Metacat

            AuthToken token = new AuthToken(sessionid);

            EventLog.getInstance().log(metacatUrl,

                    username, null, "authenticate");

            return token;

        }

        catch(Exception e)

            InputStream object, SystemMetadata sysmeta) throws InvalidToken, 

            ServiceFailure, NotAuthorized, IdentifierNotUnique, UnsupportedType, 

            InsufficientResources, InvalidSystemMetadata, NotImplemented {

        logMetacat.debug("Starting CrudService.create()...");

        // authenticate & get user info

        SessionData sessionData = getSessionData(token);

        String username = "public";

        logMetacat.debug("Checking if identifier exists...");

        // Check that the identifier does not already exist

        if (im.identifierExists(guid.getValue())) {

            throw new IdentifierNotUnique("1120", 

                "GUID is already in use by an existing object.");

        logMetacat.debug("Returning from CrudService.create()");

        EventLog.getInstance().log(metacatUrl,

                username, localId, "create");

        logCrud.info("create localId:" + localId + " guid:" + guid.getValue());

        return guid;

    }