package com.qingcheng.service.impl;
import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qingcheng.dao.BrandMapper;
import com.qingcheng.entity.PageResult;
import com.qingcheng.pojo.goods.Brand;
import com.qingcheng.service.goods.BrandService;
import org.springframework.beans.factory.annotation.Autowired;
import tk.mybatis.mapper.entity.Example;
import java.util.List;
import java.util.Map;
@Service
public class BrandServiceImpl implements BrandService {
@Autowired
private BrandMapper brandMapper;
/**
* 返回全部记录
* @return
*/
public List<Brand> findAll() {
return brandMapper.selectAll();
}
/**
* 分页查询
* @param page 页码
* @param size 每页记录数
* @return 分页结果
*/
public PageResult<Brand> findPage(int page, int size) {
PageHelper.startPage(page,size);
Page<Brand> brands = (Page<Brand>) brandMapper.selectAll();
return new PageResult<Brand>(brands.getTotal(),brands.getResult());
}
/**
* 条件查询
* @param searchMap 查询条件
* @return
*/
public List<Brand> findList(Map<String, Object> searchMap) {
Example example = createExample(searchMap);
return brandMapper.selectByExample(example);
}
/**
* 分页+条件查询
* @param searchMap
* @param page
* @param size
* @return
*/
public PageResult<Brand> findPage(Map<String, Object> searchMap, int page, int size) {
PageHelper.startPage(page,size);
Example example = createExample(searchMap);
Page<Brand> brands = (Page<Brand>) brandMapper.selectByExample(example);
return new PageResult<Brand>(brands.getTotal(),brands.getResult());
}
/**
* 根据Id查询
* @param id
* @return
*/
public Brand findById(Integer id) {
return brandMapper.selectByPrimaryKey(id);
}
/**
* 新增
* @param brand
*/
public void add(Brand brand) {
brandMapper.insert(brand);
}
/**
* 修改
* @param brand
*/
public void update(Brand brand) {
brandMapper.updateByPrimaryKeySelective(brand);
}
/**
* 删除
* @param id
*/
public void delete(Integer id) {
brandMapper.deleteByPrimaryKey(id);
}
/**
* 构建查询条件
* @param searchMap
* @return
*/
private Example createExample(Map<String, Object> searchMap){
Example example=new Example(Brand.class);
Example.Criteria criteria = example.createCriteria();
if(searchMap!=null){
// 品牌名称
if(searchMap.get("name")!=null && !"".equals(searchMap.get("name"))){
criteria.andLike("name","%"+searchMap.get("name")+"%");
}
// 品牌图片地址
if(searchMap.get("image")!=null && !"".equals(searchMap.get("image"))){
criteria.andLike("image","%"+searchMap.get("image")+"%");
}
// 品牌的首字母
if(searchMap.get("letter")!=null && !"".equals(searchMap.get("letter"))){
criteria.andLike("letter","%"+searchMap.get("letter")+"%");
}
// 品牌id
if(searchMap.get("id")!=null ){
criteria.andEqualTo("id",searchMap.get("id"));
}
// 排序
if(searchMap.get("seq")!=null ){
criteria.andEqualTo("seq",searchMap.get("seq"));
}
}
return example;
}
}
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