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package oppronto;import java.io.ByteArrayOutputStream;import java.net.MalformedURLException;import java.net.URL;import java.util.*;import com.hp.hpl.jena.ontology.*;import com.hp.hpl.jena.query.*;import com.hp.hpl.jena.query.ResultSet;import com.hp.hpl.jena.rdf.model.*;import com.hp.hpl.jena.reasoner.*;import com.hp.hpl.jena.shared.NotFoundException;import com.hp.hpl.jena.util.*;import com.hp.hpl.jena.vocabulary.*;// add identityPredicate, and OnlineResource 'contains' (plus inverse), and Agent 'has' (+inv) relations...// OnlineIdentity cannot hold more than one identitypublic class OpprontoModel {	public static final String NS = "http://cies.breijs.com/ns/oppronto/0.1/oppronto#";	private List<URL> nextUrls = new ArrayList<URL>();	private HashSet<URL> visitedUrls = new HashSet<URL>();	private HashMap<Resource, Resource> resourceIdentityPredicates = new HashMap<Resource, Resource>();	private InfModel infmodel;	public OpprontoModel(String ontologyUrl, String projectUrl) {		ModelFactory.createOntologyModel(OntModelSpec.OWL_DL_MEM, null);		Model schema = FileManager.get().loadModel(ontologyUrl);		Model data = FileManager.get().loadModel(projectUrl);		Reasoner  reasoner = ReasonerRegistry.getOWLMicroReasoner();		reasoner = reasoner.bindSchema(schema);		infmodel = ModelFactory.createInfModel(reasoner, data);		checkValidity();		System.out.println("\nrdfs:seeAlsos:");		seeAlsos();		ListIterator<URL> iter = nextUrls.listIterator();		while (iter.hasNext()) {			URL url = iter.next();			visitedUrls.add(url);			try {				data.add(FileManager.get().loadModel(url.toString()));				System.out.println("Loaded: " + url);			} catch (NotFoundException e) {				System.out.println("Could not find: " + url);			}		}		infmodel = ModelFactory.createInfModel(reasoner, data);		checkValidity();		seeAlsos();		findIdentityPredicates();		connectOnlineIdentitiesWithOnlineResources();	}	public InfModel fullModel() {		return infmodel;	}		public String query(String q) {		Query query = QueryFactory.create(q);		QueryExecution qe = QueryExecutionFactory.create(query, infmodel);		ResultSet results = qe.execSelect();		ByteArrayOutputStream out = new ByteArrayOutputStream();		ResultSetFormatter.out(out, results, query);		qe.close();		return out.toString();	}		private boolean checkValidity() {		ValidityReport validity = infmodel.validate();		if (validity.isValid()) {			System.out.println("OK");			return true;		}		System.out.println("Conflicts");		for (Iterator i = validity.getReports(); i.hasNext();) {			ValidityReport.Report report = (ValidityReport.Report) i.next();			System.out.println(" - " + report);		}		return false;	}	private boolean checkStrictValidity() {		// how to check for the use of undefined tags (like: <codeName>)		// how to check for requirements (with cardinality? or with relax NG)		// how to check for proper includes and legal URI's over more than one		// file		return false;	}	private void seeAlsos() {		NodeIterator iter = infmodel.listObjectsOfProperty(RDFS.seeAlso);		while (iter.hasNext()) {			String url = iter.next().toString();			System.out.println(" - " + url);  // it can be a literal or a resource			try {				addURL(new URL(url));			} catch (MalformedURLException e) {				System.out.println("Found malformed URL: " + url);			}		}	}	private void connectOnlineIdentitiesWithOnlineResources() {		Property did = infmodel.getProperty(NS, "did");  // use much later but set here _once_		ArrayList<Resource[]> relations = userResourcePartRelations();		for (int i = 0; i < relations.size(); i++) {			System.out.println(" === " + relations.get(i)[0].toString() + " " + did.toString() + " " + relations.get(i)[1].toString());			infmodel.add(relations.get(i)[0], did, (RDFNode)relations.get(i)[1]);		}	}			private ArrayList<Resource[]> userResourcePartRelations() {		ArrayList<Resource[]> result = new ArrayList<Resource[]>();		Property holdsOnlineIdentityPredicate = infmodel.getProperty(NS, "holdsOnlineIdentity");		StmtIterator iter = infmodel.listStatements(null, holdsOnlineIdentityPredicate, (RDFNode)null);		//listObjectsOfProperty(identityPredicate);		while (iter.hasNext()) {			Statement stmt = iter.nextStatement();			System.out.println(" - " + PrintUtil.print(stmt));			Property identityPredicate = infmodel.getProperty(NS, "identity");			StmtIterator _iter = infmodel.listStatements((Resource)stmt.getObject(), identityPredicate, (RDFNode)null);			String agentIdentifier = null;			while (_iter.hasNext()) {				Statement _stmt = _iter.nextStatement();				agentIdentifier = _stmt.getString();				System.out.println(" --+ " + agentIdentifier);			}						if (agentIdentifier != null) {				Property onOnlineResourcePredicate = infmodel.getProperty(NS, "onOnlineResource");				_iter = infmodel.listStatements((Resource)stmt.getObject(), onOnlineResourcePredicate, (RDFNode)null);				while (_iter.hasNext()) {					Statement _stmt = _iter.nextStatement();										Resource onlineResource = (Resource)_stmt.getObject();					Resource identifyingPropertyResource = resourceIdentityPredicates.get(onlineResource);					System.out.println(" --> " + onlineResource.toString());					if (identifyingPropertyResource != null) {						Property identifyingProperty = infmodel.getProperty(identifyingPropertyResource.getURI());						StmtIterator __iter = infmodel.listStatements(null, identifyingProperty, (RDFNode)null);						while (__iter.hasNext()) {							Statement __stmt = __iter.nextStatement();							System.out.println(" >>> " + PrintUtil.print(__iter));							if (__stmt.getObject().toString().equals(agentIdentifier)) {								Resource[] resourceList = new Resource[2];								resourceList[0] = stmt.getSubject();								resourceList[1] = __stmt.getSubject();								result.add(resourceList);							}						}					}				}			}		}		return result;	}		// some method that adds relations between all the statements in the seeAlso-linked	// resources to the OnlineResource they belong to would be nice.	private void findIdentityPredicates() {		Property identityPredicate = infmodel.getProperty(NS, "identityPredicate");		StmtIterator iter = infmodel.listStatements(null, identityPredicate, (RDFNode)null);		//listObjectsOfProperty(identityPredicate);		while (iter.hasNext()) {			Statement stmt = iter.nextStatement();			System.out.println(" - " + PrintUtil.print(stmt));			resourceIdentityPredicates.put(stmt.getSubject(), (Resource)stmt.getObject());		}	}	private void addURL(URL url) {		if (!visitedUrls.contains(url)) {			nextUrls.add(url);			visitedUrls.add(url);		} else {			System.out.println("Already seen: " + url);		}	}}