[news.eclipse.tools.emf] Re: Model Migration

[Mike Gering <mike@xxxxxxx>]

Ed,

Thanks for prompt and excellent advice, as always!

Here is a revised code fragment:

public class RulesResourceFactoryImpl extends XMIResourceFactoryImpl {

	public static final String RULES_100_NS_URI = "http://www.ibm.com/vce/1.0.0/rules";;
	public static final String RULES_PLATFORM_URI = "platform:/plugin/com.ibm.adt.vce.rules.model/model/Rules.ecore";
	public static final String RULES_100_PLATFORM_URI = "platform:/plugin/com.ibm.adt.vce.rules.model/model/Rules100_2_Rules.ecore2xml";

	private ExtendedMetaData extendedMetaData;
	
	/* (non-Javadoc)
	 * @see org.eclipse.emf.ecore.resource.impl.ResourceFactoryImpl#createResource(org.eclipse.emf.common.util.URI)
	 */
	public Resource createResource(URI uri) {
		XMIResource resource = (XMIResource) super.createResource(uri);

		Map defaultLoadOptions = resource.getDefaultLoadOptions();
		defaultLoadOptions.put(XMLResource.OPTION_EXTENDED_META_DATA,
				getExtendedMetaData());
		defaultLoadOptions.put(XMLResource.OPTION_RECORD_UNKNOWN_FEATURE,
				Boolean.TRUE);
		defaultLoadOptions.put(XMLResource.OPTION_RESOURCE_HANDLER,
				new RulesResourceHandler());
		return resource;
	}

	private ExtendedMetaData getExtendedMetaData() {
		if(extendedMetaData == null) {
			ResourceSet resourceSet = new ResourceSetImpl();
			EPackage.Registry ePackageRegistry = resourceSet.getPackageRegistry();
			ePackageRegistry.put(RULES_100_NS_URI, RulesPackage.eINSTANCE);
			ePackageRegistry.put(RULES_PLATFORM_URI, RulesPackage.eINSTANCE);
			resourceSet.setPackageRegistry(ePackageRegistry);
			Ecore2XMLRegistry ecore2xmlRegistry = new Ecore2XMLRegistryImpl(Ecore2XMLRegistry.INSTANCE);
			ecore2xmlRegistry.put(RULES_100_NS_URI,
					EcoreUtil.getObjectByType(
							resourceSet.getResource(URI.createURI(RULES_100_PLATFORM_URI),
									true).getContents(),
									Ecore2XMLPackage.Literals.XML_MAP));
			extendedMetaData = new Ecore2XMLExtendedMetaData(EPackage.Registry.INSTANCE, ecore2xmlRegistry);			
		}
		return extendedMetaData;
	}
}

If this passes muster, I can consider making a recipe of it. I found it
distressingly hard to get this far by reading the various newsgroup articles and
the EclipseCon 2006 slides.

Thanks again,
Mike