Examples with HierarchicalTestBean com.vaadin.flow.data.bean.HierarchicalTestBean used on opensource projects

Example 6 with HierarchicalTestBean

use of com.vaadin.flow.data.bean.HierarchicalTestBean in project flow-components by vaadin.

the class TreeGridOrderColumnsPage method initializeDataProviders.

private void initializeDataProviders() {
    TreeData<HierarchicalTestBean> data = new TreeData<>();
    List<Integer> ints = Arrays.asList(0, 1, 2);
    ints.stream().forEach(index -> {
        HierarchicalTestBean bean = new HierarchicalTestBean(null, 0, index);
        data.addItem(null, bean);
        ints.stream().forEach(childIndex -> {
            HierarchicalTestBean childBean = new HierarchicalTestBean(bean.getId(), 1, childIndex);
            data.addItem(bean, childBean);
            ints.stream().forEach(grandChildIndex -> data.addItem(childBean, new HierarchicalTestBean(childBean.getId(), 2, grandChildIndex)));
        });
    });
}