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[grouper-dev] Find all memberships by attribute

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  • From: Gagné Sébastien <>
  • To: <>
  • Subject: [grouper-dev] Find all memberships by attribute
  • Date: Wed, 27 Jun 2012 11:28:24 -0400


Using the Grouper API, I was wondering if a  « find all membership based on an attribute » helper method existed somewhere ? Similar to the GroupFinder.findAllByAttribute() but in MembershipFinder where it would return all the membership where attribute X is assigned to it (no matter which value is assigned). I think a SQL/Hibernate query might do the job, but maybe it could be better supported.


What would happen if I’m using an attribute without a value (as in a flag, where I will act differently if that attribute is assigned to a membership but where I don’t care if it has a value) ? I see that the value is mandatory in the GroupFinder, but I was able in the Lite UI to create an attribute that requires no value. I recall reading about two types of attributes (as in the old attributes are used for the SQL Loader and the new attributes are used in the LDAP Loader). I see two set of tables in the DB Attributes and Attribute_[assign|def| etc]. I think GroupFinder.findAllByAttribute is using the old Attributes.


How will this evolve ? Will the old attributes be phased out ? What happens to those helper methods ?





Sébastien Gagné,     | Analyste en informatique

514-343-6111 x33844  | Université de Montréal,

                     | Pavillon Roger-Gaudry, local X-100-11


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