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RE: [grouper-dev] When to use GrouperSession.staticGrouperSession() ?

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  • From: Chris Hyzer <>
  • To: Tom Zeller <>
  • Cc: Grouper Dev <>
  • Subject: RE: [grouper-dev] When to use GrouperSession.staticGrouperSession() ?
  • Date: Wed, 14 Apr 2010 23:45:13 -0400
  • Accept-language: en-US
  • Acceptlanguage: en-US

Right, there is only one slot for the threadlocal.

So you start as who you want it to run as. Then if you need a root session,
you can call session.internal_getRootSession().

If you need to use the threadlocal for a root session temporarily, that is
the inverse of control... inside the block the static session is root, but
afterward it is what it used to be...

new GrouperSessionHandler() {

public Object callback(GrouperSession grouperSession)
throws GrouperSessionException {
return null;



-----Original Message-----

On Behalf Of Tom Zeller
Sent: Wednesday, April 14, 2010 11:41 PM
To: Chris Hyzer
Cc: Grouper Dev
Subject: Re: [grouper-dev] When to use GrouperSession.staticGrouperSession() ?

Right. I guess I was looking for a method like
GrouperSession.staticGrouperSession(Subject) which would return a
threadlocal session started by the given subject. A junit test wasn't
passing and I realized I started a threadlocal root session in the
test setup ... oops.

On Wed, Apr 14, 2010 at 9:41 PM, Chris Hyzer
> Well, the staticGrouperSession is not a traditional static, it's a
> threadlocal.  So when your thread starts one, then anywhere in the thread
> can use that with GrouperSession.staticGrouperSession()... we created that
> so we don't have to pass it around or store it somewhere, so might as well
> use it, right?
> Thanks,
> Chris
> -----Original Message-----
> From:
> [mailto:]
> On Behalf Of Tom Zeller
> Sent: Wednesday, April 14, 2010 5:42 PM
> To: Grouper Dev
> Subject: [grouper-dev] When to use GrouperSession.staticGrouperSession() ?
> Chris,
> Should the grouper DataConnectors for shibboleth use
> GrouperSession.staticGrouperSession() ? (No)
> Instead, they should call GrouperSession.start(Subject) and then store
> the GrouperSession as a class variable ? (Yes)
> It's OK for the stored GrouperSession class variable to be long-lived ?
> (Yes)
> Or should I start a new session every time I query Grouper for data ? (No)
> I started using GrouperSession.staticGrouperSession(), but then
> realized that this would use any grouper session stored in the jvm,
> which wasn't what I wanted, since the subjectId used to start the
> session needs to be configurable.
> Thanks!
> TomZ

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