public static Attribute createTypeNameAttr(Class cl) 
{
        Vector v = new Vector(10);
        String[] types = getTypeNames(cl, v);
        if (types.length  > 0) {
            BasicAttribute tAttr =
                new BasicAttribute(Obj.JAVA_ATTRIBUTES[Obj.TYPENAME]);
            for (int i = 0; i <  types.length; i++) {
                tAttr.add(types[i]);
            }
            return tAttr;
        }
        return null;
}

Used by Obj and obj/RemoteToAttrs too so must be public

 public Context getInitialContext(Hashtable envprops) throws NamingException 
{
        try {
            String providerUrl = (envprops != null) ?
                (String)envprops.get(Context.PROVIDER_URL) : null;
            // If URL not in environment, use defaults
            if (providerUrl == null) {
                return new LdapCtx("", LdapCtx.DEFAULT_HOST,
                    LdapCtx.DEFAULT_PORT, envprops, false);
            }
            // Extract URL(s)
            String[] urls = LdapURL.fromList(providerUrl);
            if (urls.length == 0) {
                throw new ConfigurationException(Context.PROVIDER_URL +
                    " property does not contain a URL");
            }
            // Generate an LDAP context
            return getLdapCtxInstance(urls, envprops);
        } catch (LdapReferralException e) {
            if (envprops != null &&
                "throw".equals(envprops.get(Context.REFERRAL))) {
                throw e;
            }
            Control[] bindCtls = (envprops != null)?
                (Control[])envprops.get(LdapCtx.BIND_CONTROLS) : null;
            return (LdapCtx)e.getReferralContext(envprops, bindCtls);
        }
}

 public static DirContext getLdapCtxInstance(Object urlInfo,
    Hashtable env) throws NamingException 
{
        if (urlInfo instanceof String) {
            return getUsingURL((String)urlInfo, env);
        } else if (urlInfo instanceof String[]) {
            return getUsingURLs((String[])urlInfo, env);
        } else {
            throw new IllegalArgumentException(
                "argument must be an LDAP URL String or array of them");
        }
}

 public Object getObjectInstance(Object ref,
    Name name,
    Context nameCtx,
    Hashtable env) throws Exception 
{
    // ----------------- ObjectFactory interface --------------------
        if (!isLdapRef(ref)) {
            return null;
        }
        ObjectFactory factory = new ldapURLContextFactory();
        String[] urls = getURLs((Reference)ref);
        return factory.getObjectInstance(urls, name, nameCtx, env);
}