stevenh@37: package org.qmul.eecs.c4dm.sia.midi;
stevenh@37: 
stevenh@37: import java.io.File;
stevenh@37: import java.io.FileNotFoundException;
stevenh@37: import java.io.FileOutputStream;
stevenh@37: import java.io.IOException;
stevenh@37: import java.util.ArrayList;
stevenh@37: import java.util.Collection;
stevenh@37: import java.util.HashMap;
stevenh@37: import java.util.Iterator;
stevenh@37: import java.util.List;
stevenh@37: import java.util.Vector;
stevenh@37: 
stevenh@37: import javax.sound.midi.InvalidMidiDataException;
stevenh@37: import javax.sound.midi.MetaMessage;
stevenh@37: import javax.sound.midi.MidiEvent;
stevenh@37: import javax.sound.midi.MidiMessage;
stevenh@37: import javax.sound.midi.MidiSystem;
stevenh@37: import javax.sound.midi.Sequence;
stevenh@37: import javax.sound.midi.ShortMessage;
stevenh@37: import javax.sound.midi.SysexMessage;
stevenh@37: import javax.sound.midi.Track;
stevenh@37: 
stevenh@37: import org.qmul.eecs.c4dm.sia.model.Datapoint;
stevenh@37: import org.qmul.eecs.c4dm.sia.model.DimensionValue;
stevenh@37: import org.qmul.eecs.c4dm.sia.rdf.Namespaces;
stevenh@37: 
stevenh@37: import com.hp.hpl.jena.ontology.OntClass;
stevenh@37: import com.hp.hpl.jena.ontology.OntModel;
stevenh@37: import com.hp.hpl.jena.ontology.OntResource;
stevenh@37: import com.hp.hpl.jena.rdf.model.AnonId;
stevenh@37: import com.hp.hpl.jena.rdf.model.ModelFactory;
stevenh@37: import com.hp.hpl.jena.rdf.model.NodeIterator;
stevenh@37: import com.hp.hpl.jena.rdf.model.Property;
stevenh@37: import com.hp.hpl.jena.rdf.model.RDFNode;
stevenh@37: import com.hp.hpl.jena.rdf.model.Resource;
stevenh@37: import com.hp.hpl.jena.rdf.model.Statement;
stevenh@37: import com.hp.hpl.jena.rdf.model.StmtIterator;
stevenh@37: import com.hp.hpl.jena.util.iterator.ExtendedIterator;
stevenh@37: import com.hp.hpl.jena.vocabulary.RDF;
stevenh@37: import com.sun.media.sound.MidiUtils;
stevenh@37: 
stevenh@37: public class MidiParser {
stevenh@37: 	
stevenh@37: 	public static final int TIME_DIMENSION = 1;
stevenh@37: 	public static final int PITCH_DIMENSION = 2;
stevenh@37: 	public static final int CHANNEL_DIMENSION = 3;
stevenh@37: 
stevenh@37: 	// The ontology loaded as dataset
stevenh@37: 	private static final String ontology = "file:src/rdf/siaDatapointOntology.n3";
stevenh@37: 
stevenh@37: 	// The final output file
stevenh@37: 	private static final String finalModelFileName = "src/rdf/midiModel";
stevenh@37: 
stevenh@37: 	public static void main(String[] args)
stevenh@37: 	{
stevenh@37: 		// First create a Jena ontology model
stevenh@37: 		OntModel ontModel = ModelFactory
stevenh@37: 				.createOntologyModel(); // OntModelSpec.OWL_MEM
stevenh@37: 
stevenh@37: 		// Then read the data from the file into the ontology model
stevenh@37: 		ontModel.read(ontology, "N3");
stevenh@37: 		
stevenh@37: 		// Set the value of SIA_NS_URI as the namespace for 'sia' found in
stevenh@37: 		// the ontology. This must be done before we use any of the sia.model classes.
stevenh@37: 		Namespaces.SIA_NS_URI = ontModel.getNsPrefixURI("sia");
stevenh@37: 		OntClass datapointClass = ontModel.getOntClass(Datapoint.RESOURCE_URI);
stevenh@37: 		Resource datapointResource = ontModel.getOntResource(datapointClass);
stevenh@37: 		Property siaDimValProperty = ontModel.createProperty(DimensionValue.PROPERTY_URI);
stevenh@37: 		Property siaDimensionProperty = ontModel.createProperty(DimensionValue.DIMENSION_URI);
stevenh@37: 		Property siaValueProperty = ontModel.createProperty(DimensionValue.VALUE_URI);
stevenh@37: 
stevenh@37: 		String midiFileName = "/Volumes/USB DISK/portable/ewerts/Cantata_16_no_5-mids/score.mid";
stevenh@37: 
stevenh@37: 		File midiFile1 = new File(midiFileName);
stevenh@37: 	
stevenh@37: 		Sequence sequence = null;
stevenh@37: 		try {
stevenh@37: 			sequence = MidiSystem.getSequence(midiFile1);
stevenh@37: 		} catch (InvalidMidiDataException e) {
stevenh@37: 			e.printStackTrace();
stevenh@37: 			System.exit(1);
stevenh@37: 		} catch (IOException e) {
stevenh@37: 			e.printStackTrace();
stevenh@37: 			System.exit(1);
stevenh@37: 		}
stevenh@37: 		
stevenh@37: 		MidiUtils.TempoCache tempoCache = new MidiUtils.TempoCache(sequence);
stevenh@37: 
stevenh@37: 		Track[] tracks = sequence.getTracks();
stevenh@37: 		int numTracks = tracks.length;
stevenh@37: 		float divisionType = sequence.getDivisionType();
stevenh@37: 	    List<Datapoint> datapoints = new ArrayList<Datapoint>();
stevenh@37: 		
stevenh@37: 		HashMap<Integer, Integer> trackDimensionMap = getTrackToDimensionIndexMap(sequence);
stevenh@37: 		
stevenh@37: 		if (trackDimensionMap.isEmpty())
stevenh@37: 		{
stevenh@37: 			try {
stevenh@37: 				throw new Exception("Couldn't find any track to dimension mappings");
stevenh@37: 			} catch (Exception e) {
stevenh@37: 				e.printStackTrace();
stevenh@37: 				System.exit(1);
stevenh@37: 			}
stevenh@37: 		}
stevenh@37: 		
stevenh@37: 		long maxTick = 0;
stevenh@37: 				
stevenh@37: 		for (int trackIdx = 0; trackIdx < numTracks; trackIdx++)
stevenh@37: 		{
stevenh@37: 			System.out.println("Track " + trackIdx + ":");
stevenh@37: 			int numEvents = tracks[trackIdx].size();
stevenh@37: 			for (int eventIdx = 0; eventIdx < numEvents; eventIdx++)
stevenh@37: 			{
stevenh@37: 				MidiEvent event = tracks[trackIdx].get(eventIdx);
stevenh@37: 				long tick = event.getTick();
stevenh@37: 				MidiMessage midiMessage = event.getMessage();
stevenh@37: 				
stevenh@37: 				int midiMessageLength = midiMessage.getLength();
stevenh@37: 				byte[] messageBytes = midiMessage.getMessage();
stevenh@37: 				int status = midiMessage.getStatus();
stevenh@37: 				System.out.println("tick = " + tick + " midiMessageLength = " + midiMessageLength + " status byte = " + status);
stevenh@37: 
stevenh@37: 				int s = status & 0x80;
stevenh@37: 				if (s == 0x80)
stevenh@37: 				{
stevenh@37: 					System.out.println("STATUS MESSAGE (s = " + s + ")");
stevenh@37: 				}
stevenh@37: 				else
stevenh@37: 				{
stevenh@37: 					System.out.println("not a status message (s = " + s + ")");
stevenh@37: 				}
stevenh@37: 					
stevenh@37: 				// Determine the type of this message (short, sysex or meta)
stevenh@37: 				if (midiMessage instanceof ShortMessage)
stevenh@37: 				{
stevenh@37: 					System.out.print("ShortMessage ");
stevenh@37: 										
stevenh@37: 					// Determine which command is being issued
stevenh@37: 					ShortMessage shortMessage = (ShortMessage)midiMessage;
stevenh@37: 					int messageCommand = shortMessage.getCommand();
stevenh@37: 					int channel = shortMessage.getChannel();
stevenh@37: 					int data1 = shortMessage.getData1();
stevenh@37: 					int data2 = shortMessage.getData2();
stevenh@37: 
stevenh@37: 					if (messageCommand == ShortMessage.ACTIVE_SENSING)
stevenh@37: 					{
stevenh@37: 						System.out.print("ignoring ACTIVE_SENSING");
stevenh@37: 					}
stevenh@37: 					else if (messageCommand == ShortMessage.CHANNEL_PRESSURE)
stevenh@37: 					{
stevenh@37: 						System.out.print("ignoring CHANNEL_PRESSURE");
stevenh@37: 					}
stevenh@37: 					else if (messageCommand == ShortMessage.CONTINUE)
stevenh@37: 					{
stevenh@37: 						System.out.print("ignoring CONTINUE");
stevenh@37: 					}
stevenh@37: 					else if (messageCommand == ShortMessage.CONTROL_CHANGE)
stevenh@37: 					{
stevenh@37: 						System.out.print("ignoring CONTROL_CHANGE");
stevenh@37: 					}
stevenh@37: 					else if (messageCommand == ShortMessage.END_OF_EXCLUSIVE)
stevenh@37: 					{
stevenh@37: 						System.out.print("ignoring END_OF_EXCLUSIVE");
stevenh@37: 					}
stevenh@37: 					else if (messageCommand == ShortMessage.MIDI_TIME_CODE)
stevenh@37: 					{
stevenh@37: 						System.out.print("ignoring MIDI_TIME_CODE");
stevenh@37: 					}
stevenh@37: 					else if (messageCommand == ShortMessage.NOTE_OFF)
stevenh@37: 					{
stevenh@37: 						System.out.println("NOTE_OFF");
stevenh@37: 						long microsecs = MidiUtils.tick2microsecond(sequence, tick, tempoCache);
stevenh@37: 						System.out.println(" microsecs = " + microsecs);
stevenh@37: 					}
stevenh@37: 					else if (messageCommand == ShortMessage.NOTE_ON)
stevenh@37: 					{
stevenh@37: 						if (tick > maxTick)
stevenh@37: 						{
stevenh@37: 							maxTick = tick;
stevenh@37: 						}
stevenh@37: 						System.out.println("NOTE_ON");
stevenh@37: 						long microsecs = MidiUtils.tick2microsecond(sequence, tick, tempoCache);
stevenh@37: 						System.out.println(" microsecs = " + microsecs);
stevenh@37: 						
stevenh@37: 						DimensionValue timeDimVal = new DimensionValue();
stevenh@37: 						timeDimVal.setDimension(TIME_DIMENSION);
stevenh@37: 						timeDimVal.setValue(tick);
stevenh@37: 						
stevenh@37: 						DimensionValue dimVal = new DimensionValue();
stevenh@37: 						dimVal.setDimension(trackDimensionMap.get(trackIdx));
stevenh@37: 						dimVal.setValue(data1);
stevenh@37: 						
stevenh@37: 						Datapoint datapoint = new Datapoint();
stevenh@37: 						Vector<DimensionValue> dimVals = new Vector<DimensionValue>();
stevenh@37: 						dimVals.add(timeDimVal);
stevenh@37: 						dimVals.add(dimVal);
stevenh@37: 						
stevenh@37: 						datapoint.setDimensionValues(dimVals);
stevenh@37: 						datapoints.add(datapoint);
stevenh@37: 						
stevenh@37: 						// RDF
stevenh@37: 						Resource datapointBnode = ontModel.createResource(AnonId.create());
stevenh@37: 						ontModel.add(datapointBnode, RDF.type, datapointResource);
stevenh@37: 
stevenh@37: 						Resource timeDimValBnode = ontModel.createResource(AnonId.create());
stevenh@37: 						Resource pitchDimValBnode = ontModel.createResource(AnonId.create());
stevenh@37: 
stevenh@37: 						ontModel.add(datapointBnode, siaDimValProperty, timeDimValBnode);
stevenh@37: 						ontModel.addLiteral(timeDimValBnode, siaDimensionProperty, TIME_DIMENSION);
stevenh@37: 						ontModel.addLiteral(timeDimValBnode, siaValueProperty, tick);
stevenh@37: 
stevenh@37: 						ontModel.add(datapointBnode, siaDimValProperty, pitchDimValBnode);
stevenh@37: 						ontModel.addLiteral(pitchDimValBnode, siaDimensionProperty, trackDimensionMap.get(trackIdx).intValue());
stevenh@37: 						ontModel.addLiteral(pitchDimValBnode, siaValueProperty, data1);
stevenh@37: 					}
stevenh@37: 					else if (messageCommand == ShortMessage.PITCH_BEND)
stevenh@37: 					{
stevenh@37: 						System.out.print("ignoring PITCH_BEND");
stevenh@37: 					}
stevenh@37: 					else if (messageCommand == ShortMessage.POLY_PRESSURE)
stevenh@37: 					{
stevenh@37: 						System.out.print("ignoring POLY_PRESSURE");
stevenh@37: 					}
stevenh@37: 					else if (messageCommand == ShortMessage.PROGRAM_CHANGE)
stevenh@37: 					{
stevenh@37: 						System.out.print("ignoring PROGRAM_CHANGE");
stevenh@37: 					}
stevenh@37: 					else if (messageCommand == ShortMessage.SONG_POSITION_POINTER)
stevenh@37: 					{
stevenh@37: 						System.out.print("ignoring SONG_POSITION_POINTER");
stevenh@37: 					}
stevenh@37: 					else
stevenh@37: 					{
stevenh@37: 						System.out.print("unrecognised midi message command (" + messageCommand + ")");
stevenh@37: 					}
stevenh@37: 					System.out.print(", channel " + channel + ", data1 = [" + data1 + "], data2 = [" + data2 + "]");
stevenh@37: 					System.out.println();
stevenh@37: 				}
stevenh@37: 				else if (midiMessage instanceof MetaMessage)
stevenh@37: 				{
stevenh@37: 					System.out.println("MetaMessage");
stevenh@37: 					
stevenh@37: 					MetaMessage metaMessage = (MetaMessage)midiMessage;
stevenh@37: 					byte[] metaMessageData = metaMessage.getData();
stevenh@37: 					int metaMessageLength = metaMessage.getLength();
stevenh@37: 					int metaMessageType = metaMessage.getType();
stevenh@37: 					System.out.println("metaMessageType = " + metaMessageType + ", metaMessageLength = " + metaMessageLength);
stevenh@37: 					
stevenh@37: 					// Determine message type
stevenh@37: 					if (metaMessageType == 81)
stevenh@37: 					{
stevenh@37: 						if (divisionType == Sequence.PPQ)
stevenh@37: 						{
stevenh@37: 							// Do nothing - we've dealt with PPQ tempo data elsewhere
stevenh@37: 						}
stevenh@37: 						else
stevenh@37: 						{
stevenh@37: 							try {
stevenh@37: 								throw new Exception("Not yet implemented SMPTE tempo metadata");
stevenh@37: 							} catch (Exception e) {
stevenh@37: 								e.printStackTrace();
stevenh@37: 								System.exit(1);
stevenh@37: 							}
stevenh@37: 						}
stevenh@37: 					}
stevenh@37: 
stevenh@37: 					for (int dataIdx = 0; dataIdx < metaMessageData.length; dataIdx++)
stevenh@37: 					{
stevenh@37: 						System.out.println("\tmetaMessageData[" + dataIdx + "] = " + (metaMessageType == 81 ? metaMessageData[dataIdx] : (char)metaMessageData[dataIdx]));
stevenh@37: 					}
stevenh@37: 
stevenh@37: 				}
stevenh@37: 				else if (midiMessage instanceof SysexMessage)
stevenh@37: 				{
stevenh@37: 					// We can safely ignore these messages
stevenh@37: 					System.out.println("ignoring SysexMessage");
stevenh@37: 				}
stevenh@37: 				else
stevenh@37: 				{
stevenh@37: 					System.out.println("Unknown MidiMessage type (" + midiMessage.getClass().toString() + ")");
stevenh@37: 				}
stevenh@37: 				
stevenh@37: 				for (int byteIdx = 0; byteIdx < midiMessageLength; byteIdx++)
stevenh@37: 				{
stevenh@37: 					byte messageByte = messageBytes[byteIdx];
stevenh@37: 					System.out.println("\tbyte[" + byteIdx + "] = " + messageByte);
stevenh@37: 				}
stevenh@37: 			}
stevenh@37: 		}
stevenh@37: 
stevenh@37: 		// Data integrity start - set any 'missing' dimensions to zero value
stevenh@37: 		// Note the highest dimension for later use
stevenh@37: 		Collection<Integer> values = trackDimensionMap.values();
stevenh@37: 		Iterator<Integer> valuesIter = values.iterator();
stevenh@37: 		int maxDimension = 0;
stevenh@37: 		while (valuesIter.hasNext())
stevenh@37: 		{
stevenh@37: 			Integer value = valuesIter.next();
stevenh@37: 			if (value > maxDimension)
stevenh@37: 			{
stevenh@37: 				maxDimension = value;
stevenh@37: 			}
stevenh@37: 		}
stevenh@37: 
stevenh@37: 		// Iterate over all datapoints
stevenh@37: 		ExtendedIterator<? extends OntResource> datapointIter = datapointClass.listInstances();
stevenh@37: 		OntResource datapointIndividual;
stevenh@37: 		OntModel ontModelTemp = ModelFactory
stevenh@37: 				.createOntologyModel(); // OntModelSpec.OWL_MEM
stevenh@37: 
stevenh@37: 		while (datapointIter.hasNext())
stevenh@37: 		{
stevenh@37: 			datapointIndividual = datapointIter.next();
stevenh@37: 		
stevenh@37: 			// Find all Dimension Values for this datapoint
stevenh@37: 			NodeIterator dimValIter = datapointIndividual.listPropertyValues(siaDimValProperty);
stevenh@37: 			
stevenh@37: 			// Create a hashmap of dimensions for this datapoint
stevenh@37: 			HashMap<Integer, Boolean> dimensions = new HashMap<>();
stevenh@37: 			while (dimValIter.hasNext())
stevenh@37: 			{
stevenh@37: 				RDFNode dimVal = dimValIter.next();
stevenh@37: 				NodeIterator dims = ontModel.listObjectsOfProperty(dimVal.asResource(), siaDimensionProperty);
stevenh@37: 				while (dims.hasNext())
stevenh@37: 				{
stevenh@37: 					int dim = dims.next().asLiteral().getInt();
stevenh@37: 					dimensions.put(dim, true);
stevenh@37: 					System.out.println(dim);
stevenh@37: 				}
stevenh@37: 			}
stevenh@37: 			
stevenh@37: 			for (int i = 2; i <= maxDimension; i++)
stevenh@37: 			{
stevenh@37: 				if (!dimensions.containsKey(i))
stevenh@37: 				{
stevenh@37: 					Resource zeroValDimValBnode = ontModel.createResource(AnonId.create());
stevenh@37: 
stevenh@37: 					Resource dpResource = datapointIndividual.asResource();
stevenh@37: 					ontModelTemp.add(dpResource, siaDimValProperty, zeroValDimValBnode);
stevenh@37: 					ontModelTemp.addLiteral(zeroValDimValBnode, siaDimensionProperty, i);
stevenh@37: 					ontModelTemp.addLiteral(zeroValDimValBnode, siaValueProperty, 0);					
stevenh@37: 				}
stevenh@37: 			}
stevenh@37: 			
stevenh@37: 		}
stevenh@37: 		ontModel.add(ontModelTemp);
stevenh@37: 		// Data integrity end
stevenh@37: 
stevenh@37: 		System.out.println("done");
stevenh@37: 	    	    
stevenh@37: 		// Print out what we've got now
stevenh@37: 		System.out.println("------------------");
stevenh@37: 		StmtIterator stmtIterator = ontModel.listStatements();
stevenh@37: 		printStmts(stmtIterator);
stevenh@37: 
stevenh@37: 		// Write rdf to file
stevenh@37: 		File outFileRdf = new File(finalModelFileName + ".rdf");
stevenh@37: 		File outFileN3 = new File(finalModelFileName + ".n3");
stevenh@37: 		FileOutputStream outFileOutputStreamRdf = null;
stevenh@37: 		FileOutputStream outFileOutputStreamN3 = null;
stevenh@37: 
stevenh@37: 		// RDF/XML version
stevenh@37: 		try {
stevenh@37: 			outFileOutputStreamRdf = new FileOutputStream(outFileRdf);
stevenh@37: 			ontModel.writeAll(outFileOutputStreamRdf, "RDF/XML", null);
stevenh@37: 		} catch (FileNotFoundException e) {
stevenh@37: 			System.out.println("Unable to write to file: "
stevenh@37: 					+ outFileRdf.getAbsolutePath());
stevenh@37: 			e.printStackTrace();
stevenh@37: 			System.exit(1);
stevenh@37: 		}
stevenh@37: 
stevenh@37: 		try {
stevenh@37: 			outFileOutputStreamRdf.close();
stevenh@37: 		} catch (IOException e1) {
stevenh@37: 			e1.printStackTrace();
stevenh@37: 			System.exit(1);
stevenh@37: 		}
stevenh@37: 
stevenh@37: 		// N3 version
stevenh@37: 		try {
stevenh@37: 			outFileOutputStreamN3 = new FileOutputStream(outFileN3);
stevenh@37: 			ontModel.writeAll(outFileOutputStreamN3, "N3", null);
stevenh@37: 		} catch (FileNotFoundException e) {
stevenh@37: 			System.out.println("Unable to write to file: "
stevenh@37: 					+ outFileN3.getAbsolutePath());
stevenh@37: 			e.printStackTrace();
stevenh@37: 			System.exit(1);
stevenh@37: 		}
stevenh@37: 
stevenh@37: 		try {
stevenh@37: 			outFileOutputStreamN3.close();
stevenh@37: 		} catch (IOException e1) {
stevenh@37: 			e1.printStackTrace();
stevenh@37: 			System.exit(1);
stevenh@37: 		}
stevenh@37: 
stevenh@37: 		System.out.println("Model written to files: "
stevenh@37: 				+ outFileRdf.getAbsolutePath() + " and " + outFileN3.getAbsolutePath());
stevenh@37: 		
stevenh@37: 		System.out.println("max tick: " + maxTick);
stevenh@37: 		
stevenh@37: 	}
stevenh@37: 
stevenh@37: 	private static HashMap<Integer, Integer> getTrackToDimensionIndexMap(Sequence sequence) {
stevenh@37: 		
stevenh@37: 		int numTracks = sequence.getTracks().length;
stevenh@37: 		int siaDatapointDimension = 2; // Dimension 1 is reserved for time
stevenh@37: 
stevenh@37: 		HashMap<Integer, Integer> trackDimensionMap = new HashMap<Integer, Integer>();
stevenh@37: 		Track[] tracks = sequence.getTracks();
stevenh@37: 		
stevenh@37: 		for (int trackIdx = 0; trackIdx < numTracks; trackIdx++)
stevenh@37: 		{
stevenh@37: 			boolean trackIsAudible = false;
stevenh@37: 			int numEvents = tracks[trackIdx].size();
stevenh@37: 
stevenh@37: 			for (int eventIdx = 0; eventIdx < numEvents; eventIdx++)
stevenh@37: 			{
stevenh@37: 				MidiEvent event = tracks[trackIdx].get(eventIdx);
stevenh@37: 				MidiMessage midiMessage = event.getMessage();
stevenh@37: 				
stevenh@37: 				// Determine the type of this message (short, sysex or meta)
stevenh@37: 				if (midiMessage instanceof ShortMessage)
stevenh@37: 				{
stevenh@37: 					// Determine which command is being issued
stevenh@37: 					ShortMessage shortMessage = (ShortMessage)midiMessage;
stevenh@37: 					int messageCommand = shortMessage.getCommand();
stevenh@37: 
stevenh@37: 					if (messageCommand == ShortMessage.NOTE_ON)
stevenh@37: 					{
stevenh@37: 						trackIsAudible = true;
stevenh@37: 						break;
stevenh@37: 					}
stevenh@37: 				}
stevenh@37: 			}
stevenh@37: 
stevenh@37: 			if (trackIsAudible)
stevenh@37: 			{
stevenh@37: 				trackDimensionMap.put(trackIdx, siaDatapointDimension);
stevenh@37: 				siaDatapointDimension++;
stevenh@37: 			}
stevenh@37: 		}
stevenh@37: 
stevenh@37: 		return trackDimensionMap;
stevenh@37: 	}
stevenh@37: 
stevenh@37: 	private static void printStmts(StmtIterator iter) {
stevenh@37: 		Statement statement;
stevenh@37: 
stevenh@37: 		while (iter.hasNext()) {
stevenh@37: 			statement = iter.nextStatement();
stevenh@37: 			System.out.println(" | <" + statement.getSubject() + "> | <"
stevenh@37: 					+ statement.getPredicate() + "> | <"
stevenh@37: 					+ statement.getObject() + "> | ");
stevenh@37: 		}
stevenh@37: 
stevenh@37: 		// And an empty line to make it pretty
stevenh@37: 		System.out.println();
stevenh@37: 	}
stevenh@37: }