QB get_guid

Just implemented for MidgardQueryBuilder.

$qb->get_guid(void);

Nice method which returns only object's guids as an array ( on PHP level ) instead of full objects. With faster query and faster value "allocator".

$qb = new MidgardQueryBuilder("midgard_article");
$qb->add_constraint("topic", ">", 0);
$qb->add_constraint("name", "=", index);
$qb->get_guid();

And query:

SELECT article.guid FROM article_i,article WHERE (article.topic > 0 AND article.name = 'index') AND article.id=article_i.sid AND article_i.lang IN (0, 0)

Intersting and good thing is that this method if fully metadata, sitegroup and multilang aware. In near future ACL will be added to "aware" list :)