java - Session mixup for jsf sessionscope and jaas login module -

we have customloginmodule (extending usernamepasswordloginmodule) puts user , session references in map @ login time. stored in @javax.enterprise.context.applicationscoped bean.

at logout, these references removed. capture unexpected logouts, method remove these references called @predestroy method of javax.enterprise.context.sessionscoped bean.

when user logs in @ 2 locations, first location's session invalidated, , it's reference removed map. means when user logs in @ second location, corresponding record removed map, , @predestroy method tries remove again.

not big problem say, we'll pass currect session reference @predestroy method, , compare session in map, , remove session, if both equal. however, , herein lies question, apparently @predestroy method of new instance called on session logout. after @predestroy method called, same session bean happily continues function.

i'm not interested in alternatives, since there plenty. wondering how possible.

the classes in question complicated paste here, tried render intentions:

login module:

public class customloginmodule extends usernamepasswordloginmodule {     login(){         sessionmap.addtomap(username, currentsession);     } } 

applicationscoped:

@applicationscoped public class sessionmap{     addtomap(string username, httpsession currentsession){          // present session          previoussession.invalidate(); // triggers predestroy of sessionscoped          // remove previous session map          // put new session in map     } } 

sessionscoped:

@sessionscoped public mysessionbean{     @predestroy     public void removesession(){         // predestroy called after session invalidated in addtomap method         // however, if log hash of class, see second         // class's predestroy called, not first         sessionmap.removefrommap(username, currentsession);     } }