gxt中的寻呼网格

Question

使用GXT 2.1.1开发寻呼网格，我使用hibernate从数据库表中检索值。我的代码是

public class ExampleSampleTrip extends Composite 
{ 

    final GreetingServiceAsync service = GWT.create(GreetingService.class); 


    static class BeanModel implements ModelData 
    { 

     @Override 
     public <X> X get(String property) 
     { 
      // TODO Auto-generated method stub 
      return null; 
     } 

     @Override 
     public Map<String, Object> getProperties() 
     { 
      // TODO Auto-generated method stub 
      return null; 
     } 

     @Override 
     public Collection<String> getPropertyNames() 
     { 
      // TODO Auto-generated method stub 
      return null; 
     } 

     @Override 
     public <X> X remove(String property) 
     { 
      // TODO Auto-generated method stub 
      return null; 
     } 

     @Override 
     public <X> X set(String property, X value) 
     { 
      // TODO Auto-generated method stub 
      return null; 
     } 

    } 

    List<ColumnConfig>       configs  = null; 
    Grid<BeanModel>     grid   = null; 
    ContentPanel        gridPanel  = null; 

    // loader 
    PagingLoader<PagingLoadResult<ModelData>> loader  = null; 
    PagingToolBar        pagingToolBar = null; 
    ListStore<BeanModel>    store   = null; 

    public ExampleSampleTrip() 
    { 
     initComponents(); 
    } 

    public List<ColumnConfig> getColumns() 
    { 
     if (configs == null) 
     { 
      configs = new ArrayList<ColumnConfig>(); 

       ColumnConfig column = new ColumnConfig(); 

       column.setId("vehicle"); 
       column.setHeader("Vehicle"); 
       column.setWidth(100); 
       configs.add(column); 

       column = new ColumnConfig(); 
       column.setId("orgin"); 
       column.setHeader("Orgin"); 
       column.setWidth(100); 
       configs.add(column); 

       column = new ColumnConfig(); 
       column.setId("destination"); 
       column.setHeader("Destination"); 
       column.setWidth(100); 
       configs.add(column); 

       column = new ColumnConfig(); 
       column.setId("route"); 
       column.setHeader("Route"); 
       column.setWidth(100); 
       configs.add(column); 

       column = new ColumnConfig(); 
       column.setId("status"); 
       column.setHeader("Status"); 
       column.setWidth(100); 
       configs.add(column); 

       column = new ColumnConfig(); 
       column.setId("currentlocation"); 
       column.setHeader("Current Location"); 
       column.setWidth(100); 
       configs.add(column); 

       ColumnModel cm = new ColumnModel(configs); 

     } 
     return configs; 
    } 

    public Grid<BeanModel> getGrid() 
    { 
     if (grid == null) 
     { 
      grid = new Grid<BeanModel>(getStore(), new ColumnModel(getColumns()));   
      grid.addListener(Events.Attach, new Listener<GridEvent<BeanModel>>() { 
       public void handleEvent(GridEvent<BeanModel> be) 
       { 
        PagingLoadConfig config = new BasePagingLoadConfig();     
        config.setLimit(50); 
        getLoader().load(config);   
       } 
      }); 

      grid.setBorders(true); 

     } 
     return grid; 
    } 

    public ContentPanel getGridPanel() 
    { 
     if (gridPanel == null) 
     { 
      gridPanel = new ContentPanel(); 
      gridPanel.setFrame(true); 

      gridPanel.setHeading("Paging Grid"); 
      gridPanel.setLayout(new FitLayout()); 
      gridPanel.add(getGrid()); 
      gridPanel.setSize(600, 350); 
      gridPanel.setBottomComponent(getPagingToolBar()); 
     } 
     return gridPanel; 
    } 

    public PagingLoader<PagingLoadResult<ModelData>> getLoader() 
    { 
     if (loader == null) 
     { 
      RpcProxy<List<Vehicle>> proxy=new RpcProxy<List<Vehicle>>(){ 

       @Override 
       protected void load(Object loadConfig, 
         AsyncCallback<List<Vehicle>> callback) { 

        service.getVehicles(callback); 

       } 

      }; 

      loader = new BasePagingLoader<PagingLoadResult<ModelData>>(proxy,new BeanModelReader()); 
      loader.setRemoteSort(true); 
      loader.load(); 
     } 
     return loader; 
    } 

    public PagingToolBar getPagingToolBar() 
    { 
     if (pagingToolBar == null) 
     { 
      pagingToolBar = new PagingToolBar(50); 
      pagingToolBar.bind(getLoader()); 
     } 
     return pagingToolBar; 
    } 

    public ListStore<BeanModel> getStore() 
    { 
     if (store == null) 
     { 
      store = new ListStore<BeanModel>(getLoader());  
     } 
     return store; 
    } 

    private void initComponents() 
    { 
     initWidget(getGridPanel()); 
    } 

} 

它只显示网格，它不显示值。

我实现文件

try { 
    // This step will read hibernate.cfg.xml and prepare hibernate for 
    // use 

    SessionFactory sessionFactory = new Configuration().configure() 
       .buildSessionFactory(); 
    System.out.println("Within select"); 
    session = sessionFactory.openSession(); 
    List dataList = session.createQuery(" from Vehicle").list(); 

    dataListArray = new ArrayList<Vehicle>(dataList.size()); 
    for (int i = 0; i < dataList.size(); i++) { 
     Vehicle datalst = (Vehicle) dataList.get(i); 
     dataListArray.add(datalst); 
    } 
    //cutomerList.add((Customer) dataList); 
    System.out.println("size---->" + dataListArray.size()); 

    return dataListArray; 

} catch (Exception e) { 
    System.out.println(e.getMessage()); 
} finally { 
    session.flush(); 
    session.close(); 
} 

Answer 1

忽略我，如果我是无知在这里，但什么是静态类BeanModel来完完全全的呢？

它实现了ModelData，但实现是空的。 如果这是您的Grid正在使用的BeanModel，那么您的网格将无法访问数据。 如果情况确实如此，那么您的BeanModel会扩展ModelData。

或者你是使用BeanModelMarker接口和@BEAN注解的车辆Bean？

我希望我没有误解你的情况。