/**
* 根据菜品ID查找菜品列表
*
* @param categoryId 菜品ID
* @return 菜品实体列表
*/
public List<Dish> getDishesByCategoryId(Long categoryId) {
List<Dish> result = new ArrayList<Dish>();
Category category = categoryDao.get(categoryId);
if (null != category) {
for (Dish dish : category.getDishes()) {
// REST服务只获取在售的菜品
if (dish.isOnSell()) {
result.add(dish);
}
}
}
return result;
}
/**
* 删除菜品分类
*
* @param categoryId 菜品分类id
* @throws CategoryNotFoundException 菜品分类不存在异常
*/
@Transactional(
propagation = Propagation.REQUIRED,
readOnly = false,
rollbackFor = Exception.class)
public void deleteCategory(Long categoryId) throws CategoryNotFoundException {
// 1. 检查需要删除的菜品分类是否存在
Category category = this.getCategoryById(categoryId);
// 2. 将要删除菜品分类下的菜品重置为默认分类
Category defaultCategory = categoryDao.getCategoryByName(Constants.DEFAULT_CATEGORY);
if (null == defaultCategory) {
throw new CategoryNotFoundException(
MessageUtil.getMessage("category_name_msg", Constants.DEFAULT_CATEGORY));
} else {
for (Dish dish : category.getDishes()) {
dish.setCategory(defaultCategory);
dishDao.update(dish);
}
}
// 3. 删除菜品分类
categoryDao.delete(category);
}