Loading/Storing Ecore model to/from XMI file

EcoreXMI.java

// Dependencies: org.eclipse.emf.ecore, org.eclipse.emf.ecore.xmi
// Create a resource set to hold the resources.

// Create resource set or use existing
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(MyPackage.eNS_URI, MyPackage.eINSTANCE);

// Add custom URI handler(s) if required
URIHandler myURIHandler = new URIHandlerImpl() {
			
	@Override
	public boolean canHandle(URI uri) {
		return true if handler can handle the uri
	}
			
	@Override
	public InputStream createInputStream(URI uri, Map<?, ?> options) throws IOException {
		// Implement input stream creation for reading from URI.
		return ...;
	}
  
  // Override createOutputStream and delete if needed.
			
};
		
resourceSet.getURIConverter().getURIHandlers().add(0, myURIHandler);

// Create a new model and output to console
Resource resource = resourceSet.createResource(URI.createURI("http:///My.modelextension"));
MyModelRoot root = MyModelFactory.eINSTANCE.createMyModelRoot();
resource.getContents().add(root);
resource.save(System.out, null);

// Load from file
File file = new File(...);
URI uri = file.isFile() ? URI.createFileURI(file.getAbsolutePath()): URI.createURI(...);

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

// Retrieve contents
for (EObject eObject : resource.getContents()) {
  ...
}