SiteManager.getSite(URL)throws CoreException
  String type = getTypeForprotocol(URL.getprotocol);
  try {
    if (type != null){
	attemptCreationSite(type,URL);
    } else {
	attemptCreationSite("http",URL);
    }
  } catch (CoreException e){
    throw new CoreException("Cannot create site",e.getMessage());
  }

SiteManager.attemptCreationSite(type,URL)throws CoreException
  try {
    createSite(type,URL);
  } catch (InvalidTypeException e){
    try {
      createSite(e.getRealType(),URL);
    } catch (InvalidSiteExeption e){
      throw new CoreException("Wrong site type");
    }
  }

SiteManager.createSite(type,URL) throws CoreExeption, InvalidSiteTypeException


try {
			
	factory.createSite(url, forceCreation);
	
} catch (IOException e) {
	// if the URL is pointing to either a file 
// or a directory, without reference			
if (url.getRef() != null) {
	// 4 nothing we can do
	throw newCoreException("Error accessing url:"+url.toExternalForm()+"\r\n"+e.getMessage(),e);
} else if (url.getFile().endsWith("/")) {
	// 1 try to add site.xml
	try {
		url = new URL(url,Site.SITE_XML);
	} catch (MalformedURLException e1){
		throw newCoreException("Cannot create URL:"+url.toExternalForm()+"+"+Site.SITE_XML,e1);
	}
	try {
		site = factory.createSite(url, forceCreation);
	} catch (ParsingException e1){
		throw newCoreException("Error parsing URL:"+url.toExternalForm()+"\r\n"+e1.getMessage(),e1);					
	} catch (IOException e1){
		throw newCoreException("Error accessing url:"+url.toExternalForm()+"\r\n"+e1.getMessage(),e1);					
	}
} else if (url.getFile().endsWith(Site.SITE_XML)) {
	// 3 nothing we can do
	throw newCoreException("Error accessing url:"+url.toExternalForm()+"\r\n"+e.getMessage(),e);
} else {
	// 2 try to add /site.xml
	try {
		url = new URL(url.getProtocol(),url.getHost(), url.getPort(), url.getFile()+"/"+Site.SITE_XML);
	} catch (MalformedURLException e1){
		throw newCoreException("Cannot create URL:"+url.toExternalForm()+"+"+Site.SITE_XML,e1);
	}
	
	try {
		site = factory.createSite(url, forceCreation);
	} catch (ParsingException e1){
		throw newCoreException("Error parsing URL:"+url.toExternalForm()+"\r\n"+e1.getMessage()+"\r\nPrevious Input/Output Error:"+e.getMessage(),e1);					
	} catch (IOException e1){
		throw newCoreException("Error accessing url:"+url.toExternalForm()+"\r\n"+e1.getMessage()+"\r\nPrevious Input/Output Error:"+e.getMessage(),e1);					
				}				
			}

		} catch (ParsingException e) {
			
			// if the URL is pointing to either a file 
// or a directory, without reference			
if (url.getRef() != null) {
	// 4 nothing we can do
	throw newCoreException("Error parsing URL:"+url.toExternalForm()+"\r\n"+e.getMessage(),e);
} else if (url.getFile().endsWith("/")) {
	// 1 try to add site.xml
	try {
		url = new URL(url,Site.SITE_XML);
	} catch (MalformedURLException e1){
		throw newCoreException("Cannot create URL:"+url.toExternalForm()+"+"+Site.SITE_XML,e1);
	}
	try {
		site = factory.createSite(url, forceCreation);
	} catch (ParsingException e1){
		throw newCoreException("Error parsing URL:"+url.toExternalForm()+"\r\n"+e1.getMessage(),e1);					
	} catch (IOException e1){
		throw newCoreException("Error accessing url:"+url.toExternalForm()+"\r\n"+e1.getMessage(),e1);
				}				

			} else if (url.getFile().endsWith(Site.SITE_XML)) {
				// 3 nothing we can do
	throw newCoreException("Error parsing URL:"+url.toExternalForm()+"\r\n"+e.getMessage(),e);					
} else {
	// 2 try to add /site.xml
	
	try {
		url = new URL(url.getProtocol(),url.getHost(), url.getPort(), url.getFile()+"/"+Site.SITE_XML);
	} catch (MalformedURLException e1){
		throw newCoreException("Cannot create URL:"+url.toExternalForm()+"+"+Site.SITE_XML,e1);
	}
	try {
		site = factory.createSite(url, forceCreation);
	} catch (ParsingException e1){
		throw newCoreException("Error parsing URL:"+url.toExternalForm()+"\r\n"+e1.getMessage()+"\r\nPrevious Parsing error:"+e.getMessage(),e1);					
	} catch (IOException e1){
		throw newCoreException("Error accessing url:"+url.toExternalForm()+"\r\n"+e1.getMessage()+"\r\nPrevious Parsing error:"+e.getMessage(),e1);