("test:employs", "owl:inverseOf", "test:worksFor"),
statement("test:University1", "test:employs", "test:FullProfessor2")
};
final String query = QUERY_PREFIXES + "SELECT * {\n"
+ " test:GraduateStudent1 test:advisor ?person .\n"
+ " ?person rdf:type test:FullProfessor .\n"
+ " ?person test:telephone ?number .\n"
+ " ?person test:worksFor ?university .\n"
+ " FILTER regex(?number, \"...-...-....\")\n"
+ " ?university geo:asWKT ?place .\n"
+ " FILTER regex(?number, \"^[0-9]\")\n"
+ " ?university test:telephone ?universityNumber\n"
+ " FILTER regex(?universityNumber, \"^5\")\n"
// Would be good to test index functions, but indexing is unreliable (see RYA-72):
+ " ?person test:hired ?time .\n"
// + " FILTER(tempo:after(?time, '2000-01-01T01:01:03-08:00'))\n"
+ "}";
final int parentNamespaceCount = 2;
int childNamespaceCount = 0;
parentDao.addNamespace("ns1", "http://www.example.com/ns1#");
parentDao.addNamespace("ns2", "http://www.example.com/ns2#");
// Run the test
final AccumuloRyaDAO childDao = runRulesetCopyTest(solutionStatements, copyStatements, irrelevantStatements, query, 1, false);
// Verify namespaces were copied
final CloseableIteration<Namespace, RyaDAOException> nsIter = childDao.iterateNamespace();
while (nsIter.hasNext()) {
childNamespaceCount++;
nsIter.next();
}
Assert.assertEquals("Incorrect number of namespaces copied to child:", parentNamespaceCount, childNamespaceCount);
log.info("DONE");
}
Example 18
| Source File: SailUpdateExecutor.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 4 votes |
|
/**
* @param move
* @param uc
* @throws SailException
*/
protected void executeMove(Move move, UpdateContext uc, int maxExecutionTime) throws SailException {
ValueConstant sourceGraph = move.getSourceGraph();
ValueConstant destinationGraph = move.getDestinationGraph();
Resource source = sourceGraph != null ? (Resource) sourceGraph.getValue() : null;
Resource destination = destinationGraph != null ? (Resource) destinationGraph.getValue() : null;
if (source == null && destination == null || (source != null && source.equals(destination))) {
// source and destination are the same, move is a null-operation.
return;
}
// clear destination
final long start = System.currentTimeMillis();
con.clear((Resource) destination);
final long clearTime = (System.currentTimeMillis() - start) / 1000;
if (maxExecutionTime > 0 && clearTime > maxExecutionTime) {
throw new SailException("execution took too long");
}
// remove all statements from source and add them to destination
CloseableIteration<? extends Statement, SailException> statements = null;
try {
statements = con.getStatements(null, null, null, uc.isIncludeInferred(), (Resource) source);
if (maxExecutionTime > 0) {
statements = new TimeLimitIteration<Statement, SailException>(statements,
1000L * (maxExecutionTime - clearTime)) {
@Override
protected void throwInterruptedException() throws SailException {
throw new SailException("execution took too long");
}
};
}
while (statements.hasNext()) {
Statement st = statements.next();
con.addStatement(uc, st.getSubject(), st.getPredicate(), st.getObject(), (Resource) destination);
con.removeStatement(uc, st.getSubject(), st.getPredicate(), st.getObject(), (Resource) source);
}
} finally {
if (statements != null) {
statements.close();
}
}
}
Example 19
| Source File: TupleFunctionFederatedService.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 4 votes |
|
@Override
public final CloseableIteration<BindingSet, QueryEvaluationException> evaluate(Service service,
CloseableIteration<BindingSet, QueryEvaluationException> bindings, String baseUri)
throws QueryEvaluationException {
if (!bindings.hasNext()) {
return new EmptyIteration<>();
}
TupleExpr expr = service.getArg();
if (!(expr instanceof TupleFunctionCall)) {
return new EmptyIteration<>();
}
TupleFunctionCall funcCall = (TupleFunctionCall) expr;
TupleFunction func = tupleFunctionRegistry.get(funcCall.getURI())
.orElseThrow(() -> new QueryEvaluationException("Unknown tuple function '" + funcCall.getURI() + "'"));
List<ValueExpr> argExprs = funcCall.getArgs();
List<CloseableIteration<BindingSet, QueryEvaluationException>> resultIters = new ArrayList<>();
while (bindings.hasNext()) {
BindingSet bs = bindings.next();
Value[] argValues = new Value[argExprs.size()];
for (int i = 0; i < argExprs.size(); i++) {
ValueExpr argExpr = argExprs.get(i);
Value argValue;
if (argExpr instanceof Var) {
argValue = getValue((Var) argExpr, bs);
} else if (argExpr instanceof ValueConstant) {
argValue = ((ValueConstant) argExpr).getValue();
} else {
throw new ValueExprEvaluationException(
"Unsupported ValueExpr for argument " + i + ": " + argExpr.getClass().getSimpleName());
}
argValues[i] = argValue;
}
resultIters
.add(TupleFunctionEvaluationStrategy.evaluate(func, funcCall.getResultVars(), bs, vf, argValues));
}
return (resultIters.size() > 1) ? new DistinctIteration<>(new UnionIteration<>(resultIters))
: resultIters.get(0);
}
Example 20
| Source File: AccumuloIndexSetTest.java From rya with Apache License 2.0 | 4 votes |
|
@Test
public void accumuloIndexSetTestAttemptJoinAcrossTypes() throws Exception {
// Load some Triples into Rya.
final Set<Statement> triples = new HashSet<>();
triples.add( VF.createStatement(VF.createIRI("http://Alice"), VF.createIRI("http://hasAge"), VF.createLiteral(BigInteger.valueOf(14))) );
triples.add( VF.createStatement(VF.createIRI("http://Alice"), VF.createIRI("http://playsSport"), VF.createLiteral("Soccer")) );
triples.add( VF.createStatement(VF.createIRI("http://Bob"), VF.createIRI("http://hasAge"), VF.createLiteral(BigInteger.valueOf(16))) );
triples.add( VF.createStatement(VF.createIRI("http://Bob"), VF.createIRI("http://playsSport"), VF.createLiteral("Soccer")) );
for(final Statement triple : triples) {
ryaConn.add(triple);
}
// Create a PCJ table will include those triples in its results.
final String sparql =
"SELECT ?name ?age " +
"{" +
"?name <http://hasAge> ?age." +
"?name <http://playsSport> \"Soccer\" " +
"}";
final String pcjTableName = new PcjTableNameFactory().makeTableName(prefix, "testPcj");
// Create and populate the PCJ table.
PcjIntegrationTestingUtil.createAndPopulatePcj(ryaConn, accumuloConn, pcjTableName, sparql, new String[]{"name", "age"}, Optional.absent());
final AccumuloIndexSet ais = new AccumuloIndexSet(conf,pcjTableName);
final QueryBindingSet bs1 = new QueryBindingSet();
bs1.addBinding("age", VF.createLiteral("16"));
final QueryBindingSet bs2 = new QueryBindingSet();
bs2.addBinding("age", VF.createLiteral(BigInteger.valueOf(14)));
final Set<BindingSet> bSets = Sets.newHashSet(bs1,bs2);
final CloseableIteration<BindingSet, QueryEvaluationException> results = ais.evaluate(bSets);
final Set<BindingSet> fetchedResults = new HashSet<>();
while(results.hasNext()) {
final BindingSet next = results.next();
fetchedResults.add(next);
}
bs2.addBinding("name", VF.createIRI("http://Alice"));
Assert.assertEquals(Sets.<BindingSet>newHashSet(bs2), fetchedResults);
}
