concepts.db.gtw

~~LANG:FR@frman:droits2/concepts.db~~

jAcl2.db is a "db" or database driver of jAcl2. rights are stored in a database.
It implements generic concepts fo jAcl2 and add one feature: support of user
groups. Then, the basic elements defining a right are:

  * a subject 
  * a user group  
  * a resource (optional)


===== Groups and users =====

Each user is in one or more groups. Remember with jAcl2.db, a rights apply only
on one or more groups and not directly on a user.

Still, you can add a right to a specific user. it is enabled by the automatic
existence of a "private" group dedicated to each user. Each user has its own
private group in which he is alone...

There are three group types :

    * private groups. hidden in group lists
    * normal groups
    * default groups : those in which a new user is automatically added.


===== class utilities =====

Two class utilities come with jAcl2.db to manage groups, users and rights:
@@C@jAcl2DbManager@@ and @@C@jAcl2DbUserGroup@@.

Their use are similar theorically with jelix-scripts commands (described in
[[configuration|Configure jAcl2.db]]), and you can also read the
[[refapi:|reference documentation]].

===== Schema of relationnal data of jAcl2.db =====

{{jacl2db_mcd.png|}}