Code for converting an EMF file containing ID-based references to EMF fragment path style references. Models using the latter format appear to be quicker to load than equivalent models using the former.

PetriNetConvert.java

/**
 * <copyright>
 * </copyright>
 *
 * $Id$
 */
package PetriNet.tests;

import PetriNet.Net;
import PetriNet.PetriNetFactory;
import PetriNet.PetriNetPackage;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.eclipse.emf.common.util.Diagnostic;
import org.eclipse.emf.common.util.URI;

import org.eclipse.emf.ecore.EObject;

import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;

import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;

import org.eclipse.emf.ecore.util.Diagnostician;

import org.eclipse.emf.ecore.xmi.XMIResource;
import org.eclipse.emf.ecore.xmi.XMLResource;
import org.eclipse.emf.ecore.xmi.impl.XMIResourceFactoryImpl;

/**
 * <!-- begin-user-doc -->
 * A sample utility for the '<em><b>PetriNet</b></em>' package.
 * <!-- end-user-doc -->
 * @generated
 */
public class PetriNetConvert
{
  /**
   * <!-- begin-user-doc -->
   * Load all the argument file paths or URIs as instances of the model.
   * <!-- end-user-doc -->
   * @param args the file paths or URIs.
   * @generated
   */
  public static void main(String[] args)
  {
   printTime();
	  
    // Create a resource set to hold the resources.
    //
    ResourceSet resourceSet = new ResourceSetImpl();
    
    // Register the appropriate resource factory to handle all file extensions.
    //
    resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put
      (Resource.Factory.Registry.DEFAULT_EXTENSION, 
       new XMIResourceFactoryImpl());

    // Register the package to ensure it is available during loading.
    //
    resourceSet.getPackageRegistry().put
      (PetriNetPackage.eNS_URI, 
       PetriNetPackage.eINSTANCE);
        
    // If there are no arguments, emit an appropriate usage message.
    //
    if (args.length == 0)
    {
      System.out.println("Enter a list of file paths or URIs that have content like this:");
      try
      {
        Resource resource = resourceSet.createResource(URI.createURI("http:///My.petrinet"));
        Net root = PetriNetFactory.eINSTANCE.createNet();
        resource.getContents().add(root);
        resource.save(System.out, null);
      }
      catch (IOException exception) 
      {
        exception.printStackTrace();
      }
    }
    else
    {
      // Iterate over all the arguments.
      //
      for (int i = 0; i < args.length; ++i)
      {
        // Construct the URI for the instance file.
        // The argument is treated as a file path only if it denotes an existing file.
        // Otherwise, it's directly treated as a URL.
        //
        File file = new File(args[i]);
        URI uri = file.isFile() ? URI.createFileURI(file.getAbsolutePath()): URI.createURI(args[i]);

        try
        {
          // Demand load resource for this file.
          //
          Resource resource = resourceSet.getResource(uri, true);
          System.out.println("Loaded " + uri);

          resource.setURI(uri.appendFileExtension("converted"));
          
          for (Iterator<EObject> it = resource.getAllContents(); it.hasNext();) {
        	  EObject next = it.next();
        	  ((XMIResource)(next.eResource())).setID(next, null);
          }
          
          System.out.println("Converted " + uri);
          
          resource.save(null);
          
          System.out.println("Saved " + uri);
     
        }
        catch (Exception exception) 
        {
          System.out.println("Problem loading " + uri);
          exception.printStackTrace();
        }
      }
    }
    
    printTime();
  }
  
  /**
   * <!-- begin-user-doc -->
   * Prints diagnostics with indentation.
   * <!-- end-user-doc -->
   * @param diagnostic the diagnostic to print.
   * @param indent the indentation for printing.
   * @generated
   */
  protected static void printDiagnostic(Diagnostic diagnostic, String indent)
  {
    System.out.print(indent);
    System.out.println(diagnostic.getMessage());
    for (Diagnostic child : diagnostic.getChildren())
    {
      printDiagnostic(child, indent + "  ");
    }
  }
  
  private static void printTime() {
	  Calendar cal = Calendar.getInstance();
	  cal.getTime();
	  SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
	  System.out.println( sdf.format(cal.getTime()) );
  }

} //PetriNetExample