iailab-plat.git

houzhongyi

2024-07-11 e7c1260db32209a078a962aaa0ad5492c35774fb

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e7c126	1	package com.iailab.module.infra.service.demo.demo02;
H	2
	3	import com.iailab.framework.common.util.object.BeanUtils;
	4	import com.iailab.module.infra.controller.admin.demo.demo02.vo.Demo02CategoryListReqVO;
	5	import com.iailab.module.infra.controller.admin.demo.demo02.vo.Demo02CategorySaveReqVO;
	6	import com.iailab.module.infra.dal.dataobject.demo.demo02.Demo02CategoryDO;
	7	import com.iailab.module.infra.dal.mysql.demo.demo02.Demo02CategoryMapper;
	8	import org.springframework.stereotype.Service;
	9	import org.springframework.validation.annotation.Validated;
	10
	11	import javax.annotation.Resource;
	12	import java.util.List;
	13	import java.util.Objects;
	14
	15	import static com.iailab.framework.common.exception.util.ServiceExceptionUtil.exception;
	16	import static com.iailab.module.infra.enums.ErrorCodeConstants.*;
	17
	18	/**
	19	* 示例分类 Service 实现类
	20	*
	21	* @author iailab
	22	*/
	23	@Service
	24	@Validated
	25	public class Demo02CategoryServiceImpl implements Demo02CategoryService {
	26
	27	@Resource
	28	private Demo02CategoryMapper demo02CategoryMapper;
	29
	30	@Override
	31	public Long createDemo02Category(Demo02CategorySaveReqVO createReqVO) {
	32	// 校验父级编号的有效性
	33	validateParentDemo02Category(null, createReqVO.getParentId());
	34	// 校验名字的唯一性
	35	validateDemo02CategoryNameUnique(null, createReqVO.getParentId(), createReqVO.getName());
	36
	37	// 插入
	38	Demo02CategoryDO demo02Category = BeanUtils.toBean(createReqVO, Demo02CategoryDO.class);
	39	demo02CategoryMapper.insert(demo02Category);
	40	// 返回
	41	return demo02Category.getId();
	42	}
	43
	44	@Override
	45	public void updateDemo02Category(Demo02CategorySaveReqVO updateReqVO) {
	46	// 校验存在
	47	validateDemo02CategoryExists(updateReqVO.getId());
	48	// 校验父级编号的有效性
	49	validateParentDemo02Category(updateReqVO.getId(), updateReqVO.getParentId());
	50	// 校验名字的唯一性
	51	validateDemo02CategoryNameUnique(updateReqVO.getId(), updateReqVO.getParentId(), updateReqVO.getName());
	52
	53	// 更新
	54	Demo02CategoryDO updateObj = BeanUtils.toBean(updateReqVO, Demo02CategoryDO.class);
	55	demo02CategoryMapper.updateById(updateObj);
	56	}
	57
	58	@Override
	59	public void deleteDemo02Category(Long id) {
	60	// 校验存在
	61	validateDemo02CategoryExists(id);
	62	// 校验是否有子示例分类
	63	if (demo02CategoryMapper.selectCountByParentId(id) > 0) {
	64	throw exception(DEMO02_CATEGORY_EXITS_CHILDREN);
	65	}
	66	// 删除
	67	demo02CategoryMapper.deleteById(id);
	68	}
	69
	70	private void validateDemo02CategoryExists(Long id) {
	71	if (demo02CategoryMapper.selectById(id) == null) {
	72	throw exception(DEMO02_CATEGORY_NOT_EXISTS);
	73	}
	74	}
	75
	76	private void validateParentDemo02Category(Long id, Long parentId) {
	77	if (parentId == null \|\| Demo02CategoryDO.PARENT_ID_ROOT.equals(parentId)) {
	78	return;
	79	}
	80	// 1. 不能设置自己为父示例分类
	81	if (Objects.equals(id, parentId)) {
	82	throw exception(DEMO02_CATEGORY_PARENT_ERROR);
	83	}
	84	// 2. 父示例分类不存在
	85	Demo02CategoryDO parentDemo02Category = demo02CategoryMapper.selectById(parentId);
	86	if (parentDemo02Category == null) {
	87	throw exception(DEMO02_CATEGORY_PARENT_NOT_EXITS);
	88	}
	89	// 3. 递归校验父示例分类，如果父示例分类是自己的子示例分类，则报错，避免形成环路
	90	if (id == null) { // id 为空，说明新增，不需要考虑环路
	91	return;
	92	}
	93	for (int i = 0; i < Short.MAX_VALUE; i++) {
	94	// 3.1 校验环路
	95	parentId = parentDemo02Category.getParentId();
	96	if (Objects.equals(id, parentId)) {
	97	throw exception(DEMO02_CATEGORY_PARENT_IS_CHILD);
	98	}
	99	// 3.2 继续递归下一级父示例分类
	100	if (parentId == null \|\| Demo02CategoryDO.PARENT_ID_ROOT.equals(parentId)) {
	101	break;
	102	}
	103	parentDemo02Category = demo02CategoryMapper.selectById(parentId);
	104	if (parentDemo02Category == null) {
	105	break;
	106	}
	107	}
	108	}
	109
	110	private void validateDemo02CategoryNameUnique(Long id, Long parentId, String name) {
	111	Demo02CategoryDO demo02Category = demo02CategoryMapper.selectByParentIdAndName(parentId, name);
	112	if (demo02Category == null) {
	113	return;
	114	}
	115	// 如果 id 为空，说明不用比较是否为相同 id 的示例分类
	116	if (id == null) {
	117	throw exception(DEMO02_CATEGORY_NAME_DUPLICATE);
	118	}
	119	if (!Objects.equals(demo02Category.getId(), id)) {
	120	throw exception(DEMO02_CATEGORY_NAME_DUPLICATE);
	121	}
	122	}
	123
	124	@Override
	125	public Demo02CategoryDO getDemo02Category(Long id) {
	126	return demo02CategoryMapper.selectById(id);
	127	}
	128
	129	@Override
	130	public List<Demo02CategoryDO> getDemo02CategoryList(Demo02CategoryListReqVO listReqVO) {
	131	return demo02CategoryMapper.selectList(listReqVO);
	132	}
	133
	134	}