这个例子介绍了动态EditDataGrid的使用方法，该示例来源自 bpdemos

<w:form>
    <w:editDataGrid id="grid" paged="true" rows="10" toolBarPosition="top" height="400" width="800">
        <w:pagingToolbar>
            <w:separator />
            <w:menu label="数据维护">
                <w:commandMenuItem label="增加" image="../images/new.gif"
                    action="#{datarepresent.grid.dynamic.editableBean.insert}" />
                <w:commandMenuItem label="增加(预填数据)" image="../images/new.gif"
                    action="#{datarepresent.grid.dynamic.editableBean.insertWithData}" />
                <w:commandMenuItem label="删除" image="../images/delete.gif"
                    action="#{datarepresent.grid.dynamic.editableBean.remove}" />
                <w:commandMenuItem label="保存" image="../images/save.gif"
                    action="#{datarepresent.grid.dynamic.editableBean.save}" />
            </w:menu>
            <w:separator />
            <w:button id="add" value="增加" image="../images/new.gif" />
            <w:button id="addWithData" value="增加(预填数据)" image="../images/new.gif" />
            <w:button id="remove" value="删除" image="../images/delete.gif" />
            <w:button id="save" value="保存" image="../images/save.gif" />
        </w:pagingToolbar>
    </w:editDataGrid>
</w:form>

Managed Bean代码：

@ManagedBean(name = "datarepresent.grid.dynamic.editableBean", scope = ManagedBeanScope.REQUEST)
public class EditableBean {
    @Bind(id = "grid")
    private List<Company> getCompanys() {
        return CompanyService.findAll();
    }

    @Bind(id = "grid", attribute = "viewProvider")
    private GridViewProvider viewProvider = new GridViewProvider() {
        public GridColumnModel getColumnModel(Object input) {
            return DynamicGridBeanHelper.createCompanyColumnModel();
        }

        public GridHeaderModel getHeaderModel(Object input) {
            return DynamicGridBeanHelper.createCompanyHeaderModel();
        }

        public GridSelectionModel getSelectionModel(Object input) {
            return new CheckboxSelectionModel();
        }
    };

    @Bind(id = "grid", attribute = "rowDataProvider")
    private GridRowDataProvider rowProvider = DynamicGridBeanHelper.getCompanyRowProvider();

    CompanyService companyService = new CompanyService();

    @Bind(id = "grid")
    private UIEditDataGrid grid;

    @Bind(id = "grid", attribute = "addedData")
    private Object addedData;
    @Bind(id = "grid", attribute = "modifiedData")
    private Object modifiedData;
    @Bind(id = "grid", attribute = "removedData")
    private Object removedData;
    @Bind(id = "grid", attribute = "bindBean")
    private Class bindBean = Company.class;
    
    @BeforeRender
    public void beforeRender(boolean isPostBack) {
        if (!isPostBack) {
            GridColumnModel model = grid.getColumnModel();
            model.getColumn(1).setCellEditor(createCellEditor(UITextField.COMPONENT_TYPE));
            model.getColumn(2).setCellEditor(createCellEditor(UITextField.COMPONENT_TYPE));
            model.getColumn(3).setCellEditor(createCellEditor(UITextField.COMPONENT_TYPE));
            model.getColumn(4).setCellEditor(createCellEditor(UITextField.COMPONENT_TYPE));
            model.getColumn(5).setCellEditor(createCellEditor(UITextField.COMPONENT_TYPE));
        }
    }

    private CellEditor createCellEditor(String componentType) {
        CellEditorAdapter adapter = CellEditorAdapter.getInstance();
        CellEditorFactory fac = adapter.getCellEditorFactory(componentType);
        if (fac instanceof UITextField) {
            ((UITextField) fac).setAllowBlank(false);
        }
        return fac.getCellEditor();
    }

    @Action(id = "add")
    public void insert() {
        grid.insertRow(0);
    }

    @Action(id = "addWithData")
    public void insertWithData() {
        grid.insertRow(0, new Company("4","Microsoft","Windows, Office","天河软件园","http://www.microsoft.com","800 810 1818",""));
    }

    @Action(id = "remove")
    public void remove() {
        grid.remove();
    }

    @Action(id = "save")
    public void save() {
        try {
            if (addedData != null) {
                add((Company[]) addedData);
            }
            if (modifiedData != null) {
                update((Company[]) modifiedData);
            }
            if (removedData != null) {
                remove((Company[]) removedData);
            }
            grid.commit();
            grid.reload();
        } catch (Exception e) {
            throw new FacesException(e);
        }
    }

    private void remove(Company[] companys) {
        for (Company company : companys) {
            companyService.remove(company);
        }
    }

    private void update(Company[] companys) {
        for (Company company : companys) {
            companyService.update(company);
        }
    }

    private void add(Company[] companys) {
        for (Company company : companys) {
            company.setId(UUID.randomUUID().toString());
            companyService.add(company);
        }
    }
}