.* permission node

Hey, I am making a MySQL-based permissions plugin using http://wiki.bukkit.org/Developing_a_permissions_plugin as a guide but am wondering how other permissions plugins handle permission inheritance.
eg. if you have 3 permissions
something.1
something.2
something.3
then you could give the player node something.* and they would have all 3 of the above nodes. Same applies to the root * permission node which should give the user access to every node on the server. Anyone know how this is done? Cant seem to find that anywhere

Edit:
I don't want to use vault before anyone suggests that, trying to keep everything as lightweight as possible

 

mike546378 Plugins use this http://wiki.bukkit.org/Plugin_Tutorial#Permissions

And I'm not sure about your 'lightweight' justification.

 

Il just quote a previous post of mine here: http://forums.bukkit.org/threads/permisisons.294778/#post-2685043

 

AdamQpzm Necrodoom Alright, thanks. Forgot it might be managed by the individual plugins. As for that "lightweight" justification AdamQpzm, I will be running a network of atleast 30 servers all with the plugin on it, the less additional plugins I add means a significantly lower combined RAM usage even if its not much lower per server.