managegroups.java

java 写的一个新闻发布系统

    /**
     * Display a confirmation form to remove a group
     *
     * @param request
     * @param response
     * @param session
     * @throws IOException
     * @throws ServletException
     */
    private void displayGroupRemove( HttpServletRequest  request,
                                     HttpServletResponse response,
                                     HttpSession         session )
    throws IOException, ServletException
    {
        String selectedGroup = request.getParameter("selectedGroup");
        if (selectedGroup == null) {
            groupMessage = "Please select a group in the select box";
            displayGroupList(request, response, session);
        }
        else {
            request.setAttribute("groupName", selectedGroup);

            request.setAttribute("jspSource", JSP_PATH + "/group_management/group_remove.jsp");
            request.setAttribute("directMenu", JSP_PATH + "/direct_menu.jsp");
            session.setAttribute("jahiaDisplayMessage", Jahia.COPYRIGHT);
            session.setAttribute("groupMessage", groupMessage);
            doRedirect(request, response, session, JSP_PATH + "/admin.jsp");
        }
    }

    /**
     * Remove a group from the jahia DB
     *
     * @param request
     * @param response
     * @param session
     * @throws IOException
     * @throws ServletException
     */
    private void processGroupRemove( HttpServletRequest   request,
                                     HttpServletResponse  response,
                                     HttpSession          session )
    throws IOException, ServletException
    {
        String groupName = (String) request.getParameter("groupName");
        JahiaGroup theGroup = (JahiaGroup)gMgr.lookupGroup(jahiaSite.getID(), groupName);

        groupMessage = "";
        Set groupMembers = getGroupMembers(groupName, jahiaSite.getID());
        Iterator it = groupMembers.iterator();
        while (it.hasNext()) {
            theGroup.removeMember((JahiaUser)it.next());
        }

        if (groupMessage.equals("")) {
            // delete membership...
            try {
                JahiaSiteGroupManagerService siteGroupManager = ServicesRegistry.getInstance().getJahiaSiteGroupManagerService();
                siteGroupManager.removeGroup(theGroup);
            } catch (Exception e) {
            }
            // delete group...
            if (!gMgr.deleteGroup(theGroup)) {
                groupMessage = "Cannot remove [" + groupName + "] group";
            } else {
                groupMessage = "Group [" + groupName + "] successfully removed";
            }
        }
        displayGroupList( request, response, session );
        groupMessage = "";
    }

     /**
      * Create a group
      * FIXME : This method has to be rechecked.
      *
      * @param session ??? FIXME : Has to be removed ?
      * @param name The group name
      * @return A reference to the newly created group.
      */
    private JahiaGroup createGroup(HttpSession session, String name)
    {
        // create the group...
        JahiaGroup theGroup = null;
        theGroup = gMgr.createGroup(jahiaSite.getID(), name , null);
        if (theGroup != null) {
            // create group membership...
            try {
                JahiaSiteGroupManagerService siteGroupManager =
                    ServicesRegistry.getInstance().getJahiaSiteGroupManagerService();
                siteGroupManager.addGroup(jahiaSite.getID(), theGroup);
            } catch (Exception e) { }
        }
        return theGroup;
    }

    // FIXME : Has this method really something to do here ?
     /**
      * Return the member vector of a given site and a given group.
      *
      * @param groupName
      * @param jahiaSite
      * @return  the member Set of a given site and a given group.
      */
    private Set getGroupMembers(String groupName, int jahiaSite) {

        JahiaGroup theGroup = (JahiaGroup)gMgr.lookupGroup(jahiaSite, groupName);
        Set groupMembers = new HashSet();
        if (theGroup != null) {
            Enumeration groupMembersEnum = theGroup.members();
            while (groupMembersEnum.hasMoreElements()) {
                Object member = (Object)groupMembersEnum.nextElement();
                // keep only members from this jahiaSite...
                if (member instanceof JahiaUser) {
                    // ugly hack because we can't test the site ID on an external
                    // user provider for the moment...
                    if (member instanceof JahiaDBUser) {
                        if (((JahiaUser)member).getSiteID() == jahiaSite) {
                            groupMembers.add((JahiaUser)member);
                        }
                    } else {
                        groupMembers.add((JahiaUser)member);
                    }
                } else {
                    if (((JahiaGroup)member).getSiteID() == jahiaSite) {
                        groupMembers.add((JahiaGroup)member);
                    }
                }
            }
        }
        return groupMembers;
    }

     /**
      * Recover membership and its site of a group.
      * FIXME : Has to be recheked.
      *
      * @param groupName the group name
      * @param jahiaSite a jahia site ID
      * @return the group member ship
      */
    private Vector getGroupMembership(String groupName, int jahiaSite)
    {
        JahiaGroup theGroup = (JahiaGroup)gMgr.lookupGroup(jahiaSite, groupName);
        Vector groupMembership = new Vector();
        if (theGroup != null) {
            Enumeration groupMembersEnum = theGroup.members();
            while (groupMembersEnum.hasMoreElements()) {
                Object obj = (Object)groupMembersEnum.nextElement();
                // keep only out member of this jahiaSite...
                if ((obj instanceof JahiaUser) && (((JahiaUser)obj).getSiteID() != jahiaSite)) {
                    JahiaUser grpMembers = (JahiaUser)obj;
                    groupMembership.add(grpMembers.getUsername()); // Member name
                    // Look for site name from membership
                    int memberSiteID = grpMembers.getSiteID();
                    if (memberSiteID == 0) {
                        groupMembership.add("jahia server");
                    } else {
                        try {
                            JahiaSitesService sitesManager =
                                ServicesRegistry.getInstance().getJahiaSitesService();
                            JahiaSite memberSite = sitesManager.getSite(memberSiteID);
                            if (memberSite != null) {
                                groupMembership.add(memberSite.getServerName());
                            } else {
                                groupMembership.add("unknow");
                            }
                        } catch (Exception e) {
                        }
                    }
                }
            }
        }
        return groupMembership;
    }

    /**
     * Add or remove members to a group.
     * FIXME : This method has to be rechecked !
     *
     * @param left a set of members to check
     * @param right a set of members to check
     * @param addRem the addMembers or removeMembers method to apply.
     * @param grp the object defining the previous method
     */
    private void addRemoveGroupMembers(HashSet left, HashSet right, Method addRem, JahiaGroup grp) {
        Iterator itRight = right.iterator();
        while (itRight.hasNext()) {
            JahiaUser elementRight = (JahiaUser)itRight.next();
            Iterator itLeft = left.iterator();
            while (itLeft.hasNext()) {
                JahiaUser elementLeft = (JahiaUser)itLeft.next();
                if (elementLeft.getUsername().equals(elementRight.getUsername())) {
                    elementRight = null;
                    break;
                }
            }
            if (elementRight != null) {
                try {
                    Object[] args = { elementRight };
                    addRem.invoke(grp, args);
                } catch (IllegalAccessException iae) {
                    JahiaConsole.printe(CLASS_NAME+".processUserEdit", iae);
                } catch (InvocationTargetException ite) {
                    JahiaConsole.printe(CLASS_NAME+".processUserEdit", ite);
                }
            }
        }
    }

    /**
     * Get the groups from a site a prepare them for display.
     *
     * @param searchResult
     * @return a formated array list of string.
     */
    private ArrayList getGroupListForDisplay(Vector searchResult) {

        ArrayList resultList = new ArrayList();
        Enumeration groupListEnum = searchResult.elements();
        while (groupListEnum.hasMoreElements()) {
            String groupKey = (String)groupListEnum.nextElement();
            JahiaGroup group = ServicesRegistry.getInstance().getJahiaGroupManagerService().lookupGroup(groupKey);
            String provider = JahiaString.adjustStringSize(group.getProviderName(), 6) + " ";
            // Construct a displayable groupname
            String grpname = JahiaString.adjustStringSize(group.getGroupname(), 15);
            // Find some group members for properties
            Enumeration grpMembers = group.members();
            String members = "(";
            while (grpMembers.hasMoreElements()) {
                Object obj = (Object)grpMembers.nextElement();
                if (obj instanceof JahiaUser) {
                    JahiaUser tmpUser = (JahiaUser)obj;
                    members += tmpUser.getUsername();
                } else {
                    JahiaGroup tmpGroup = (JahiaGroup)obj;
                    members += tmpGroup.getGroupname();
                }
                if (members.length() > 30) break;
                if (grpMembers.hasMoreElements()) members += ", ";
            }
            members += ")";
            members = JahiaString.adjustStringSize(members, 30);
            String result = provider + " " + grpname + " " + members;
            resultList.add(group.getGroupname());
            resultList.add(JahiaTools.replacePattern(result, " ", " "));
        }
        return resultList;
    }

    /**
     * Apply the HomePageTool object displaying a home page tool popup window.
     *
     * @param request
     * @param response
     * @param session
     * @throws Throwable
     */
    private void processHomePage(HttpServletRequest request,
                                 HttpServletResponse response,
                                 HttpSession session)
    throws Throwable
    {
        if (homePageTool == null) {
            homePageTool = new HomePageTool(request, response, session);
        } else {
            homePageTool.requestDispatcher(request, response, session);
        }
    }

    /**
     * Apply the GroupMembersTool object displaying the users search module.
     *
     * @param request
     * @param response
     * @param session
     * @throws Throwable
     */
    private void processGroupMembers(HttpServletRequest request,
                                     HttpServletResponse response,
                                     HttpSession session)
    throws Throwable
    {
        if (groupMembersTool == null) {
            groupMembersTool = new GroupMembersTool(request, response, session);
        } else {
            groupMembersTool.requestDispatcher(request, response, session);
        }
    }

}