Add menu entries for employee application.

Our module creates Employees,Departments,Projects menubar entries. 

        private void registerMenu(AppEntryPoint appEntryPoint, Module module) {
                MenuBarBuilder menuBarBuilder = PicoHelper.getMandatoryComponent(module.getContainer(), MenuBarBuilder.class);
                menuBarBuilder.registerMenuBuilder(new EmployeesMenuDefinitionBuilder());
                menuBarBuilder.registerMenuBuilder(new DepartmentsMenuDefinitionBuilder());
                menuBarBuilder.registerMenuBuilder(new ProjectsMenuDefinitionBuilder());
        }

We will show how to implement Department menu entry. Very simply on menu activation, we will show DepartmentsDBListViewProviderImpl view provider.

public class DepartmentsMenuDefinitionBuilder implements MenuDefinitionBuilder {

        public MenuDefinition buildMenuDefinition(UserSession sesion) {
                MenuDefinition departmentsMenu = new MenuDefinition(
                                EmployessMenuConstants.DEPARTMENTS_MENU_ID,
                                MenuConstants.MAIN_MENU_LOC_NODE_PATH);

                Command showDepartmentsCmd = ShowViewProviderCommand.showListProvider(
                                new ViewProviderDef(ViewProviderKind.ListViewProvider,
                                                DepartmentsDBListViewProviderImpl.class,
                                                "dep.departments"));
                MenuItemDefinition showAllDepartmentsItem = new MenuItemDefinition(
                                showDepartmentsCmd, "dep.departments",
                                MenuConstants.MAIN_MENU_LOC_NODE_PATH);
                departmentsMenu.addMenuItemDefinition(showAllDepartmentsItem);

                return departmentsMenu;
        }

        public String getId() {
                return EmployessMenuConstants.DEPARTMENTS_MENU_ID;
        }

}