managegroups.java

java 写的一个新闻发布系统

    {
        String groupName = (String)request.getParameter("groupName").trim();
        if (groupName.length() == 0) {
            groupMessage = "Please specify a group name";
            return false;
        }
        // Does the introduced groupName contain some errors ?
        if (groupName.length() == 0) {
            groupMessage = "Please specify a group name";
            return false;
        }
        // The following test is really disputable because we should can enter
        // as well accentueted char and any internationalized char.
        else if (!JahiaTools.isAlphaValid(groupName)) {
            groupMessage = "Use only letters, digits or underscores in group name";
            return false;
        } else if (gMgr.groupExists (jahiaSite.getID(), groupName)) {
            groupMessage = "Group [" + groupName + "] already exists in this jahiaSite";
            return false;
        }
        // try to create the new group...
        JahiaGroup grp = createGroup(session, groupName);
        if (grp == null) {
            groupMessage = "Unable to create group " + groupName;
            return false;
        } else {
            groupMessage = "Group [" + groupName + "] successfully created.";
        }
        // Lookup for home page settings and set it.
        if (request.getParameter("setHomePage") != null) {
            Integer homePageIDInt = (Integer)session.getAttribute("homePageID");
            if (homePageIDInt != null) {
                int homePageID = homePageIDInt.intValue();
                JahiaConsole.println(CLASS_NAME+".processGroupCreate", "Process Home Page ID : " + homePageID);
                grp.setHomepageID(homePageID);
            }
        }
        return true;
    }

    /**
     * Display group members and home page
     *
     * @param request
     * @param response
     * @param session
     * @throws IOException
     * @throws ServletException
     * @throws JahiaException
     */
    private void displayGroupEdit(HttpServletRequest request,
                                  HttpServletResponse response,
                                  HttpSession session)
    throws IOException, ServletException, JahiaException
    {
        JahiaConsole.println(CLASS_NAME+".displayGroupEdit", "Started");
        String groupToEdit = request.getParameter("selectedGroup");
        if (groupToEdit == null) { // Get the last group if none was selected.
            groupToEdit = (String)session.getAttribute("selectedGroup");
        }
        if (groupToEdit == null || "null".equals(groupToEdit)) {
            groupMessage = "Please select a group in the select box";
            displayGroupList(request, response, session);
            return;
        }
        // Consider actual selected group as the last one and store it in session.
        session.setAttribute("selectedGroup", groupToEdit);
        JahiaGroup theGroup = (JahiaGroup)gMgr.lookupGroup(jahiaSite.getID(), groupToEdit);
        groupMembers = (HashSet)getGroupMembers(groupToEdit, jahiaSite.getID());
        // display the edit form with initial values
        // FIXME : the method name ('getUserListForDisplay') is disputable here.
        request.setAttribute("groupMembers", usersViewHelper.getUserListForDisplay(groupMembers));
        // Get the home page
        if (session.getAttribute("homePageLabel") == null) {
            int homePageID = theGroup.getHomepageID();
            if (homePageID != -1) {
                // FIXME : This exception should arrive when the page is
                // erased. In this case it is the rule of the page remover
                // to ensure that no references to pages exist before
                // removing.
                /** @todo remove this exception catching when a correct page
                   remover were implemented. */
                try {
                    session.setAttribute("homePageID", new Integer(homePageID));
                    session.setAttribute("homePageLabel", JahiaPageBaseService.
                        getInstance().lookupPageWhitoutTemplates(homePageID).getTitle());
                } catch (JahiaException je) {
                    JahiaConsole.printe(CLASS_NAME+".displayUserEdit", je);
                    groupMessage = "Jahia encounters a problem with the home page." +
                                   "Was this page removed ?";
                    session.setAttribute("homePageLabel", "Disapeared !");
                }
            } else {
                session.setAttribute("homePageLabel", "none");
            }
        }
        request.setAttribute("jspSource", JSP_PATH + "/group_management/group_edit.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");
        groupMessage = "";
    }

    /**
     * Process modifications to the group previously edited.
     *
     * @param request
     * @param response
     * @param session
     * @throws IOException
     * @throws ServletException
     * @throws JahiaException
     */
    private void processGroupEdit(HttpServletRequest request,
                                  HttpServletResponse response,
                                  HttpSession session)
    throws IOException, ServletException, JahiaException
    {
        JahiaConsole.println(CLASS_NAME+".processGroupEdit", "Started");
        String groupName = (String)request.getParameter("groupName");
        JahiaGroup grp = gMgr.lookupGroup(jahiaSite.getID(), groupName);

        // Lookup for home page settings and set it.
        Integer homePageIDInt = (Integer)session.getAttribute("homePageID");
        if (homePageIDInt != null) {
            int homePageID = homePageIDInt.intValue();
            if (homePageID != -1) {
                JahiaConsole.println(CLASS_NAME+".processUserEdit", "Process Home Page ID : " + homePageID);
                grp.setHomepageID(homePageID);
            } else {
                grp.removeProperty("group_homepage");
            }
        }

        // let's recuperate the members of the group from the selection box
        String[] newMembersList = (String[])request.getParameterValues("selectMember");
        // convert to HashSet
        HashSet candidateMembers = new HashSet();
        if (newMembersList != null) {
            for (int i = 0; i < newMembersList.length; i++) {
                // remove identifier type ("u " or "g " and provider) for future use.
                JahiaUser usr = (JahiaUser)uMgr.lookupUser(jahiaSite.getID(), newMembersList[i].substring(10));
                candidateMembers.add(usr);
            }
        }

        // Update group members
        if (candidateMembers.size() > 0) {
            try { // FIXME : Is here a way to optmize these pointer to method ?
            // Is there any new members to the original groupMembers
            addRemoveGroupMembers(groupMembers, candidateMembers,
                JahiaGroup.class.getMethod("addMember", new Class[] {Principal.class}), grp);
            // Is there any removed members from the original groupMembers
            addRemoveGroupMembers(candidateMembers, groupMembers,
                JahiaGroup.class.getMethod("removeMember", new Class[] {Principal.class}), grp);
            } catch (NoSuchMethodException nsme) {
                JahiaConsole.printe(CLASS_NAME+".processUserEdit", nsme);
            }
        } else {
            // No member in the select box, all members have to be removed
            Iterator it = groupMembers.iterator();
            while (it.hasNext()) {
                grp.removeMember((JahiaUser)it.next());
            }
        }
        groupMessage = "Group [" + groupName + "] successfully updated.";
    }

    /**
     * Display group members defining from other sites
     *
     * @param request
     * @param response
     * @param session
     * @throws IOException
     * @throws ServletException
     */
    private void displayGroupMembership( 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);
            Vector groupMembership = getGroupMembership(selectedGroup, jahiaSite.getID());
            request.setAttribute("groupMembership", groupMembership);

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

    /**
     * Display the form permitting to copy the selected group.
     *
     * @param request
     * @param response
     * @param session
     * @throws IOException
     * @throws ServletException
     */
    private void displayGroupCopy( HttpServletRequest   request,
                                   HttpServletResponse  response,
                                   HttpSession          session )
    throws IOException, ServletException
    {
        JahiaConsole.println(CLASS_NAME+".displayGroupCopy", "Started");
        request.setAttribute("newGroup", JahiaTools.nnString(request.getParameter("newGroup")));
        String selectedGroup = request.getParameter("selectedGroup");
        if (selectedGroup == null) { // Get the last group if none was selected.
            selectedGroup = (String)session.getAttribute("selectedGroup");
        }
        if (selectedGroup == null || "null".equals(selectedGroup)) {
            groupMessage = "Please select a group in the select box";
            displayGroupList(request, response, session);
            return;
        }
        // Consider actual selected group as the last one and store it in session.
        session.setAttribute("selectedGroup", selectedGroup);
        session.setAttribute("groupMessage", groupMessage);

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

    /**
     * Make a copy of a group.
     *
     * @param request
     * @param response
     * @param session
     * @return true if group successfully copied.
     * @throws IOException
     * @throws ServletException
     */
    private boolean processGroupCopy(HttpServletRequest request,
                                     HttpServletResponse response,
                                     HttpSession session)
    throws IOException, ServletException
    {
        String groupName = (String)request.getParameter("newGroup");
        String sourceGroupName = (String)session.getAttribute("selectedGroup");
        // Does the introduced groupName contain some errors ?
        if (groupName.length() == 0) {
            groupMessage = "Please specify a group name";
            return false;
        }
        // The following test is really disputable because we should can enter
        // as well accentueted char and any internationalized char.
        else if (!JahiaTools.isAlphaValid(groupName)) {
            groupMessage = "Use only letters, digits or underscores in group name";
            return false;
        }
        else if (gMgr.groupExists (jahiaSite.getID(), groupName)) {
            groupMessage = "Group [" + groupName + "] already exists in this site";
            return false;
        }

        // Try to create the new group
        if (createGroup(session, groupName) == null) {
            groupMessage = "Unable to create group " + groupName;
            return false;
        }
        else {
            JahiaGroup theNewGroup = gMgr.lookupGroup(jahiaSite.getID(), groupName);
            groupMessage = "Group [" + groupName + "] successfully created.";
            Set sourceGroupMembers = getGroupMembers(sourceGroupName, jahiaSite.getID());
            Iterator it = sourceGroupMembers.iterator();
            while (it.hasNext()) {
                theNewGroup.addMember((JahiaUser)it.next());
            }
            // Home page copy
            JahiaGroup sourceGroup = gMgr.lookupGroup(jahiaSite.getID(), sourceGroupName);
            int homePageID = sourceGroup.getHomepageID();
            if (homePageID != -1) {
                theNewGroup.setHomepageID(homePageID);
            }
        }
        return true;
    }