Java Code Examples for com.hp.hpl.jena.rdf.model.StmtIterator#nextStatement()

@Override
protected int countProperties(Resource r, Property p) 
{
	int numProp = 0 ;
	StmtIterator sIter = r.listProperties(p) ;
	for ( ; sIter.hasNext() ; )
	{
		Statement stmnt=sIter.nextStatement() ;
		if(! stmnt.getObject().toString().startsWith("null"))
		{
			numProp++ ;
		}
	}
	sIter.close() ;
	return numProp ;
}
 

public Collection<Resource> getUndefinedResources(Model model) {
	Set<Resource> result = new HashSet<Resource>();
	StmtIterator it = model.listStatements();
	while (it.hasNext()) {
		Statement stmt = it.nextStatement();
		if (stmt.getSubject().isURIResource()
				&& stmt.getSubject().getURI().startsWith(namespace)
				&& !resources.contains(stmt.getSubject())) {
			result.add(stmt.getSubject());
		}
		if (stmt.getPredicate().equals(RDF.type)) continue;
		if (stmt.getObject().isURIResource()
				&& stmt.getResource().getURI().startsWith(namespace)
				&& !resources.contains(stmt.getResource())) {
			result.add(stmt.getResource());
		}
	}
	return result;
}
 

public void RDF2TopicMap(Model model, TopicMap map) {
    // list the statements in the Model
    StmtIterator iter = model.listStatements();
    Statement stmt = null;
    int counter = 0;

    while (iter.hasNext() && !forceStop()) {
        try {
            stmt = iter.nextStatement();  // get next statement
            handleStatement(stmt, map);
        }
        catch(Exception e) {
            log(e);
        }
        counter++;
        setProgress(counter);
        if(counter % 100 == 0) hlog("RDF statements processed: " + counter);

    }
    log("Total RDF statements processed: " + counter);
}
 

static public ArrayList<String> getAllEntityEvents (Dataset dataset, String entity) {
    ArrayList<String> events = new ArrayList<String>();
    Iterator<String> it = dataset.listNames();
    while (it.hasNext()) {
        String name = it.next();
        if (!name.equals(instanceGraph) && (!name.equals(provenanceGraph))) {
            Model namedModel = dataset.getNamedModel(name);
            StmtIterator siter = namedModel.listStatements();
            while (siter.hasNext()) {
                Statement s = siter.nextStatement();
                String object = getObjectValue(s).toLowerCase();
                if (object.indexOf(entity.toLowerCase()) > -1) {
                    String subject = s.getSubject().getURI();
                    if (!events.contains(subject)) {
                        events.add(subject);
                    }
                }
            }
        }
    }
    return events;
}
 

/**
 * Retrieve the dhus system supported items for file scanning processing.
 * Is considered supported all classes having
 * <code>http://www.gael.fr/dhus#metadataExtractor</code> property
 * connection.
 * @return the list of supported class names.
 */
public static synchronized String[] getDefaultCortexSupport ()
{
   DrbCortexModel model;
   try
   {
      model = DrbCortexModel.getDefaultModel ();
   }
   catch (IOException e)
   {
      throw new UnsupportedOperationException (
         "Drb cortex not properly initialized.");
   }

   ExtendedIterator it=model.getCortexModel ().getOntModel ().listClasses ();
   List<String>list = new ArrayList<String> ();

   while (it.hasNext ())
   {
      OntClass cl = (OntClass)it.next ();

      OntProperty metadata_extractor_p = cl.getOntModel().getOntProperty(
            "http://www.gael.fr/dhus#support");

      StmtIterator properties = cl.listProperties (metadata_extractor_p);
      while (properties.hasNext ())
      {
         Statement stmt = properties.nextStatement ();
         LOGGER.debug ("Scanner Support Added for " +
            stmt.getSubject ().toString ());
         list.add (stmt.getSubject ().toString ());
      }
   }
   return list.toArray (new String[list.size ()]);
}
 

protected void writeRDFStatements(Model model, Resource subject,
		PrintWriter writer) {
	StmtIterator sIter = model
			.listStatements(subject, null, (RDFNode) null);
	writeDescriptionHeader(subject, writer);
	while (sIter.hasNext()) {
		Statement nextSt = sIter.nextStatement();
		if (nextSt.getObject().toString().startsWith("null^^")) {
			sIter.nextStatement();
			continue;
		}
		writePredicate(nextSt, writer);
	}
	writeDescriptionTrailer(subject, writer);
}
 

public Collection<Resource> getUndefinedClasses(Model model) {
	Set<Resource> result = new HashSet<Resource>();
	StmtIterator it = model.listStatements(null, RDF.type, (RDFNode) null);
	while (it.hasNext()) {
		Statement stmt = it.nextStatement();
		if (stmt.getObject().isURIResource()
				&& stmt.getResource().getURI().startsWith(namespace)
				&& !classes.contains(stmt.getObject())) {
			result.add(stmt.getResource());
		}
	}
	return result;
}
 

public Collection<Property> getUndefinedProperties(Model model) {
	Set<Property> result = new HashSet<Property>();
	StmtIterator it = model.listStatements();
	while (it.hasNext()) {
		Statement stmt = it.nextStatement();
		if (stmt.getPredicate().getURI().startsWith(namespace)
				&& !properties.contains(stmt.getPredicate())) {
			result.add(stmt.getPredicate());
		}
	}
	return result;
}
 

public boolean usesVocabulary(Model model) {
	StmtIterator it = model.listStatements();
	while (it.hasNext()) {
		Statement stmt = it.nextStatement();
		if (stmt.getPredicate().getURI().startsWith(namespace)) {
			return true;
		}
		if (stmt.getPredicate().equals(RDF.type) && stmt.getResource().getURI().startsWith(namespace)) {
			return true;
		}
	}
	return false;
}
 

private void parsePropertyBridges() {
	StmtIterator stmts = this.model.listStatements(null, D2RQ.belongsToClassMap, (RDFNode) null);
	while (stmts.hasNext()) {
		Statement stmt = stmts.nextStatement();
		ClassMap classMap = this.mapping.classMap(stmt.getResource());
		Resource r = stmt.getSubject();
		PropertyBridge bridge = new PropertyBridge(r);
		bridge.setBelongsToClassMap(classMap);
		parseResourceMap(bridge, r);
		parsePropertyBridge(bridge, r);
	}
}
 

static public void main (String[] args) {
    Dataset dataset  = null;
    String address = "http://145.100.57.176:50053/";
    ArrayList<org.openrdf.model.Statement> statements = new ArrayList<org.openrdf.model.Statement>();
            Iterator<String> it = dataset.listNames();
            while (it.hasNext()) {
                String name = it.next();

                Model namedModel = dataset.getNamedModel(name);
                StmtIterator siter = namedModel.listStatements();
                while (siter.hasNext()) {
                    com.hp.hpl.jena.rdf.model.Statement s = siter.nextStatement();
                    org.openrdf.model.Statement statement =castJenaOpenRdf(s, name);
                    if (statement!=null) {
                        statements.add(statement);
                    }
                }
            }
            if (DEBUG) {
                try {
                    ByteArrayOutputStream os = new ByteArrayOutputStream();
                    RDFDataMgr.write(os, dataset, RDFFormat.TRIG_PRETTY);
                    String rdfString = new String(os.toByteArray(), "UTF-8");
                    System.out.println("rdfString = " + rdfString);
                    os.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
           // System.out.println("address = " + address);
    WriteStatementsKnowledgeStore.storeTriples(statements, address);
}
 

static ArrayList<String> getAllEsoEvents (Dataset dataset, ArrayList<String> esoTypes) {
    ArrayList<String> events = new ArrayList<String>();
    Iterator<String> it = dataset.listNames();
    while (it.hasNext()) {
        String name = it.next();
        if (name.equals(instanceGraph)) {
            Model namedModel = dataset.getNamedModel(name);
            StmtIterator siter = namedModel.listStatements();
            while (siter.hasNext()) {
                Statement s = siter.nextStatement();
                //  System.out.println("s.toString() = " + s.toString());
                if (s.getPredicate().toString().endsWith("#type")) {
                    for (int i = 0; i < esoTypes.size(); i++) {
                        String esoType = esoTypes.get(i);
                        if (s.getObject().toString().endsWith(esoType)) {
                            String subject = s.getSubject().getURI();
                            if (!events.contains(subject)) {
                                events.add(subject);
                            }
                            break;
                        }
                    }
                }
            }
        }
    }
    return events;
}
 

static public void main (String[] args) {

        String trigfolderPath = "";
        trigfolderPath = "/Users/piek/Desktop/tweede-kamer/events";
        String entity = "";
        String date = "";
        entity = "lippens";
        for (int i = 0; i < args.length; i++) {
            String arg = args[i];
            if (arg.equals("--trig-folder") && args.length>(i+1)) {
                trigfolderPath = args[i+1];
            }
            else if (arg.equals("--entity") && args.length>(i+1)) {
                entity = args[i+1];
            }
            else if (arg.equals("--event-date") && args.length>(i+1)) {
                date = args[i+1];
            }
        }
        if (entity.isEmpty()) {
            System.out.println("Entity is empty");
            return;
        }
        File trigfolder = new File(trigfolderPath);
        String trigEntityPath = trigfolder.getParent()+"/"+entity;
        File entityTrigFolder = new File (trigEntityPath);
        if (!entityTrigFolder.exists()) {
            entityTrigFolder.mkdir();
        }
        if (!entityTrigFolder.exists()) {
            System.out.println("Could not create entity trig folder");
            return;
        }
        dataset = TDBFactory.createDataset();
        ArrayList<File> trigFiles = Util.makeRecursiveFileList(trigfolder, ".trig");
        System.out.println(trigfolder.getName() + " trigFiles.size() = " + trigFiles.size());
        int cnt = 1;
        for (int i = 0; i < trigFiles.size(); i++) {
            File file = trigFiles.get(i);
            if (!file.getParentFile().getName().startsWith(date)) {
                continue;
            }
            if (i%500==0) {
                System.out.println("i = " + i);
               // if (i>1000) break;
            }
            ArrayList<String> events = new ArrayList<String>();
            dataset = RDFDataMgr.loadDataset(file.getAbsolutePath());
            Model namedModel = dataset.getNamedModel(TrigUtil.instanceGraph);
            StmtIterator siter = namedModel.listStatements();
            while (siter.hasNext()) {
                Statement s = siter.nextStatement();
                String subject = s.getSubject().getURI().toLowerCase();
                if (subject.indexOf(entity.toLowerCase())>-1) {
                    String trigName = trigEntityPath+"/"+cnt+"_"+file.getName();
                    File trigCopy = new File(trigName);
                    copyFile(file, trigCopy);
                    cnt++;
                    break;
                }
            }
            dataset = null;
        }
    }