// keyToUse is the URI of the next instance that can be found in
// myRepository
public SpinInferencingRuleImpl(
final Collection<Statement> inputStatements, final URI keyToUse, final int modelVersion)
throws OpenRDFException {
super(inputStatements, keyToUse, modelVersion);
final Collection<Statement> currentUnrecognisedStatements = this.resetUnrecognisedStatements();
for (final Statement nextStatement : currentUnrecognisedStatements) {
if (nextStatement.getPredicate().equals(RDF.TYPE)
&& nextStatement
.getObject()
.equals(SpinInferencingRuleSchema.getSpinInferencingRuleTypeUri())) {
if (SpinInferencingRuleImpl.TRACE) {
SpinInferencingRuleImpl.log.trace(
"SparqlNormalisationRuleImpl: found valid type predicate for URI: " + keyToUse);
}
// isValid = true;
this.setKey(keyToUse);
} else {
if (SpinInferencingRuleImpl.DEBUG) {
SpinInferencingRuleImpl.log.debug(
"SparqlNormalisationRuleImpl: unrecognisedStatement nextStatement: "
+ nextStatement.toString());
}
this.addUnrecognisedStatement(nextStatement);
}
}
if (SpinInferencingRuleImpl.DEBUG) {
SpinInferencingRuleImpl.log.debug(
"SparqlNormalisationRuleImpl constructor: toString()=" + this.toString());
}
}
/* (non-Javadoc)
* @see org.openrdf.rio.helpers.RDFHandlerBase#handleStatement(org.openrdf.model.Statement)
*/
@Override
public void handleStatement(final Statement stmt) throws RDFHandlerException {
final String predicate = stmt.getPredicate().stringValue();
if (!predicate.startsWith("http://psi.ontopia.net/rdf2tm/#")) {
return;
}
final String subject = stmt.getSubject().stringValue();
if (!(stmt.getObject() instanceof URI)) {
throw new RDFHandlerException(
new MIOException("The object of the RDF mapping must be an IRI"));
}
final String object = stmt.getObject().stringValue();
if (RDF2TM.MAPS_TO.equals(predicate)) {
if (RDF2TM.BASENAME.equals(object)) {
getMapping(subject).kind = NAME;
} else if (RDF2TM.OCCURRENCE.equals(object)) {
getMapping(subject).kind = OCCURRENCE;
} else if (RDF2TM.INSTANCE_OF.equals(object)) {
getMapping(subject).kind = TYPE_INSTANCE;
} else if (RDF2TM.ASSOCIATION.equals(object)) {
getMapping(subject).kind = ASSOCIATION;
} else if (RDF2TM.SUBJECT_IDENTIFIER.equals(object)) {
try {
_handler.handleSubjectIdentifier(subject);
} catch (MIOException ex) {
throw new RDFHandlerException(ex);
}
} else if (RDF2TM.SUBJECT_LOCATOR.equals(object)) {
try {
_handler.handleSubjectLocator(subject);
} catch (MIOException ex) {
throw new RDFHandlerException(ex);
}
} else if (RDF2TM.SOURCE_LOCATOR.equals(object)) {
try {
_handler.handleItemIdentifier(subject);
} catch (MIOException ex) {
throw new RDFHandlerException(ex);
}
} else {
throw new RDFHandlerException(
new MIOException(
"Unknown object of a rtm:maps-to mapping. Object: <" + object + ">"));
}
} else if (RDF2TM.TYPE.equals(predicate)) {
getMapping(subject).type = object;
} else if (RDF2TM.IN_SCOPE.equals(predicate)) {
Mapping mapping = getMapping(subject);
if (mapping.scope == null) {
mapping.scope = new ArrayList<String>();
}
mapping.scope.add(object);
} else if (RDF2TM.SUBJECT_ROLE.equals(predicate)) {
getMapping(subject).subject = object;
} else if (RDF2TM.OBJECT_ROLE.equals(predicate)) {
getMapping(subject).object = object;
} else {
throw new RDFHandlerException(new MIOException("Unknown predicate <" + predicate + ">"));
}
}
private static Set<JoinCondition> extractJoinConditions(
SesameDataSet r2rmlMappingGraph, Resource object)
throws InvalidR2RMLStructureException, InvalidR2RMLSyntaxException {
log.debug("[RMLMappingFactory:extractJoinConditions] Extract join conditions..");
Set<JoinCondition> result = new HashSet<JoinCondition>();
// Extract predicate-object maps
URI p = r2rmlMappingGraph.URIref(Vocab.R2RML_NAMESPACE + R2RMLTerm.JOIN_CONDITION);
List<Statement> statements = r2rmlMappingGraph.tuplePattern(object, p, null);
try {
for (Statement statement : statements) {
Resource jc = (Resource) statement.getObject();
String child = extractLiteralFromTermMap(r2rmlMappingGraph, jc, R2RMLTerm.CHILD);
String parent = extractLiteralFromTermMap(r2rmlMappingGraph, jc, R2RMLTerm.PARENT);
if (parent == null || child == null) {
throw new InvalidR2RMLStructureException(
"[RMLMappingFactory:extractReferencingObjectMap] "
+ object.stringValue()
+ " must have exactly two properties child and parent. ");
}
result.add(new StdJoinCondition(child, parent));
}
} catch (ClassCastException e) {
throw new InvalidR2RMLStructureException(
"[RMLMappingFactory:extractJoinConditions] "
+ "A resource was expected in object of predicateMap of "
+ object.stringValue());
}
log.debug("[RMLMappingFactory:extractJoinConditions] Extract join conditions done.");
return result;
}
protected List<Statement> nextNonAggregateDocument() throws QueryEvaluationException {
try {
List<Statement> document = new ArrayList<Statement>();
if (!statefulHasNext()) return document;
Statement stmt = peekNextStatement();
if (stmt == null) return document;
Resource subject = stmt.getSubject();
Resource current = subject;
document.add(stmt);
while ((current.equals(subject) && statefulHasNext())) {
advance();
current = subject;
stmt = peekNextStatement();
if (stmt != null) {
subject = stmt.getSubject();
if (subject.equals(current)) document.add(stmt);
} else subject = null;
}
// System.out.println(document);
return document;
} catch (Exception e) {
throw new QueryEvaluationException(e);
}
}
private void removeInforming(
URI activity, URI entity, Resource subj, URI pred, Value obj, Resource... contexts)
throws SailException {
if (contexts != null && contexts.length == 0) {
CloseableIteration<? extends Statement, SailException> stmts;
stmts = super.getStatements(subj, pred, obj, false, contexts);
try {
while (stmts.hasNext()) {
Statement st = stmts.next();
Resource ctx = st.getContext();
subj = st.getSubject();
pred = st.getPredicate();
obj = st.getObject();
removeInformingGraph(activity, entity, subj, pred, obj, ctx);
}
} finally {
stmts.close();
}
} else if (contexts == null) {
removeInformingGraph(activity, entity, subj, pred, obj, null);
} else {
for (Resource ctx : contexts) {
removeInformingGraph(activity, entity, subj, pred, obj, ctx);
}
}
}
/**
* Construct TriplesMap objects rule. A triples map is represented by a resource that references
* the following other resources : - It must have exactly one subject map * using the
* rr:subjectMap property.
*
* @param r2rmlMappingGraph
* @return
* @throws InvalidR2RMLStructureException
*/
private static Map<Resource, TriplesMap> extractTripleMapResources(
SesameDataSet r2rmlMappingGraph) throws InvalidR2RMLStructureException {
// A triples map is represented by a resource that references the
// following other resources :
// - It must have exactly one subject map
Map<Resource, TriplesMap> triplesMapResources = new HashMap<Resource, TriplesMap>();
URI p = r2rmlMappingGraph.URIref(Vocab.R2RML_NAMESPACE + Vocab.R2RMLTerm.SUBJECT_MAP);
List<Statement> statements = r2rmlMappingGraph.tuplePattern(null, p, null);
if (statements.isEmpty()) {
log.warn("[RMLMappingFactory:extractRMLMapping] No subject statement found. Exit...");
} /*
* throw new InvalidR2RMLStructureException(
* "[RMLMappingFactory:extractRMLMapping]" +
* " One subject statement is required.");
*/ else // No subject map, Many shortcuts subjects
{
for (Statement s : statements) {
List<Statement> otherStatements = r2rmlMappingGraph.tuplePattern(s.getSubject(), p, null);
if (otherStatements.size() > 1) {
throw new InvalidR2RMLStructureException(
"[RMLMappingFactory:extractRMLMapping] "
+ s.getSubject()
+ " has many subjectMap "
+ "(or subject) but only one is required.");
} else // First initialization of triples map : stored to link them
// with referencing objects
{
triplesMapResources.put(
s.getSubject(), new StdTriplesMap(null, null, null, s.getSubject().stringValue()));
}
}
}
return triplesMapResources;
}
private void populateBindingSets(
List<QueryBindingSet> results, Var predVar, Var objVar, Collection<Statement> stmts) {
if (predVar == null || objVar == null || stmts == null || stmts.size() == 0) return;
List<QueryBindingSet> copyOf = new ArrayList<QueryBindingSet>(results);
int i = copyOf.size();
int j = 0;
for (Iterator<Statement> iter = stmts.iterator(); iter.hasNext(); ) {
Statement st = iter.next();
int k = 0;
for (QueryBindingSet result : results) {
if (!result.hasBinding(predVar.getName()) || k >= i) {
String name = predVar.getName();
org.openrdf.model.Value val = st.getPredicate();
addBinding(result, name, val);
}
if (!result.hasBinding(objVar.getName()) || k >= i)
addBinding(result, objVar.getName(), st.getObject());
k++;
}
i = copyOf.size() + j * copyOf.size();
j++;
if (iter.hasNext()) {
// copy results
for (QueryBindingSet copy : copyOf) {
results.add(new QueryBindingSet(copy));
}
}
}
}
private boolean isObsolete(Resource ctx) throws SailException {
CloseableIteration<? extends Statement, SailException> stmts;
stmts = super.getStatements(null, null, null, true, ctx);
try {
while (stmts.hasNext()) {
Statement st = stmts.next();
URI pred = st.getPredicate();
Value obj = st.getObject();
String ns = pred.getNamespace();
if (Audit.NAMESPACE.equals(ns) || PROV.equals(ns) || AUDIT_2012.equals(ns)) continue;
if (RDF.SUBJECT.equals(pred) || RDF.PREDICATE.equals(pred) || RDF.OBJECT.equals(pred))
continue;
if (RDF.TYPE.equals(pred) && obj instanceof URI) {
ns = ((URI) obj).getNamespace();
if (Audit.NAMESPACE.equals(ns)
|| PROV.equals(ns)
|| AUDIT_2012.equals(ns)
|| RDF.NAMESPACE.equals(ns)) continue;
}
return false;
}
} finally {
stmts.close();
}
return true;
}
@Override
public void handleStatement(Statement st) {
String stSubject = st.getSubject().toString();
String stPredicate = st.getPredicate().toString();
String stObject = st.getObject().toString();
saveStatement(stSubject, stPredicate, stObject);
}
/** **********************PROPERTIES************************ */
public Collection<String> getAllObjectProperties() {
Set<String> allObjectProperties = new HashSet<>();
// check if property is object property
URI rangeOfUri = this.repository.getValueFactory().createURI(rangeAsText);
try {
RepositoryConnection repoConn = this.repository.getConnection();
RepositoryResult<Statement> results = repoConn.getStatements(null, rangeOfUri, null, false);
while (results.hasNext()) {
Statement tempResult = results.next();
// if range is not rdf:resource literal means that is an object property
if (!tempResult.getObject().stringValue().equals(literalAsText)) {
allObjectProperties.add(tempResult.getSubject().stringValue());
}
}
repoConn.close();
} catch (RepositoryException ex) {
}
URI typeOfUri = this.repository.getValueFactory().createURI(typeOfUriAsText);
URI objectProperyUri = this.repository.getValueFactory().createURI(owlObjectProperyUriAsText);
try {
RepositoryConnection repoConn = this.repository.getConnection();
RepositoryResult<Statement> results =
repoConn.getStatements(null, typeOfUri, objectProperyUri, false);
while (results.hasNext()) {
allObjectProperties.add(results.next().getSubject().stringValue());
}
repoConn.close();
} catch (RepositoryException ex) {
}
return allObjectProperties;
}
@Override
public void handleStatement(Statement st) throws RDFHandlerException {
if (!writingStarted) {
throw new RuntimeException("Document writing has not yet been started");
}
try {
// SUBJECT
NTriplesUtil.append(st.getSubject(), writer);
writer.write(" ");
// PREDICATE
NTriplesUtil.append(st.getPredicate(), writer);
writer.write(" ");
// OBJECT
NTriplesUtil.append(st.getObject(), writer);
if (null != st.getContext()) {
writer.write(" ");
NTriplesUtil.append(st.getContext(), writer);
}
writer.write(" .\n");
} catch (IOException e) {
throw new RDFHandlerException(e);
}
}
private int findSavedIndex(ReloRdfRepository repo, Resource codeRes) {
Statement indexWhenSavedStmt = repo.getStatement(codeRes, RJCore.index, null);
int indexWhenSaved =
(indexWhenSavedStmt == null || indexWhenSavedStmt.getObject() == null)
? -1
: Integer.parseInt(indexWhenSavedStmt.getObject().toString());
return indexWhenSaved;
}
private Object encodeStatement(final Statement statement) {
return SerializerAvro.newGenericRecord(
Schemas.STATEMENT,
encodeIdentifier(statement.getSubject()),
encodeIdentifier(statement.getPredicate()), //
encodeValue(statement.getObject()), //
encodeIdentifier(statement.getContext()));
}
// TODO: bnode check is too weak, introduce graph omomorphism check.
protected void assertContains(Statement statement) throws RepositoryException {
Assert.assertTrue(
"Cannot find statement " + statement + " in model.",
conn.hasStatement(
statement.getSubject() instanceof BNode ? null : statement.getSubject(),
statement.getPredicate(),
statement.getObject() instanceof BNode ? null : statement.getObject(),
false));
}
@Override
public void overlay(Model m, IEngine engine) {
labelcache.setEngine(engine);
List<Value[]> valdata = new ArrayList<>();
for (Statement s : m) {
valdata.add(new Value[] {s.getSubject(), s.getPredicate(), s.getObject()});
}
overlay(valdata, Arrays.asList("Subject", "Predicate", "Object"), engine);
}
@Override
public boolean equals(Object other) {
if (this == other) return true;
if (other instanceof Statement) {
Statement otherSt = (Statement) other;
return this.hashCode() == otherSt.hashCode();
} else {
return false;
}
}
/**
* Compares two models, defined by two statement collections, and returns the difference between
* the first and the second model (that is, all statements that are present in model1 but not in
* model2). Blank node IDs are not relevant for model equality, they are mapped from one model to
* the other by using the attached properties. *
*
* <p><b>NOTE: this algorithm is currently broken; it doesn't actually map blank nodes between the
* two models.</b>
*
* @return The collection of statements that is the difference between model1 and model2.
*/
public static Collection<? extends Statement> difference(
Collection<? extends Statement> model1, Collection<? extends Statement> model2) {
// Create working copies
LinkedList<Statement> copy1 = new LinkedList<Statement>(model1);
LinkedList<Statement> copy2 = new LinkedList<Statement>(model2);
Collection<Statement> result = new ArrayList<Statement>();
// Compare statements that don't contain bNodes
Iterator<Statement> iter1 = copy1.iterator();
while (iter1.hasNext()) {
Statement st = iter1.next();
if (st.getSubject() instanceof BNode || st.getObject() instanceof BNode) {
// One or more of the statement's components is a bNode,
// these statements are handled later
continue;
}
// Try to remove the statement from model2
boolean removed = copy2.remove(st);
if (!removed) {
// statement was not present in model2 and is part of the difference
result.add(st);
}
iter1.remove();
}
// FIXME: this algorithm is broken: bNodeMapping is assumed to contain a
// bnode mapping while in reallity it is an empty map
HashMap<BNode, BNode> bNodeMapping = new HashMap<BNode, BNode>();
// mapBlankNodes(copy1, copy2, bNodeMapping, 0);
for (Statement st1 : copy1) {
boolean foundMatch = false;
for (Statement st2 : copy2) {
if (statementsMatch(st1, st2, bNodeMapping)) {
// Found a matching statement
foundMatch = true;
break;
}
}
if (!foundMatch) {
// No statement matching st1 was found in model2, st1 is part of
// the difference.
result.add(st1);
}
}
return result;
}
private URI getTrx() throws SailException {
if (trx == null) {
trx = sail.nextTransaction();
synchronized (metadata) {
for (Statement st : metadata) {
storeStatement(st.getSubject(), st.getPredicate(), st.getObject(), st.getContext());
}
metadata.clear();
}
}
return trx;
}
protected BindingSet populateBindingSet(Statement st, List<Map.Entry<Var, Var>> predObjVar) {
QueryBindingSet result = new QueryBindingSet(bindings);
for (Map.Entry<Var, Var> entry : predObjVar) {
Var predVar = entry.getKey();
Var objVar = entry.getValue();
if (predVar != null && !result.hasBinding(predVar.getName()))
result.addBinding(predVar.getName(), st.getPredicate());
if (objVar != null && !result.hasBinding(objVar.getName()))
result.addBinding(objVar.getName(), st.getObject());
}
return result;
}
/**
* Returns the blank subject matching the pattern <code>(_:b p o)</code>, it is expected to exists
* and be just one.
*
* @param p predicate.
* @param o object.
* @return the matching blank subject.
* @throws RepositoryException
*/
protected Resource findExactlyOneBlankSubject(URI p, Value o) throws RepositoryException {
RepositoryResult<Statement> it = conn.getStatements(null, p, o, false);
try {
Assert.assertTrue(getFailedExtractionMessage(), it.hasNext());
Statement stmt = it.next();
Resource result = stmt.getSubject();
Assert.assertTrue(getFailedExtractionMessage(), result instanceof BNode);
Assert.assertFalse(getFailedExtractionMessage(), it.hasNext());
return result;
} finally {
it.close();
}
}
private void compareGraphs(Set<Statement> queryResult, Set<Statement> expectedResult)
throws Exception {
if (!ModelUtil.equals(expectedResult, queryResult)) {
// Don't use RepositoryUtil.difference, it reports incorrect diffs
/*
* Collection<? extends Statement> unexpectedStatements =
* RepositoryUtil.difference(queryResult, expectedResult);
* Collection<? extends Statement> missingStatements =
* RepositoryUtil.difference(expectedResult, queryResult);
* StringBuilder message = new StringBuilder(128);
* message.append("\n=======Diff: "); message.append(getName());
* message.append("========================\n"); if
* (!unexpectedStatements.isEmpty()) { message.append("Unexpected
* statements in result: \n"); for (Statement st :
* unexpectedStatements) { message.append(st.toString());
* message.append("\n"); } message.append("============="); for (int
* i = 0; i < getName().length(); i++) { message.append("="); }
* message.append("========================\n"); } if
* (!missingStatements.isEmpty()) { message.append("Statements
* missing in result: \n"); for (Statement st : missingStatements) {
* message.append(st.toString()); message.append("\n"); }
* message.append("============="); for (int i = 0; i <
* getName().length(); i++) { message.append("="); }
* message.append("========================\n"); }
*/
StringBuilder message = new StringBuilder(128);
message.append("\n============ ");
message.append(getName());
message.append(" =======================\n");
message.append("Expected result: \n");
for (Statement st : expectedResult) {
message.append(st.toString());
message.append("\n");
}
message.append("=============");
StringUtil.appendN('=', getName().length(), message);
message.append("========================\n");
message.append("Query result: \n");
for (Statement st : queryResult) {
message.append(st.toString());
message.append("\n");
}
message.append("=============");
StringUtil.appendN('=', getName().length(), message);
message.append("========================\n");
logger.error(message.toString());
fail(message.toString());
}
}
/**
* Returns all the objects matching the pattern <code>(s p _)</code>.
*
* @param s predicate.
* @param p predicate.
* @return list of matching objects.
* @throws RepositoryException
*/
protected List<Value> findObjects(Resource s, URI p) throws RepositoryException {
RepositoryResult<Statement> it = conn.getStatements(s, p, null, false);
List<Value> objects = new ArrayList<Value>();
try {
Statement statement;
while (it.hasNext()) {
statement = it.next();
objects.add(statement.getObject());
}
} finally {
it.close();
}
return objects;
}
/**
* Returns all the subjects matching the pattern <code>(s? p o)</code>.
*
* @param p predicate.
* @param o object.
* @return list of matching subjects.
* @throws RepositoryException
*/
protected List<Resource> findSubjects(URI p, Value o) throws RepositoryException {
RepositoryResult<Statement> it = conn.getStatements(null, p, o, false);
List<Resource> subjects = new ArrayList<Resource>();
try {
Statement statement;
while (it.hasNext()) {
statement = it.next();
subjects.add(statement.getSubject());
}
} finally {
it.close();
}
return subjects;
}
public void graphQuery()
throws RepositoryException, MalformedQueryException, QueryEvaluationException {
String queryString = "CONSTRUCT {?x a ?y} WHERE { ?x a ?y} ";
// String queryString =
// "SELECT ?x ?y WHERE { ?x a onto:Person. ?x onto:age ?y } ";
GraphQuery graphQuery = (con).prepareGraphQuery(QueryLanguage.SPARQL, queryString);
GraphQueryResult result = graphQuery.evaluate();
while (result.hasNext()) {
Statement st = result.next();
System.out.println(st.toString());
}
result.close();
}
private List<XMLGregorianCalendar> getInstantaneousTimes(List<Statement> statements) {
List<XMLGregorianCalendar> times = new ArrayList<XMLGregorianCalendar>();
for (Statement statement : statements) {
QualifiedName predQ = convertURIToQualifiedName(statement.getPredicate());
Value value = statement.getObject();
if (value instanceof Literal) {
if (predQ.equals(onto.QualifiedName_PROVO_atTime)) {
times.add((XMLGregorianCalendar) super.decodeLiteral((Literal) value));
}
}
}
return times;
}
/**
* @return string containing human readable statements.
* @throws RepositoryException
*/
protected String dumpHumanReadableTriples() throws RepositoryException {
StringBuilder sb = new StringBuilder();
RepositoryResult<Statement> result = conn.getStatements(null, null, null, false);
while (result.hasNext()) {
Statement statement = result.next();
sb.append(
String.format(
"%s %s %s %s\n",
statement.getSubject(),
statement.getPredicate(),
statement.getObject(),
statement.getContext()));
}
return sb.toString();
}
public Collection<String> getAllTriples() {
Set<String> all = new HashSet<>();
try {
RepositoryConnection repoConn = this.repository.getConnection();
RepositoryResult<Statement> results = repoConn.getStatements(null, null, null, false);
while (results.hasNext()) {
Statement tempResult = results.next();
all.add(tempResult.toString());
}
repoConn.close();
} catch (RepositoryException ex) {
ex.printStackTrace();
}
return all;
}
@Override
public List<URI> collectVertices(final String type) throws RepositoryException {
final URI typeURI = vf.createURI(BASE_PREFIX + type);
final List<URI> vertices = new ArrayList<>();
final RepositoryResult<Statement> statements =
connection.getStatements(null, RDF.TYPE, typeURI, true);
while (statements.hasNext()) {
final Statement s = statements.next();
final URI uri = (URI) s.getSubject();
vertices.add(uri);
}
return vertices;
}
@Override
public void handleStatement(Statement st) throws RDFHandlerException {
if (!this.samplesData.containsKey(st.getSubject())) {
this.samplesData.put(st.getSubject(), new HashMap<URI, HashSet<Value>>());
}
if (!this.samplesData.get(st.getSubject()).containsKey(st.getPredicate())) {
this.samplesData.get(st.getSubject()).put(st.getPredicate(), new HashSet<Value>());
}
this.samplesData.get(st.getSubject()).get(st.getPredicate()).add(st.getObject());
}
@Test
public void testStatementSerialization() throws Exception {
Statement st = vf.createStatement(picasso, RDF.TYPE, painter);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(baos);
out.writeObject(st);
out.close();
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
ObjectInputStream in = new ObjectInputStream(bais);
Statement deserializedStatement = (Statement) in.readObject();
in.close();
assertTrue(st.equals(deserializedStatement));
}
