import org.eclipse.emf.ecore.xmi.impl.XMLParserPoolImpl; //导入依赖的package包/类
public static Resource loadRefModel(String refontoumlpath) throws IOException
{
	ResourceSet rset = new ResourceSetImpl();			
	rset.getResourceFactoryRegistry().getExtensionToFactoryMap().put("refontouml",new RefOntoUMLResourceFactoryImpl());
	rset.getPackageRegistry().put(RefOntoUML.RefOntoUMLPackage.eNS_URI,	RefOntoUML.RefOntoUMLPackage.eINSTANCE);		
    File file = new File(refontoumlpath);
	URI fileURI = URI.createFileURI(file.getAbsolutePath());		
	Resource resource = rset.createResource(fileURI);		
	/**Load options that significantly improved the performance of loading EMF Model instances*/
	Map<Object,Object> loadOptions = ((XMLResourceImpl)resource).getDefaultLoadOptions();
	loadOptions.put(XMLResource.OPTION_USE_PARSER_POOL, new XMLParserPoolImpl());
	loadOptions.put(XMLResource.OPTION_DEFER_IDREF_RESOLUTION, Boolean.TRUE);
	resource.load(loadOptions);		
	return resource;		
}
 

import org.eclipse.emf.ecore.xmi.impl.XMLParserPoolImpl; //导入依赖的package包/类
/**
 * Delivers a map of options for loading resources. Especially {@link XMLResource#OPTION_DEFER_IDREF_RESOLUTION}
 * which speeds up loading
 * due to our id based resources.
 * 
 * @return map of options for {@link XMIResource} or {@link XMLResource}.
 */
@SuppressWarnings("rawtypes")
public static synchronized Map<Object, Object> getResourceLoadOptions() {
	if (resourceLoadOptions == null) {
		resourceLoadOptions = new LinkedHashMap<Object, Object>();
		resourceLoadOptions.put(XMLResource.OPTION_DEFER_ATTACHMENT, Boolean.TRUE);
		resourceLoadOptions.put(XMLResource.OPTION_DEFER_IDREF_RESOLUTION, Boolean.TRUE);
		resourceLoadOptions.put(XMLResource.OPTION_USE_DEPRECATED_METHODS, Boolean.FALSE);
		resourceLoadOptions.put(XMLResource.OPTION_USE_PARSER_POOL, new XMLParserPoolImpl());
		resourceLoadOptions.put(XMLResource.OPTION_USE_XML_NAME_TO_FEATURE_MAP, new HashMap());
		resourceLoadOptions.put(XMLResource.OPTION_USE_ENCODED_ATTRIBUTE_STYLE, Boolean.TRUE);
		resourceLoadOptions.put(XMLResource.OPTION_ENCODING, "UTF-8");
	}
	return resourceLoadOptions;
}
 

import org.eclipse.emf.ecore.xmi.impl.XMLParserPoolImpl; //导入依赖的package包/类
protected static Map<Object, Object> getLoadOptions(XMIResourceImpl resource)
{
   Map<Object, Object> options = resource.getDefaultLoadOptions();

   options.put(XMLResource.OPTION_DEFER_ATTACHMENT, Boolean.TRUE);
   options.put(XMLResource.OPTION_DEFER_IDREF_RESOLUTION, Boolean.TRUE);
   options.put(XMLResource.OPTION_USE_DEPRECATED_METHODS, Boolean.TRUE);
   options.put(XMLResource.OPTION_USE_PARSER_POOL, new XMLParserPoolImpl());
   options.put(XMLResource.OPTION_USE_XML_NAME_TO_FEATURE_MAP,
         new HashMap<Object, Object>());

   resource.setIntrinsicIDToEObjectMap(new HashMap<String, EObject>());

   return options;
}