You could try to explain a bit more how the User class and the isUserMatching method look like.
Leo. On Fri, Sep 10, 2010 at 11:30 PM, lnguyen <[email protected]> wrote: > > I'm having difficulty writing this rule. > > Background information: > A User can have a supervisor but it's not required. > > When viewing User information I want to verify that the logged in user is > either the current user or the currentUser's supervisor but I throw an > exception when the supervisor object is null on the currentUser. > > The target is the User being viewed and I have a global object that is the > current user. How can I check to see if the supervisor exists before > evaluating if the currentUser and the supervisor are equal? > > rule 'CanViewUserData' > dialect 'mvel' > when > $user : User() > $supervisor : User( ) from $user.userProfile.supervisor > $check: PermissionCheck(target == $user, action == "viewUserData") > eval(isUserMatching($user)) || eval (isUserMatching($supervisor)) > then > System.out.println("The currentUser CanViewUserData"); > $check.grant(); > end > > -- > View this message in context: > http://drools-java-rules-engine.46999.n3.nabble.com/Verify-if-an-objects-attribute-exists-tp1455073p1455073.html > Sent from the Drools - User mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users >
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