Grouper Developers Forum

[Chris Hyzer <>]

There are two cases:

1. If you are in a hook, and you know there is an active grouper session 
being used, and you want to use it (or get a root session from it), then call:

GrouperSession grouperSession = GrouperSession.staticGrouperSession();

Don't stop it when done.  :)

2. If there might not be an existing session (e.g. asynchrounous hook, or 
hook on operation which doesn't require a session, though most do, might be 
hard to know :) ), then you can start a new one, and do it like the email 
example (note, below I stop session in finally block which is probably better 
:) ).  Also note that any variables you want to use in the callback need to 
be declared as final...

  static void checkEmailAddress(final String emailAddress) {

    try {
      //start session, dont clobber existing session
      GrouperSession grouperSession = 
GrouperSession.start(SubjectFinder.findRootSubject(), false);
      GrouperSession.callbackGrouperSession(grouperSession, new 
GrouperSessionHandler() {
  
        public Object callback(GrouperSession grouperSession)
            throws GrouperSessionException {
          
          //do your logic          
          
          return null;
        }
        
      });
    } catch (Exception e) {
      throw new RuntimeException("Problem checking email address: '" + 
emailAddress + "'", e);
    } finally {
      GrouperSession.stopQuietly(grouperSession);
    }
  }


> -----Original Message-----
> From: Arnaud Deman 
> [mailto:]
> Sent: Friday, August 07, 2009 9:10 AM
> To: 
> 
> Subject: [grouper-dev] Use of sessions in hooks
> 
> Hello,
> 
> Could someone tell me how to use/create a GrouperSession when you don't
> know if another one is already started.
> I looked at the example in checkEmailAddress of
> GroupHooksImplExampleEmail - Is it the good way ?
> 
> I have a no deterministic error when I stress test my system and I
> think
> that maybe it's because I don't use the sessions correctly.
> 
> Many thanks,
> Arnaud.
> 
> 
> 
> 
> 
> --
> 
> Arnaud Deman
> GIP RECIA
> Parc d'activités les Aulnaies
> 151 rue de la Juine - 45160 OLIVET
> Tel : 02 38 42 14 69
>