[jira] [Created] (OAK-4003) Add support for Group-Membership actions

["angela (JIRA)" <ji...@apache.org>]

angela created OAK-4003:
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             Summary: Add support for Group-Membership actions
                 Key: OAK-4003
                 URL: https://issues.apache.org/jira/browse/OAK-4003
             Project: Jackrabbit Oak
          Issue Type: New Feature
          Components: core
            Reporter: angela
            Assignee: Dominique Jäggi
             Fix For: 1.6


[~djaeggi], as discussed today it would be cool to provide an extension for the user/group actions that allowed to hook in additional processing/verification upon update of group membership.

initial thoughts to be discussed and verified for feasibilty: 

- create {{GroupAction}} interface extending {{AuthorizableAction}} (to not blow up the original interface with operations that only affect groups)
- add 2 methods for addMember(s) and removeMember(s) each to cover both the add/removal by {{Authorizable}} and by multiple {{memberIds}}

The actions should be called _after_ having successfully processed the modification and (in case on manipulation by ID) should only report those members that have been added/removed (see API contract of membership-update by ids).

Methods could e.g. look something like
{code}
    void onMemberAdded(Group group, Authorizable member, Root root, NamePathMapper namePathMapper) throws RepositoryException;
    
    void onMembersAdded(Group group, Iterable<String> memberIds, Root root, NamePathMapper namePathMapper) throws RepositoryException;

   void onMemberRemoved(Group group, Authorizable member, Root root, NamePathMapper namePathMapper) throws RepositoryException;
    
    void onMembersRemoved(Group group, Iterable<String> memberIds, Root root, NamePathMapper namePathMapper) throws RepositoryException;
{code}



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