@Test
public void economizingTriplesEconomizesTheNodes() {
Node s1a = Node.createURI("http://example.com/s1");
Node s1b = Node.createURI("http://example.com/s1");
Node p1a = Node.createURI("http://example.com/p1");
Node p1b = Node.createURI("http://example.com/p1");
Node o1a = Node.createLiteral("55", XSDDatatype.XSDint);
Node o1b = Node.createLiteral("55", XSDDatatype.XSDint);
assertTrue(o1a != o1b);
Triple t1 = new Triple(s1a, p1a, o1a);
Triple t2 = new Triple(s1b, p1b, o1b);
assertTrue(t1 != t2);
assertEquals(t1, t2);
Economizer<Triple> e = new TripleEconomizer();
Triple t3 = e.economize(t1);
Triple t4 = e.economize(t2);
assertTrue(t3.getSubject() == t4.getSubject());
assertTrue(t3.getObject() == t4.getObject());
assertTrue(t3.getPredicate() == t4.getPredicate());
assertTrue(s1a.equals(t3.getSubject()));
assertTrue(p1a.equals(t3.getPredicate()));
assertTrue(o1a.equals(t3.getObject()));
}
public SPhraseSpec getNLForTriple2(Triple t) {
SPhraseSpec p = nlgFactory.createClause();
// process subject
if (t.getSubject().isVariable()) {
p.setSubject(t.getSubject().toString());
} else {
p.setSubject(getNPPhrase(t.getSubject().toString(), false));
}
// process predicate
if (t.getPredicate().isVariable()) {
p.setVerb("be related via " + t.getPredicate().toString() + " to");
} else {
p.setVerb(getVerbFrom(t.getPredicate()));
}
// process object
if (t.getObject().isVariable()) {
p.setObject(t.getObject().toString());
} else if (t.getObject().isLiteral()) {
p.setObject(t.getObject().getLiteralLexicalForm());
} else {
p.setObject(getNPPhrase(t.getObject().toString(), false));
}
p.setFeature(Feature.TENSE, Tense.PRESENT);
return p;
}
/* @see com.hp.hpl.jena.sparql.syntax.ElementVisitorBase#visit(com.hp.hpl.jena.sparql.syntax.ElementTriplesBlock) */
@Override
public void visit(final ElementTriplesBlock elementtriplesblock) {
for (final Triple t : elementtriplesblock.getPattern()) {
try {
if (t.getPredicate().isVariable())
throw new IllegalArgumentException(
"Variables cannot be used in predicate position in ABoxQuery");
Atom atom = null;
final String predURI = t.getPredicate().getURI();
if (RDF.type.getURI().equals(predURI)) {
if (t.getObject().isVariable())
throw new IllegalArgumentException(
"Variables cannot be used as objects of rdf:type triples in ABoxQuery");
final OWLClass c = owlModel.createClass(new URI(t.getObject().getURI()));
final SWRLIndividualObject arg = makeIndividalObject(t.getSubject());
atom = swrlFactory.createClassAtom(c, arg);
} else {
final OWLProperty p = owlModel.getProperty(new URI(predURI));
if (p == null)
throw new IllegalArgumentException(
predURI + " is unknown [Object|Datatype]Property in the backing OWL model.");
else if (p.isDatatypeProperty()) {
final OWLDataProperty dp = owlModel.createDataProperty(p.getURI());
final SWRLIndividualObject arg1 = makeIndividalObject(t.getSubject());
final SWRLDataObject arg2 = makeDataObject(t.getObject());
atom = swrlFactory.createDataPropertyAtom(dp, arg1, arg2);
} else if (p.isObjectProperty()) {
final OWLObjectProperty op = owlModel.createObjectProperty(p.getURI());
final SWRLIndividualObject arg1 = makeIndividalObject(t.getSubject());
final SWRLIndividualObject arg2 = makeIndividalObject(t.getObject());
atom = swrlFactory.createIndividualPropertyAtom(op, arg1, arg2);
}
// else it could be a annotation property, which are not relevant anyway
}
if (atom != null) atoms = atoms.cons(atom);
} catch (final URISyntaxException e) {
throw new IllegalArgumentException(
e.getInput() + " appearing in the query string is not a valid URI!");
}
}
}
public static String str(Triple t) {
return serialize(t.getSubject())
+ " "
+ serialize(t.getPredicate())
+ " "
+ serialize(t.getObject());
}
@Override
public Op transform(OpQuadPattern quadPattern) {
Node gNode = quadPattern.getGraphNode();
Node g = substitute(gNode, binding);
BasicPattern triples = new BasicPattern();
for (Triple triple : quadPattern.getBasicPattern()) {
Node s = substitute(triple.getSubject(), binding);
Node p = substitute(triple.getPredicate(), binding);
Node o = substitute(triple.getObject(), binding);
Triple t = new Triple(s, p, o);
triples.add(t);
}
// Pure quading.
// for ( Iterator iter = quadPattern.getQuads().iterator() ;
// iter.hasNext() ; )
// {
// Quad quad = (Quad)iter.next() ;
// if ( ! quad.getGraph().equals(gNode) )
// throw new
// ARQInternalErrorException("Internal error: quads block is not uniform over the graph node")
// ;
// Node s = substitute(quad.getSubject(), binding) ;
// Node p = substitute(quad.getPredicate(), binding) ;
// Node o = substitute(quad.getObject(), binding) ;
// Triple t = new Triple(s, p, o) ;
// triples.add(t) ;
// }
return new OpQuadPattern(g, triples);
}
private static RdfStream getRdfStreamFromResource(final String resourcePath, final Lang lang) {
final Model model = createDefaultModel();
RDFDataMgr.read(model, WebACRolesProviderTest.class.getResourceAsStream(resourcePath), lang);
final List<Triple> triples = new ArrayList<>();
model
.listStatements()
.forEachRemaining(
x -> {
final Triple t = x.asTriple();
if (t.getObject().isURI() && t.getObject().getURI().startsWith(FEDORA_URI_PREFIX)) {
triples.add(
new Triple(
t.getSubject(),
t.getPredicate(),
createURI(
FEDORA_PREFIX
+ t.getObject().getURI().substring(FEDORA_URI_PREFIX.length()))));
} else {
triples.add(t);
}
});
return new RdfStream(triples);
}
/**
* Returns a collection of RDFStatements that match the described subject
*
* @param subject Subject
* @return collection of RDFStatements
*/
public Collection<RDFStatement> getStatements(String subject) {
if (subject == null || subject.isEmpty()) {
return null;
}
List<RDFStatement> statement = null;
try {
// define a describe query
String query = String.format("DESCRIBE %s FROM < %s >", subject, this.graphName);
logger.debug("Query: \n{}", query);
Query sparqlQuery = QueryFactory.create(query);
VirtuosoQueryExecution vqe = VirtuosoQueryExecutionFactory.create(sparqlQuery, this.graph);
// execute the query and get the graph
Model model = vqe.execDescribe();
Graph queriedGraph = model.getGraph();
// itreate over the retrieved triples, and place them inside a list
ExtendedIterator<Triple> iter = queriedGraph.find(Node.ANY, Node.ANY, Node.ANY);
statement = new ArrayList<>();
while (iter.hasNext()) {
Triple t = (Triple) iter.next();
RDFStatement stmt =
new RDFStatement(
t.getSubject().toString(), t.getPredicate().toString(), t.getObject().toString());
statement.add(stmt);
}
} catch (Exception ex) {
logger.error("Exception occured while querying for statements", ex);
}
return statement;
}
private static int getIndex(Triple triple) {
String u = triple.getPredicate().getURI();
// Must be _nnn.
Matcher m = pattern.matcher(u);
if (!m.find()) return NOT_FOUND;
String index = m.group(1);
return Integer.parseInt(index);
}
public static void outputPlain(IndentedWriter out, Triple triple, SerializationContext naming) {
// No tag
output(out, triple.getSubject(), naming);
out.print(" ");
output(out, triple.getPredicate(), naming);
out.print(" ");
output(out, triple.getObject(), naming);
}
@Override
public void addGraph(Node gn, Graph g) {
// Convert to quads.
// super.addGraph(gn, g) ;
ExtendedIterator<Triple> iter = g.find(Node.ANY, Node.ANY, Node.ANY);
for (; iter.hasNext(); ) {
Triple t = iter.next();
add(gn, t.getSubject(), t.getPredicate(), t.getObject());
}
}
protected static String sparqlTriple(Triple triple) {
StringBuffer serializedTriple = new StringBuffer();
serializedTriple.append(sparqlNodeUpdate(triple.getSubject(), ""));
serializedTriple.append(" ");
serializedTriple.append(sparqlNodeUpdate(triple.getPredicate(), ""));
serializedTriple.append(" ");
serializedTriple.append(sparqlNodeUpdate(triple.getObject(), ""));
serializedTriple.append(" .");
return serializedTriple.toString();
}
public SPhraseSpec getNLForTriple(Triple t) {
SPhraseSpec p = nlgFactory.createClause();
// process predicate then return subject is related to
if (t.getPredicate().isVariable()) {
if (t.getSubject().isVariable()) {
p.setSubject(t.getSubject().toString());
} else {
p.setSubject(getNPPhrase(t.getSubject().toString(), false));
}
p.setVerb("be related via " + t.getPredicate().toString() + " to");
if (t.getObject().isVariable()) {
p.setObject(t.getObject().toString());
} else {
p.setObject(getNPPhrase(t.getObject().toString(), false));
}
} else {
NLGElement subj;
if (t.getSubject().isVariable()) {
subj = nlgFactory.createWord(t.getSubject().toString(), LexicalCategory.NOUN);
} else {
subj =
nlgFactory.createWord(
uriConverter.convert(t.getSubject().toString()), LexicalCategory.NOUN);
}
// subj.setFeature(Feature.POSSESSIVE, true);
// PhraseElement np = nlgFactory.createNounPhrase(subj,
// getEnglishLabel(t.getPredicate().toString()));
p.setSubject(
realiser.realise(subj) + "\'s " + uriConverter.convert(t.getPredicate().toString()));
p.setVerb("be");
if (t.getObject().isVariable()) {
p.setObject(t.getObject().toString());
} else if (t.getObject().isLiteral()) {
p.setObject(t.getObject().getLiteralLexicalForm());
} else {
p.setObject(getNPPhrase(t.getObject().toString(), false));
}
}
p.setFeature(Feature.TENSE, Tense.PRESENT);
return p;
}
public DBPattern(Triple pat, Mapping varMap) {
pattern = pat;
sources = new ArrayList();
isBusy = false;
isConnected = false;
isStmt = isReif = false;
S = nodeToElement(pattern.getSubject(), varMap);
P = nodeToElement(pattern.getPredicate(), varMap);
O = nodeToElement(pattern.getObject(), varMap);
Scost = elementCost(S);
Pcost = elementCost(P);
Ocost = elementCost(O);
}
ReificationStatementMask(Triple t) {
mask = HasNada;
Node p = t.getPredicate();
if (p != null) {
if (p.equals(RDF.Nodes.subject)) mask = HasSubj;
else if (p.equals(RDF.Nodes.predicate)) mask = HasPred;
else if (p.equals(RDF.Nodes.object)) mask = HasObj;
else if (p.equals(RDF.Nodes.type)) {
Node o = t.getObject();
if (o.equals(RDF.Nodes.Statement)) mask = HasType;
}
}
}
public OntModel applyRenamings() {
OntModel result = ModelFactory.createMem();
Graph graph = result.getGraph();
Iterator it = model.getGraph().find(Triple.ANY);
while (it.hasNext()) {
Triple t = (Triple) it.next();
Node s = t.getSubject().isURI() ? rename(t.getSubject()) : null;
Node o = t.getObject().isURI() ? rename(t.getObject()) : null;
if (s != null || o != null)
t =
Triple.create(
s != null ? s : t.getSubject(), t.getPredicate(), o != null ? o : t.getObject());
graph.add(t);
}
return result;
}
/**
* Return an equivalent triple pattern with standardized variable names (?s, ?p, ?o). This
* method is needed to ensure that functionally equivalent triple patterns do not get assigned
* to different entries in the cache.
*
* @param triplePattern
* @return a Triple that is equivalent to triplePattern, but with standard variable names
*/
protected Triple standardizeVarNames(Triple triplePattern) {
Node s = triplePattern.getSubject();
Node p = triplePattern.getPredicate();
Node o = triplePattern.getObject();
// make the key consistent, regardless of user's chosen variable names
if (s.isVariable()) {
s = NodeCreateUtils.create("?s");
}
if (p.isVariable()) {
p = NodeCreateUtils.create("?p");
}
if (o.isVariable()) {
o = NodeCreateUtils.create("?o");
}
return new Triple(s, p, o);
}
public static Triple substitute(Triple triple, Binding binding, int index) {
if (isNotNeeded(binding)) return triple;
Node s = triple.getSubject();
Node p = triple.getPredicate();
Node o = triple.getObject();
Node s1 = substitute(s, binding);
Node p1 = substitute(p, binding);
Node o1 = substitute(o, binding);
Triple t = triple;
s1 = generateCountableNode(index, s, s1);
p1 = generateCountableNode(index, p, p1);
o1 = generateCountableNode(index, o, o1);
t = new Triple(s1, p1, o1);
return t;
}
@Override
public void delete(Graph g) {
Model[] model = separateStatementsWithBlankNodes(g);
deleteModel(model[1] /*statements without blank nodes*/);
// replace blank nodes in remaining statements with variables
StringBuffer patternBuff = new StringBuffer();
Iterator<Triple> tripIt = g.find(null, null, null);
while (tripIt.hasNext()) {
Triple t = tripIt.next();
patternBuff.append(SparqlGraph.sparqlNodeDelete(t.getSubject(), null));
patternBuff.append(" ");
patternBuff.append(SparqlGraph.sparqlNodeDelete(t.getPredicate(), null));
patternBuff.append(" ");
patternBuff.append(SparqlGraph.sparqlNodeDelete(t.getObject(), null));
patternBuff.append(" .\n");
}
StringBuffer queryBuff = new StringBuffer();
String graphURI = graph.getGraphURI();
queryBuff.append(
"DELETE { " + ((graphURI != null) ? "GRAPH <" + graphURI + "> { " : "") + " \n");
queryBuff.append(patternBuff);
if (graphURI != null) {
queryBuff.append(" } \n");
}
queryBuff.append("} WHERE { \n");
if (graphURI != null) {
queryBuff.append(" GRAPH <" + graphURI + "> { \n");
}
queryBuff.append(patternBuff);
if (graphURI != null) {
queryBuff.append(" } \n");
}
queryBuff.append("} \n");
log.debug(queryBuff.toString());
graph.executeUpdate(queryBuff.toString());
}
private static int countContainerMember(
Graph graph, Node container, Node containerType, Node member, boolean stopEarly) {
if (graph == null) {
Log.warn(GraphContainerUtils.class, "containerMember called with null graph");
return 0;
}
if (container == null) {
Log.warn(GraphContainerUtils.class, "containerMember called with null list");
return 0;
}
if (member == null) {
Log.warn(GraphContainerUtils.class, "containerMember called with null member");
return 0;
}
if (!isContainer(graph, container, containerType)) return 0;
int count = 0;
ExtendedIterator<Triple> iter = graph.find(container, Node.ANY, member);
try {
for (; iter.hasNext(); ) {
Triple t = iter.next();
Node p = t.getPredicate();
String u = p.getURI();
if (u.matches(membershipPattern)) {
count++;
if (stopEarly) return count;
}
}
} finally {
iter.close();
}
return count;
}
public static void addVarsFromTriple(Collection<Var> acc, Triple t) {
addVar(acc, t.getSubject());
addVar(acc, t.getPredicate());
addVar(acc, t.getObject());
}
/** Delete a triple - return true if it was deleted, false if it didn't exist */
public boolean delete(Triple triple) {
return table.deleteRow(triple.getSubject(), triple.getPredicate(), triple.getObject());
}
public boolean add(Triple triple) {
return table.addRow(triple.getSubject(), triple.getPredicate(), triple.getObject());
}
public static TripleWithHash create(int n, String s) {
Triple t = triple(s);
return new TripleWithHash(n, t.getSubject(), t.getPredicate(), t.getObject());
}
public double match(Triple t) {
return match(
Item.createNode(t.getSubject()),
Item.createNode(t.getPredicate()),
Item.createNode(t.getObject()));
}
public List<AlphaResultUnion> calculateAlphaSTG(
Collection<Triple> triples, AbstractConceptMapping cm) throws Exception {
List<AlphaResultUnion> alphaResultUnionList = new Vector<AlphaResultUnion>();
Triple firstTriple = triples.iterator().next();
Node tpSubject = firstTriple.getSubject();
SQLLogicalTable alphaSubject = this.calculateAlphaSubject(tpSubject, cm);
// String logicalTableAlias = cm.getLogicalTableAlias();
String logicalTableAlias = alphaSubject.getAlias();
// if(logicalTableAlias == null || logicalTableAlias.equals("")) {
// cm.setLogicalTableAlias(alphaSubject.getAlias());
// }
// mapping projection of corresponding predicates
for (Triple tp : triples) {
Node tpPredicate = tp.getPredicate();
List<SQLJoinTable> alphaPredicateObjects = new Vector<SQLJoinTable>();
List<SQLLogicalTable> alphaPredicateObjects2 = new Vector<SQLLogicalTable>();
if (tpPredicate.isURI()) {
String tpPredicateURI = tpPredicate.getURI();
Collection<String> mappedClassURIs = cm.getMappedClassURIs();
boolean processableTriplePattern = true;
if (tp.getObject().isURI()) {
String objectURI = tp.getObject().getURI();
if (RDF.type.getURI().equals(tpPredicateURI) && mappedClassURIs.contains(objectURI)) {
processableTriplePattern = false;
}
}
if (processableTriplePattern) {
List<SQLJoinTable> alphaPredicateObjectAux =
calculateAlphaPredicateObjectSTG(tp, cm, tpPredicateURI, logicalTableAlias);
if (alphaPredicateObjectAux != null) {
alphaPredicateObjects.addAll(alphaPredicateObjectAux);
}
List<SQLLogicalTable> alphaPredicateObjectAux2 =
calculateAlphaPredicateObjectSTG2(tp, cm, tpPredicateURI, logicalTableAlias);
if (alphaPredicateObjectAux2 != null) {
alphaPredicateObjects2.addAll(alphaPredicateObjectAux2);
}
AlphaResult alphaResult =
new AlphaResult(alphaSubject, alphaPredicateObjects, tpPredicateURI);
// alphaResult.setAlphaPredicateObjects2(alphaPredicateObjectAux2);
AlphaResultUnion alphaTP = new AlphaResultUnion(alphaResult);
alphaResultUnionList.add(alphaTP);
}
} else if (tpPredicate.isVariable()) {
Collection<AbstractPropertyMapping> pms = cm.getPropertyMappings();
AlphaResultUnion alphaTP = new AlphaResultUnion();
for (AbstractPropertyMapping pm : pms) {
String tpPredicateURI = pm.getMappedPredicateName();
List<SQLJoinTable> alphaPredicateObjectAux =
calculateAlphaPredicateObjectSTG(tp, cm, tpPredicateURI, logicalTableAlias);
if (alphaPredicateObjectAux != null) {
alphaPredicateObjects.addAll(alphaPredicateObjectAux);
}
List<SQLLogicalTable> alphaPredicateObjectAux2 =
calculateAlphaPredicateObjectSTG2(tp, cm, tpPredicateURI, logicalTableAlias);
if (alphaPredicateObjectAux2 != null) {
alphaPredicateObjects2.addAll(alphaPredicateObjectAux2);
}
AlphaResult alphaResult =
new AlphaResult(alphaSubject, alphaPredicateObjects, tpPredicateURI);
// alphaResult.setAlphaPredicateObjects2(alphaPredicateObjectAux2);
alphaTP.add(alphaResult);
}
if (alphaTP != null) {
alphaResultUnionList.add(alphaTP);
}
} else {
String errorMessage = "Predicate has to be either an URI or a variable";
throw new QueryTranslationException(errorMessage);
}
}
return alphaResultUnionList;
}
