c.complete();
    protected void doDSPost(Context c, HttpServletRequest request,            HttpServletResponse response) throws ServletException, IOException,            SQLException, AuthorizeException    {        // Find out if there's a group parameter        int groupID = UIUtil.getIntParameter(request, "group_id");        Group group = null;        if (groupID >= 0)        {            group = Group.find(c, groupID);        }        // group is set        if (group != null)        {            // is this user authorized to edit this group?            AuthorizeManager.authorizeAction(c, group, Constants.ADD);            boolean submit_edit = (request.getParameter("submit_edit") != null);            boolean submit_group_update = (request                    .getParameter("submit_group_update") != null);            boolean submit_group_delete = (request                    .getParameter("submit_group_delete") != null);            // just chosen a group to edit - get group and pass it to            // group-edit.jsp            if (submit_edit && !submit_group_update && !submit_group_delete)            {                request.setAttribute("group", group);                request.setAttribute("members", group.getMembers());                request.setAttribute("membergroups", group.getMemberGroups());                JSPManager.showJSP(request, response, "/tools/group-edit.jsp");            }            // update the members of the group            else if (submit_group_update)            {                // first off, did we change the group name?                String newName = request.getParameter("group_name");                if (!newName.equals(group.getName()))                {                    group.setName(newName);                    group.update();                }                int[] eperson_ids = UIUtil.getIntParameters(request,                        "eperson_id");                int[] group_ids = UIUtil.getIntParameters(request, "group_ids");                // now get members, and add new ones and remove missing ones                EPerson[] members = group.getMembers();                Group[] membergroups = group.getMemberGroups();                if (eperson_ids != null)                {                    // some epeople were listed, now make group's epeople match                    // given epeople                    Set memberSet = new HashSet();                    Set epersonIDSet = new HashSet();                    // add all members to a set                    for (int x = 0; x < members.length; x++)                    {                        Integer epersonID = new Integer(members[x].getID());                        memberSet.add(epersonID);                    }                    // now all eperson_ids are put in a set                    for (int x = 0; x < eperson_ids.length; x++)                    {                        epersonIDSet.add(new Integer(eperson_ids[x]));                    }                    // process eperson_ids, adding those to group not already                    // members                    Iterator i = epersonIDSet.iterator();                    while (i.hasNext())                    {                        Integer currentID = (Integer) i.next();                        if (!memberSet.contains(currentID))                        {                            group.addMember(EPerson.find(c, currentID                                    .intValue()));                        }                    }                    // process members, removing any that aren't in eperson_ids                    for (int x = 0; x < members.length; x++)                    {                        EPerson e = members[x];                        if (!epersonIDSet.contains(new Integer(e.getID())))                        {                            group.removeMember(e);                        }                    }                }                else                {                    // no members found (ids == null), remove them all!                    for (int y = 0; y < members.length; y++)                    {                        group.removeMember(members[y]);                    }                }                if (group_ids != null)                {                    // some groups were listed, now make group's member groups                    // match given group IDs                    Set memberSet = new HashSet();                    Set groupIDSet = new HashSet();                    // add all members to a set                    for (int x = 0; x < membergroups.length; x++)                    {                        Integer myID = new Integer(membergroups[x].getID());                        memberSet.add(myID);                    }                    // now all eperson_ids are put in a set                    for (int x = 0; x < group_ids.length; x++)                    {                        groupIDSet.add(new Integer(group_ids[x]));                    }                    // process group_ids, adding those to group not already                    // members                    Iterator i = groupIDSet.iterator();                    while (i.hasNext())                    {                        Integer currentID = (Integer) i.next();                        if (!memberSet.contains(currentID))                        {                            group                                    .addMember(Group.find(c, currentID                                            .intValue()));                        }                    }                    // process members, removing any that aren't in eperson_ids                    for (int x = 0; x < membergroups.length; x++)                    {                        Group g = membergroups[x];                        if (!groupIDSet.contains(new Integer(g.getID())))                        {                            group.removeMember(g);                        }                    }                }                else                {                    // no members found (ids == null), remove them all!                    for (int y = 0; y < membergroups.length; y++)                    {                        group.removeMember(membergroups[y]);                    }                }                group.update();                request.setAttribute("group", group);                request.setAttribute("members", group.getMembers());                request.setAttribute("membergroups", group.getMemberGroups());                JSPManager.showJSP(request, response, "/tools/group-edit.jsp");                c.complete();            }            else if (submit_group_delete)            {                // phony authorize, only admins can do this                AuthorizeManager.authorizeAction(c, group, Constants.WRITE);                // delete group, return to group-list.jsp                group.delete();                showMainPage(c, request, response);                c.complete();            }            else            {                // unknown action, show edit page                request.setAttribute("group", group);                request.setAttribute("members", group.getMembers());                request.setAttribute("membergroups", group.getMemberGroups());                JSPManager.showJSP(request, response, "/tools/group-edit.jsp");            }        }        else        // no group set        {            // want to add a group - create a blank one, and pass to            // group_edit.jsp            String button = UIUtil.getSubmitButton(request, "submit");            if (button.equals("submit_add"))            {                group = Group.create(c);                group.setName("new group" + group.getID());                group.update();                request.setAttribute("group", group);                request.setAttribute("members", group.getMembers());                request.setAttribute("membergroups", group.getMemberGroups());                JSPManager.showJSP(request, response, "/tools/group-edit.jsp");                c.complete();            }            else            {                // show the main page (select groups)                showMainPage(c, request, response);            }        }    }