從數據庫生成Primefaces MenuModel

Question

我想問如何使用遞歸函數從數據庫生成menumodel。 我已經讓這個班，但它不工作。請幫幫我，我已經找到並嘗試了一個星期.thanks

public class MenuDAOImpl extends ManagerBase<MenuMaster> implements MenuDAO { 

    private List<MenuMaster> list; 
    private List<MenuData> datas; 

    @Override 
    public MenuModel getMenu() { 
     MenuModel model = new DefaultMenuModel(); 
     String[] orders = new String[]{"id"}; 
     try { 
      list = getBySQLQuery("PARENT_MENU_ID=0", orders, 1000); 
      for (MenuMaster menuMaster : list) { 
       menuChild(menuMaster); 
      } 
     } catch (Exception e) { 
     } 
     return model; 
     // throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates. 
    } 

    private List<MenuData> menuChild(MenuMaster master) { 
     List<MenuData> listChild = new ArrayList<MenuData>(); 
     String[] orders = new String[]{"id"}; 
     try { 
      MenuData data = new MenuData(); 
      data.mm = master; 
      data.mms = getBySQLQuery("PARENT_MENU_ID=" + master.getParentMenuId(), orders, 1000); 
      listChild.add(data); 
     } catch (Exception e) { 
     } 
     return listChild; 
    } 

    public class MenuData { 

     private MenuMaster mm; 
     private List<MenuMaster> mms; 

     public MenuData() { 
     } 

     public MenuMaster getMm() { 
      return mm; 
     } 

     public void setMm(MenuMaster mm) { 
      this.mm = mm; 
     } 

     public List<MenuMaster> getMms() { 
      return mms; 
     } 

     public void setMms(List<MenuMaster> mms) { 
      this.mms = mms; 
     } 
    } 
} 

這是我的數據庫表（抱歉，我不能上傳圖片）

ID | MENU_NAME | DISPLAY_NAME |網址| PARENT_MENU_ID |
1 |員工|員工| /employee.xhtml | 0 |
2 | employeemenu |員工| /employee.xhtml | 1 |
3 | utils |實用程序| | 0 |
7 | asdf | asdf | | 6 |
6 | utilsmenu |測試| | 3 |
5 | utilsdata |管理員配置| asdf | 3 |
4 |菜單|菜單編輯器| /utility/menu.xhtml | 3 |

Answer 1

下面是一些代碼，我已經躺在附近，我通過附加的子菜單和的菜單項，以他的getChildren（）屬性創建menumodel

private MenuModel model; 

public MenuModel getModel() { 

    if(model != null) return model; 

    model = new DefaultMenuModel(); 
    addDynamicMenus(); 

    return model; 
} 

private void addDynamicMenus(){ 

    if(modules == null){ 
     modules = service.getModulesByUserLogin(loginBean.getUsername()); 
    } 

    Submenu currfather = null; 

    for(SpFeModuleForUser s : modules){ 

     if(currfather == null || (!currfather.getId().equals("menu_" + s.getModuleID()))){ 
      currfather = new Submenu(); 
       currfather.setLabel(Modules.getSingleton().getString(s.getModuleName())); 
      currfather.setId("menu_"+s.getModuleID()); 
      model.addSubmenu(currfather); 
     } 

     MenuItem mi = new MenuItem(); 

     mi.setValue(Modules.getSingleton().getString(s.getNAME())); 
     mi.setId("_" + s.getKey()); 
     mi.setTarget("_self"); 
     mi.setTitle(Modules.getSingleton().getString(s.getNAME() + "_Description")); 
     mi.setAjax(false); 
     mi.setUrl(url); 
     // Add parameters 
     UIParameter param = new UIParameter(); 
     param.setName("moduleid"); 
     param.setValue(s.getKey()); 
     mi.getChildren().add(param); 

     mi.setProcess("@all"); 
     currfather.getChildren().add(mi); 
    } 
}