core/org.eclipse.stem.graphgenerators/src/org/eclipse/stem/graphgenerators/impl/MigrationEdgeGraphGeneratorImpl.java - stem/org.eclipse.stem - Git at Google

 /*******************************************************************************
  * Copyright (c) 2009,2010 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.stem.graphgenerators.impl;

 import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Iterator;
 import java.util.Set;

 import org.eclipse.core.resources.IProject;
 import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.EClass;
 import org.eclipse.emf.ecore.impl.ENotificationImpl;
 import org.eclipse.stem.core.STEMURI;
 import org.eclipse.stem.core.Utility;
 import org.eclipse.stem.core.common.DublinCore;
 import org.eclipse.stem.core.graph.Edge;
 import org.eclipse.stem.core.graph.Graph;
 import org.eclipse.stem.core.graph.GraphFactory;
 import org.eclipse.stem.definitions.LocationUtility;
 import org.eclipse.stem.definitions.edges.EdgesFactory;
 import org.eclipse.stem.definitions.edges.MigrationEdge;
 import org.eclipse.stem.definitions.edges.MigrationEdgeLabel;
 import org.eclipse.stem.definitions.edges.MigrationEdgeLabelValue;
 import org.eclipse.stem.definitions.edges.impl.EdgesFactoryImpl;
 import org.eclipse.stem.graphgenerators.GraphgeneratorsPackage;
 import org.eclipse.stem.graphgenerators.MigrationEdgeGraphGenerator;

 /**
  * <!-- begin-user-doc -->
  * An implementation of the model object '<em><b>Migration Edge Graph Generator</b></em>'.
  * <!-- end-user-doc -->
  * <p>
  * The following features are implemented:
  * <ul>
  *   <li>{@link org.eclipse.stem.graphgenerators.impl.MigrationEdgeGraphGeneratorImpl#getLocation <em>Location</em>}</li>
  *   <li>{@link org.eclipse.stem.graphgenerators.impl.MigrationEdgeGraphGeneratorImpl#getMigrationRate <em>Migration Rate</em>}</li>
  *   <li>{@link org.eclipse.stem.graphgenerators.impl.MigrationEdgeGraphGeneratorImpl#getPopulation <em>Population</em>}</li>
  * </ul>
  * </p>
  *
  * @generated
  */
 public class MigrationEdgeGraphGeneratorImpl extends GraphGeneratorImpl implements MigrationEdgeGraphGenerator {
 	/**
 	 * The default value of the '{@link #getLocation() <em>Location</em>}' attribute.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @see #getLocation()
 	 * @generated
 	 * @ordered
 	 */
 	protected static final URI LOCATION_EDEFAULT = null;

 	/**
 	 * The cached value of the '{@link #getLocation() <em>Location</em>}' attribute.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @see #getLocation()
 	 * @generated
 	 * @ordered
 	 */
 	protected URI location = LOCATION_EDEFAULT;

 	/**
 	 * The default value of the '{@link #getMigrationRate() <em>Migration Rate</em>}' attribute.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @see #getMigrationRate()
 	 * @generated
 	 * @ordered
 	 */
 	protected static final double MIGRATION_RATE_EDEFAULT = 0.1;

 	/**
 	 * The cached value of the '{@link #getMigrationRate() <em>Migration Rate</em>}' attribute.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @see #getMigrationRate()
 	 * @generated
 	 * @ordered
 	 */
 	protected double migrationRate = MIGRATION_RATE_EDEFAULT;

 	/**
 	 * The default value of the '{@link #getPopulation() <em>Population</em>}' attribute.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @see #getPopulation()
 	 * @generated
 	 * @ordered
 	 */
 	protected static final String POPULATION_EDEFAULT = "human";

 	/**
 	 * The cached value of the '{@link #getPopulation() <em>Population</em>}' attribute.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @see #getPopulation()
 	 * @generated
 	 * @ordered
 	 */
 	protected String population = POPULATION_EDEFAULT;

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated NOT
 	 */
 	public MigrationEdgeGraphGeneratorImpl() {
 		super();
 	}

 	/**
 	 * Generate migration edges
 	 */
 	@Override
 	public Graph getGraph() {
 		final Graph graph = GraphFactory.eINSTANCE.createGraph();
 		final DublinCore dc = graph.getDublinCore();
 		dc.populate();
 		dc.setTitle(MIGRATION_EDGE_TYPE);
 		dc.setSource(this.getClass().getSimpleName());
 		Calendar c = Calendar.getInstance();
         SimpleDateFormat formatter = new SimpleDateFormat("E yyyy.MM.dd 'at' hh:mm:ss a zzz");
         String valid = formatter.format(c.getTime());
        	dc.setValid(valid);
        	// TODO for now, just for testing
        	// gets ALL common border edges
        	Set<Edge> commonBorderEdges = LocationUtility.getCommonBorderEdges(project, this.getLocation());

 		Iterator<Edge> iter = commonBorderEdges.iterator();
 		while((iter!=null)&&(iter.hasNext())){
        	 		Edge e = iter.next();
 				int sourceLevel = Utility.keyLevel(e.getNodeAURI().lastSegment());
 				int targetLevel = Utility.keyLevel(e.getNodeBURI().lastSegment());
 				URI sourceURI = e.getNodeAURI();
 				URI targetURI = e.getNodeBURI();

 				EdgesFactory ef = EdgesFactoryImpl.init();
 				MigrationEdge mEdge1 = ef.createMigrationEdge();
 				MigrationEdge mEdge2 = ef.createMigrationEdge();

 				// The URI of the edge 1
 				URI edgeURI1 = mEdge1.getURI();
 				// the autogenerated edge uri is not correct. Need to replace it
 				String s1 = edgeURI1.toString();
 				int last = s1.lastIndexOf("/");
 				String sEdge1 = s1.substring(0,last);
 				String sEdge2 = s1.substring(last,s1.length());
 				s1 = sEdge1+"/relationship/migration"+sEdge2;
 				URI newURI = URI.createURI(s1);
 				mEdge1.setURI(newURI);


 				// The URI of the edge 2
 				URI edgeURI2 = mEdge2.getURI();
 				// the autogenerated edge uri is not correct. Need to replace it
 				String s2 = edgeURI2.toString();
 				int last2 = s2.lastIndexOf("/");
 				sEdge1 = s2.substring(0,last2);
 				sEdge2 = s2.substring(last,s2.length());
 				s2 = sEdge1+"/relationship/migration"+sEdge2;
 				URI newURI2 = URI.createURI(s2);
 				mEdge2.setURI(newURI2);

 				// ADD The URIs of the nodes connected by these two directed edges
 				// A => B
 				mEdge1.setNodeAURI(sourceURI);
 				mEdge1.setNodeBURI(targetURI);
 				// B => A
 				mEdge2.setNodeBURI(sourceURI);
 				mEdge2.setNodeAURI(targetURI);

 				// now we need to set the uri for the label
 				MigrationEdgeLabel label1 = mEdge1.getLabel();
 				MigrationEdgeLabel label2 = mEdge2.getLabel();

 				//System.out.println("BEFORE: mEdgeLabel1 URI was "+label1.getURI().toString());
 				//System.out.println("BEFORE: mEdgeLabel2 URI was "+label2.getURI().toString());

 				label1.setURI(createEdgeLabelURI(sourceURI, targetURI));
 				label2.setURI(createEdgeLabelURI(targetURI, sourceURI));

 				MigrationEdgeLabelValue melv1 = label1.getCurrentValue();
 				melv1.setMigrationRate(this.getMigrationRate());
 				MigrationEdgeLabelValue melv2 = label2.getCurrentValue();
 				melv2.setMigrationRate(this.getMigrationRate());

 				final DublinCore dc1 = mEdge1.getDublinCore();
 				dc1.setTitle(createEdgeTitle(sourceURI, targetURI));

 				final DublinCore dc2 = mEdge2.getDublinCore();
 				dc2.setTitle(createEdgeTitle(targetURI, sourceURI));

 				mEdge1.setPopulationIdentifier(this.getPopulation());
 				mEdge2.setPopulationIdentifier(this.getPopulation());

 				graph.putEdge(mEdge1);
 				graph.putEdge(mEdge2);
 		}

 		assert graph.sane();

 		return graph;
 		}// getGraph

 	/**
 	 * IProject to create edges in
 	 */
 	private IProject project;
 	public IProject getProject() {
 		return project;
 	}
 	public void setProject(IProject p) {
 		this.project = p;
 	}

 	/**
 	 *
 	 * @param uriA
 	 * @param uriB
 	 * @return
 	 */
 	private static URI createEdgeLabelURI(URI uriA, URI uriB) {

 		//System.out.println("createEdgeLabelURI() : initially, uriA = "+uriA.toString());
 		//System.out.println("createEdgeLabelURI() : initially, uriB = "+uriB.toString());

 		String sA = uriA.lastSegment();
 		String sB = uriB.lastSegment();

 		// TODO is this still true??
 		// MigrationEdgeLabelItemProvider
 		// uses _ as a special character to separate the two nodes
 		// so we need to replace it.
 		sA=sA.replace('_','.');
 		sB=sB.replace('_','.');
 		String uriString = sA+"_"+sB;

 		//System.out.println("createEdgeLabelURI() : FINALLY, uri = "+uriString);

         URI uri = STEMURI.createURI(uriString);
 		return uri;
 	} // createRegionNodeURI

 	/**
 	 * @param x
 	 *            the x of the node in the lattice
 	 * @param y
 	 *            the y of the node in the lattice
 	 * @return a title for a node
 	 */
 	public static String createEdgeTitle(URI uriA, URI uriB) {
 		String sA = uriA.lastSegment();
 		String sB = uriB.lastSegment();
 		final StringBuilder sb = new StringBuilder("MigrationEdge[(");
 		sb.append(sA);
 		sb.append(")<-->(");
 		sb.append(sB);
 		sb.append(")]");

 		return sb.toString();
 	} // createEdgeTitle

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	protected EClass eStaticClass() {
 		return GraphgeneratorsPackage.Literals.MIGRATION_EDGE_GRAPH_GENERATOR;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public URI getLocation() {
 		return location;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public void setLocation(URI newLocation) {
 		URI oldLocation = location;
 		location = newLocation;
 		if (eNotificationRequired())
 			eNotify(new ENotificationImpl(this, Notification.SET, GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__LOCATION, oldLocation, location));
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public double getMigrationRate() {
 		return migrationRate;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public void setMigrationRate(double newMigrationRate) {
 		double oldMigrationRate = migrationRate;
 		migrationRate = newMigrationRate;
 		if (eNotificationRequired())
 			eNotify(new ENotificationImpl(this, Notification.SET, GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__MIGRATION_RATE, oldMigrationRate, migrationRate));
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public String getPopulation() {
 		return population;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public void setPopulation(String newPopulation) {
 		String oldPopulation = population;
 		population = newPopulation;
 		if (eNotificationRequired())
 			eNotify(new ENotificationImpl(this, Notification.SET, GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__POPULATION, oldPopulation, population));
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public Object eGet(int featureID, boolean resolve, boolean coreType) {
 		switch (featureID) {
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__LOCATION:
 				return getLocation();
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__MIGRATION_RATE:
 				return getMigrationRate();
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__POPULATION:
 				return getPopulation();
 		}
 		return super.eGet(featureID, resolve, coreType);
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public void eSet(int featureID, Object newValue) {
 		switch (featureID) {
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__LOCATION:
 				setLocation((URI)newValue);
 				return;
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__MIGRATION_RATE:
 				setMigrationRate((Double)newValue);
 				return;
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__POPULATION:
 				setPopulation((String)newValue);
 				return;
 		}
 		super.eSet(featureID, newValue);
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public void eUnset(int featureID) {
 		switch (featureID) {
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__LOCATION:
 				setLocation(LOCATION_EDEFAULT);
 				return;
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__MIGRATION_RATE:
 				setMigrationRate(MIGRATION_RATE_EDEFAULT);
 				return;
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__POPULATION:
 				setPopulation(POPULATION_EDEFAULT);
 				return;
 		}
 		super.eUnset(featureID);
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public boolean eIsSet(int featureID) {
 		switch (featureID) {
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__LOCATION:
 				return LOCATION_EDEFAULT == null ? location != null : !LOCATION_EDEFAULT.equals(location);
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__MIGRATION_RATE:
 				return migrationRate != MIGRATION_RATE_EDEFAULT;
 			case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__POPULATION:
 				return POPULATION_EDEFAULT == null ? population != null : !POPULATION_EDEFAULT.equals(population);
 		}
 		return super.eIsSet(featureID);
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public String toString() {
 		if (eIsProxy()) return super.toString();

 		StringBuffer result = new StringBuffer(super.toString());
 		result.append(" (location: ");
 		result.append(location);
 		result.append(", migrationRate: ");
 		result.append(migrationRate);
 		result.append(", population: ");
 		result.append(population);
 		result.append(')');
 		return result.toString();
 	}

 } //MigrationEdgeGraphGeneratorImpl
	/*******************************************************************************
	* Copyright (c) 2009,2010 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.stem.graphgenerators.impl;

	import java.text.SimpleDateFormat;
	import java.util.Calendar;
	import java.util.Iterator;
	import java.util.Set;

	import org.eclipse.core.resources.IProject;
	import org.eclipse.emf.common.notify.Notification;
	import org.eclipse.emf.common.util.URI;
	import org.eclipse.emf.ecore.EClass;
	import org.eclipse.emf.ecore.impl.ENotificationImpl;
	import org.eclipse.stem.core.STEMURI;
	import org.eclipse.stem.core.Utility;
	import org.eclipse.stem.core.common.DublinCore;
	import org.eclipse.stem.core.graph.Edge;
	import org.eclipse.stem.core.graph.Graph;
	import org.eclipse.stem.core.graph.GraphFactory;
	import org.eclipse.stem.definitions.LocationUtility;
	import org.eclipse.stem.definitions.edges.EdgesFactory;
	import org.eclipse.stem.definitions.edges.MigrationEdge;
	import org.eclipse.stem.definitions.edges.MigrationEdgeLabel;
	import org.eclipse.stem.definitions.edges.MigrationEdgeLabelValue;
	import org.eclipse.stem.definitions.edges.impl.EdgesFactoryImpl;
	import org.eclipse.stem.graphgenerators.GraphgeneratorsPackage;
	import org.eclipse.stem.graphgenerators.MigrationEdgeGraphGenerator;

	/**
	* <!-- begin-user-doc -->
	* An implementation of the model object '<em><b>Migration Edge Graph Generator</b></em>'.
	* <!-- end-user-doc -->
	* <p>
	* The following features are implemented:
	* <ul>
	* <li>{@link org.eclipse.stem.graphgenerators.impl.MigrationEdgeGraphGeneratorImpl#getLocation <em>Location</em>}</li>
	* <li>{@link org.eclipse.stem.graphgenerators.impl.MigrationEdgeGraphGeneratorImpl#getMigrationRate <em>Migration Rate</em>}</li>
	* <li>{@link org.eclipse.stem.graphgenerators.impl.MigrationEdgeGraphGeneratorImpl#getPopulation <em>Population</em>}</li>
	* </ul>
	* </p>
	*
	* @generated
	*/
	public class MigrationEdgeGraphGeneratorImpl extends GraphGeneratorImpl implements MigrationEdgeGraphGenerator {
	/**
	* The default value of the '{@link #getLocation() <em>Location</em>}' attribute.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @see #getLocation()
	* @generated
	* @ordered
	*/
	protected static final URI LOCATION_EDEFAULT = null;

	/**
	* The cached value of the '{@link #getLocation() <em>Location</em>}' attribute.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @see #getLocation()
	* @generated
	* @ordered
	*/
	protected URI location = LOCATION_EDEFAULT;

	/**
	* The default value of the '{@link #getMigrationRate() <em>Migration Rate</em>}' attribute.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @see #getMigrationRate()
	* @generated
	* @ordered
	*/
	protected static final double MIGRATION_RATE_EDEFAULT = 0.1;

	/**
	* The cached value of the '{@link #getMigrationRate() <em>Migration Rate</em>}' attribute.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @see #getMigrationRate()
	* @generated
	* @ordered
	*/
	protected double migrationRate = MIGRATION_RATE_EDEFAULT;

	/**
	* The default value of the '{@link #getPopulation() <em>Population</em>}' attribute.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @see #getPopulation()
	* @generated
	* @ordered
	*/
	protected static final String POPULATION_EDEFAULT = "human";

	/**
	* The cached value of the '{@link #getPopulation() <em>Population</em>}' attribute.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @see #getPopulation()
	* @generated
	* @ordered
	*/
	protected String population = POPULATION_EDEFAULT;

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated NOT
	*/
	public MigrationEdgeGraphGeneratorImpl() {
	super();
	}

	/**
	* Generate migration edges
	*/
	@Override
	public Graph getGraph() {
	final Graph graph = GraphFactory.eINSTANCE.createGraph();
	final DublinCore dc = graph.getDublinCore();
	dc.populate();
	dc.setTitle(MIGRATION_EDGE_TYPE);
	dc.setSource(this.getClass().getSimpleName());
	Calendar c = Calendar.getInstance();
	SimpleDateFormat formatter = new SimpleDateFormat("E yyyy.MM.dd 'at' hh:mm:ss a zzz");
	String valid = formatter.format(c.getTime());
	dc.setValid(valid);
	// TODO for now, just for testing
	// gets ALL common border edges
	Set<Edge> commonBorderEdges = LocationUtility.getCommonBorderEdges(project, this.getLocation());

	Iterator<Edge> iter = commonBorderEdges.iterator();
	while((iter!=null)&&(iter.hasNext())){
	Edge e = iter.next();
	int sourceLevel = Utility.keyLevel(e.getNodeAURI().lastSegment());
	int targetLevel = Utility.keyLevel(e.getNodeBURI().lastSegment());
	URI sourceURI = e.getNodeAURI();
	URI targetURI = e.getNodeBURI();

	EdgesFactory ef = EdgesFactoryImpl.init();
	MigrationEdge mEdge1 = ef.createMigrationEdge();
	MigrationEdge mEdge2 = ef.createMigrationEdge();

	// The URI of the edge 1
	URI edgeURI1 = mEdge1.getURI();
	// the autogenerated edge uri is not correct. Need to replace it
	String s1 = edgeURI1.toString();
	int last = s1.lastIndexOf("/");
	String sEdge1 = s1.substring(0,last);
	String sEdge2 = s1.substring(last,s1.length());
	s1 = sEdge1+"/relationship/migration"+sEdge2;
	URI newURI = URI.createURI(s1);
	mEdge1.setURI(newURI);


	// The URI of the edge 2
	URI edgeURI2 = mEdge2.getURI();
	// the autogenerated edge uri is not correct. Need to replace it
	String s2 = edgeURI2.toString();
	int last2 = s2.lastIndexOf("/");
	sEdge1 = s2.substring(0,last2);
	sEdge2 = s2.substring(last,s2.length());
	s2 = sEdge1+"/relationship/migration"+sEdge2;
	URI newURI2 = URI.createURI(s2);
	mEdge2.setURI(newURI2);

	// ADD The URIs of the nodes connected by these two directed edges
	// A => B
	mEdge1.setNodeAURI(sourceURI);
	mEdge1.setNodeBURI(targetURI);
	// B => A
	mEdge2.setNodeBURI(sourceURI);
	mEdge2.setNodeAURI(targetURI);

	// now we need to set the uri for the label
	MigrationEdgeLabel label1 = mEdge1.getLabel();
	MigrationEdgeLabel label2 = mEdge2.getLabel();

	//System.out.println("BEFORE: mEdgeLabel1 URI was "+label1.getURI().toString());
	//System.out.println("BEFORE: mEdgeLabel2 URI was "+label2.getURI().toString());

	label1.setURI(createEdgeLabelURI(sourceURI, targetURI));
	label2.setURI(createEdgeLabelURI(targetURI, sourceURI));

	MigrationEdgeLabelValue melv1 = label1.getCurrentValue();
	melv1.setMigrationRate(this.getMigrationRate());
	MigrationEdgeLabelValue melv2 = label2.getCurrentValue();
	melv2.setMigrationRate(this.getMigrationRate());

	final DublinCore dc1 = mEdge1.getDublinCore();
	dc1.setTitle(createEdgeTitle(sourceURI, targetURI));

	final DublinCore dc2 = mEdge2.getDublinCore();
	dc2.setTitle(createEdgeTitle(targetURI, sourceURI));

	mEdge1.setPopulationIdentifier(this.getPopulation());
	mEdge2.setPopulationIdentifier(this.getPopulation());

	graph.putEdge(mEdge1);
	graph.putEdge(mEdge2);
	}

	assert graph.sane();

	return graph;
	}// getGraph

	/**
	* IProject to create edges in
	*/
	private IProject project;
	public IProject getProject() {
	return project;
	}
	public void setProject(IProject p) {
	this.project = p;
	}

	/**
	*
	* @param uriA
	* @param uriB
	* @return
	*/
	private static URI createEdgeLabelURI(URI uriA, URI uriB) {

	//System.out.println("createEdgeLabelURI() : initially, uriA = "+uriA.toString());
	//System.out.println("createEdgeLabelURI() : initially, uriB = "+uriB.toString());

	String sA = uriA.lastSegment();
	String sB = uriB.lastSegment();

	// TODO is this still true??
	// MigrationEdgeLabelItemProvider
	// uses _ as a special character to separate the two nodes
	// so we need to replace it.
	sA=sA.replace('_','.');
	sB=sB.replace('_','.');
	String uriString = sA+"_"+sB;

	//System.out.println("createEdgeLabelURI() : FINALLY, uri = "+uriString);

	URI uri = STEMURI.createURI(uriString);
	return uri;
	} // createRegionNodeURI

	/**
	* @param x
	* the x of the node in the lattice
	* @param y
	* the y of the node in the lattice
	* @return a title for a node
	*/
	public static String createEdgeTitle(URI uriA, URI uriB) {
	String sA = uriA.lastSegment();
	String sB = uriB.lastSegment();
	final StringBuilder sb = new StringBuilder("MigrationEdge[(");
	sb.append(sA);
	sb.append(")<-->(");
	sb.append(sB);
	sb.append(")]");

	return sb.toString();
	} // createEdgeTitle

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	protected EClass eStaticClass() {
	return GraphgeneratorsPackage.Literals.MIGRATION_EDGE_GRAPH_GENERATOR;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public URI getLocation() {
	return location;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public void setLocation(URI newLocation) {
	URI oldLocation = location;
	location = newLocation;
	if (eNotificationRequired())
	eNotify(new ENotificationImpl(this, Notification.SET, GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__LOCATION, oldLocation, location));
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public double getMigrationRate() {
	return migrationRate;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public void setMigrationRate(double newMigrationRate) {
	double oldMigrationRate = migrationRate;
	migrationRate = newMigrationRate;
	if (eNotificationRequired())
	eNotify(new ENotificationImpl(this, Notification.SET, GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__MIGRATION_RATE, oldMigrationRate, migrationRate));
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public String getPopulation() {
	return population;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public void setPopulation(String newPopulation) {
	String oldPopulation = population;
	population = newPopulation;
	if (eNotificationRequired())
	eNotify(new ENotificationImpl(this, Notification.SET, GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__POPULATION, oldPopulation, population));
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
	switch (featureID) {
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__LOCATION:
	return getLocation();
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__MIGRATION_RATE:
	return getMigrationRate();
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__POPULATION:
	return getPopulation();
	}
	return super.eGet(featureID, resolve, coreType);
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public void eSet(int featureID, Object newValue) {
	switch (featureID) {
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__LOCATION:
	setLocation((URI)newValue);
	return;
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__MIGRATION_RATE:
	setMigrationRate((Double)newValue);
	return;
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__POPULATION:
	setPopulation((String)newValue);
	return;
	}
	super.eSet(featureID, newValue);
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public void eUnset(int featureID) {
	switch (featureID) {
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__LOCATION:
	setLocation(LOCATION_EDEFAULT);
	return;
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__MIGRATION_RATE:
	setMigrationRate(MIGRATION_RATE_EDEFAULT);
	return;
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__POPULATION:
	setPopulation(POPULATION_EDEFAULT);
	return;
	}
	super.eUnset(featureID);
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public boolean eIsSet(int featureID) {
	switch (featureID) {
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__LOCATION:
	return LOCATION_EDEFAULT == null ? location != null : !LOCATION_EDEFAULT.equals(location);
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__MIGRATION_RATE:
	return migrationRate != MIGRATION_RATE_EDEFAULT;
	case GraphgeneratorsPackage.MIGRATION_EDGE_GRAPH_GENERATOR__POPULATION:
	return POPULATION_EDEFAULT == null ? population != null : !POPULATION_EDEFAULT.equals(population);
	}
	return super.eIsSet(featureID);
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public String toString() {
	if (eIsProxy()) return super.toString();

	StringBuffer result = new StringBuffer(super.toString());
	result.append(" (location: ");
	result.append(location);
	result.append(", migrationRate: ");
	result.append(migrationRate);
	result.append(", population: ");
	result.append(population);
	result.append(')');
	return result.toString();
	}

	} //MigrationEdgeGraphGeneratorImpl