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Re: [grouper-users] Information about deleted groups and users

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  • From: Kathryn Huxtable <>
  • To: Tom Barton <>, aragorn <>
  • Cc: <>
  • Subject: Re: [grouper-users] Information about deleted groups and users
  • Date: Tue, 24 Apr 2007 23:03:27 -0500

Basically, the idea was to reverse the time-space tradeoff made in the
program. It depends on how many groups and members you are likely to have.

I addressed the problem by changing the code to provision a relational
database instead.

More later, it's late.


On 4/24/07 8:40 PM, "Tom Barton"

> Grouper indeed does not have an incremental change notification
> capability at present, though that is the next substantial area for
> development in the roadmap.
> Ldappc can provision grouper groups to an ldap directory. One of its
> core capabilities is computing a "logical diff" to determine the
> incremental changes to be made in the target directory. However, its
> performance in doing so with regard to isMemberOf style of membership
> information has been found too slow in at least one large scale
> experiment. Kathryn Huxtable might comment on that, and on an idea for
> remedying that issue that arose in discussion at the signet-grouper
> combined working group meeting here at the Internet2 conference last Monday.
> I'm very open to ideas on how to extend grouper or associated
> applications like Ldappc to facilitate incremental provisioning of group
> changes. Seems like it's just about time to begin those design discussions.
> Tom
> aragorn wrote:
>> Hi,
>> I'd like to ask, why there is now way how to get information from
>> Grouper API about deleted groups or memberships? Do you have some
>> special purpose (performance, size of database, ...) to not implement
>> this functionality?
>> We need to propagate changes (CRUD of groups and memberships) made in
>> Grouper to other systems (Sun IDM). I have idea how to "simple" solve
>> this task. Just use another DB where will be archived all groups and
>> memberships and set of classes to update this DB from Grouper. Before I
>> start to implement this I'd like to know if you plan to add this
>> functionality to future releases of core Grouper API or if we can
>> contribute this "extension"?
>> -----
>> Josef Krupicka
>> Centre for Information Technology (CIV)
>> University of West Bohemia in Pilsen

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