Question

我通过以下方式创建nattable。但我只能通过我的Student课程中的getter和setter访问单元格。我怎么能访问单元格？我应该创建自己的BodyDataProvider还是使用IDataProvider？如果是真的，有人可以提供一些实施此类提供者的例子吗？

    final ColumnGroupModel columnGroupModel = new ColumnGroupModel();
    ColumnHeaderLayer columnHeaderLayer;
    String[] propertyNames = { "name", "groupNumber", "examName", "examMark" };

    Map<String, String> propertyToLabelMap = new HashMap<String, String>();
    propertyToLabelMap.put("name", "Full Name");
    propertyToLabelMap.put("groupNumber", "Group");
    propertyToLabelMap.put("examName", "Name");
    propertyToLabelMap.put("examMark", "Mark");

    DefaultBodyDataProvider<Student> bodyDataProvider = new DefaultBodyDataProvider<Student>(students,
            propertyNames);

    ColumnGroupBodyLayerStack bodyLayer = new ColumnGroupBodyLayerStack(new DataLayer(bodyDataProvider),
            columnGroupModel);

    DefaultColumnHeaderDataProvider defaultColumnHeaderDataProvider = new DefaultColumnHeaderDataProvider(
            propertyNames, propertyToLabelMap);
    DefaultColumnHeaderDataLayer columnHeaderDataLayer = new DefaultColumnHeaderDataLayer(
            defaultColumnHeaderDataProvider);
    columnHeaderLayer = new ColumnHeaderLayer(columnHeaderDataLayer, bodyLayer, bodyLayer.getSelectionLayer());
    ColumnGroupHeaderLayer columnGroupHeaderLayer = new ColumnGroupHeaderLayer(columnHeaderLayer,
            bodyLayer.getSelectionLayer(), columnGroupModel);

    columnGroupHeaderLayer.addColumnsIndexesToGroup("Exams", 2, 3);
    columnGroupHeaderLayer.setGroupUnbreakable(2);

    final DefaultRowHeaderDataProvider rowHeaderDataProvider = new DefaultRowHeaderDataProvider(bodyDataProvider);
    DefaultRowHeaderDataLayer rowHeaderDataLayer = new DefaultRowHeaderDataLayer(rowHeaderDataProvider);
    ILayer rowHeaderLayer = new RowHeaderLayer(rowHeaderDataLayer, bodyLayer, bodyLayer.getSelectionLayer());

    final DefaultCornerDataProvider cornerDataProvider = new DefaultCornerDataProvider(
            defaultColumnHeaderDataProvider, rowHeaderDataProvider);
    DataLayer cornerDataLayer = new DataLayer(cornerDataProvider);
    ILayer cornerLayer = new CornerLayer(cornerDataLayer, rowHeaderLayer, columnGroupHeaderLayer);

    GridLayer gridLayer = new GridLayer(bodyLayer, columnGroupHeaderLayer, rowHeaderLayer, cornerLayer);

    NatTable table = new NatTable(shell, gridLayer, true);

Answer 1

正如您在上一个问题How do I fix NullPointerException and putting data into NatTable中所回答的那样，NatTable Getting Started Tutorial中对此进行了解释。

如果您需要一些示例代码，请尝试NatTable Examples Application

从了解上一个问题开始，您的数据结构在表中不起作用，因为您有嵌套对象，其中子对象存储在数组中。所以这更像是一棵树，而不是一张桌子。

自定义DataProvider Nattable

1 个答案: