Examples of java.security.acl.Group

java.security.acl.Group
This interface is used to represent a group of principals. (A principal represents an entity such as an individual user or a company).
Note that Group extends Principal. Thus, either a Principal or a Group can be passed as an argument to methods containing a Principal parameter. For example, you can add either a Principal or a Group to a Group object by calling the object's {@code addMember} method, passing it thePrincipal or Group. @author Satish Dharmaraj


   public Group asGroup()
   {
      try
      {
         Group gp = IdentityFactory.createGroup("Roles");
         gp.addMember(IdentityFactory.createPrincipal(role.getRoleName()));
         return gp;
      }
      catch (Exception e)
      {
         throw new RuntimeException(e);

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                for (Principal p : principals) {
                    if (!(p instanceof Group) && principal == null) {
                        principal = p;
                    }
                    if (p instanceof Group) {
                        Group g = Group.class.cast(p);
                        if (g.getName().equals(SecurityConstants.CALLER_PRINCIPAL_GROUP) && callerPrincipal == null) {
                            Enumeration<? extends Principal> e = g.members();
                            if (e.hasMoreElements())
                                callerPrincipal = e.nextElement();
                        }
                    }
                }

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    * principals security roles from the SecurityRolesAssociation
    * @return Group[] containing the sets of roles
    */
   protected Group[] getRoleSets() throws LoginException
   {
      Group group = new SimpleGroup("Roles");
      Iterator itRoleNames = getSecurityRoleNames().iterator();
      while (itRoleNames.hasNext())
      {
         String roleName = (String) itRoleNames.next();
         group.addMember(new SimplePrincipal(roleName));
      }


      return new Group[]{group};
   }

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         {
            String name = rs.getString(1);
            String groupName = rs.getString(2);
            if( groupName == null || groupName.length() == 0 )
               groupName = "Roles";
            Group group = (Group) setsMap.get(groupName);
            if( group == null )
            {
               group = new SimpleGroup(groupName);
               setsMap.put(groupName, group);
            }


            try
            {
               Principal p = aslm.createIdentity(name);
               if( trace )
                  log.trace("Assign user to role " + name);
               group.addMember(p);
            }
            catch(Exception e)
            {
               log.debug("Failed to create principal: "+name, e);
            }

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    */
    public boolean isMember(Principal member)
    {
        if( rolesStack.size() == 0 )
            return false;
        Group activeGroup = (Group) rolesStack.getFirst();
        boolean isMember = activeGroup.isMember(member);
        return isMember;
    }

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        IndexEnumeration()
        {
            if( rolesStack.size() > 0 )
            {
                Group grp = (Group) rolesStack.get(0);
                iter = grp.members();
            }
        }

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      for(int n = 0; n < length; n ++)
      {
         Principal p = principals[n];
         if( p instanceof Group )
         {
            Group g = (Group) p;
            Enumeration iter = g.members();
            while( iter.hasMoreElements() )
            {
               p = (Principal) iter.nextElement();
               String name = p.getName();
               princpalNames.add(name);

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            while( isMember == false && iter.hasNext() )
            {
                Object next = iter.next();
                if( next instanceof Group )
                {
                    Group group = (Group) next;
                    isMember = group.isMember(member);
                }
            }
        }
        return isMember;
    }

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      Principal identity = getIdentity();
      principals.add(identity);
      Group[] roleSets = getRoleSets();
      for(int g = 0; g < roleSets.length; g ++)
      {
         Group group = roleSets[g];
         String name = group.getName();
         Group subjectGroup = createGroup(name, principals);
         if( subjectGroup instanceof NestableGroup )
         {
            /* A NestableGroup only allows Groups to be added to it so we
            need to add a SimpleGroup to subjectRoles to contain the roles
            */
            SimpleGroup tmp = new SimpleGroup("Roles");
            subjectGroup.addMember(tmp);
            subjectGroup = tmp;
         }
         // Copy the group members to the Subject group
         Enumeration members = group.members();
         while( members.hasMoreElements() )
         {
            Principal role = (Principal) members.nextElement();
            subjectGroup.addMember(role);
         }
      }
      return true;
   }

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    method to locate the 'Roles' group or create additional types of groups.
    @return A named Group from the principals set.
    */
   protected Group createGroup(String name, Set principals)
   {
      Group roles = null;
      Iterator iter = principals.iterator();
      while( iter.hasNext() )
      {
         Object next = iter.next();
         if( (next instanceof Group) == false )
            continue;
         Group grp = (Group) next;
         if( grp.getName().equals(name) )
         {
            roles = grp;
            break;
         }
      }

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