List多个字段条件分组

List多个字段条件分组

public static String fetchGroupKey(UserPackageResidue userPackageResidue) {
          
   
        return userPackageResidue.getOrderNo() + "#" + userPackageResidue.getPackageName();
    }

public ResultVo<List<ClientPackageManageResp>> clientPackageManage() {
          
   
        List<UserPackageResidue> userPackageResidues = this.lambdaQuery().eq(UserPackageResidue::getUserId, JWTContextUtil.getCurrentUserId())
                .groupBy(UserPackageResidue::getOrderNo, UserPackageResidue::getPackageName)
                .orderByDesc(UserPackageResidue::getCreateTime)
                .last("limit 5").list();

        List<String> orderNos = new ArrayList<>();
        for (UserPackageResidue a : userPackageResidues) {
          
   
            orderNos.add(a.getOrderNo());
        }
        if (orderNos.size() <= 0) {
          
   
            return ResultVo.success(new ArrayList<>());
        }
        List<UserPackageResidue> mapList = this.lambdaQuery().in(UserPackageResidue::getOrderNo, orderNos).list();
        Map<String, List<UserPackageResidue>> map = new HashMap<>();
        map = mapList.stream().collect(Collectors.groupingBy(UserPackageResidueService::fetchGroupKey));
        List<ClientPackageManageResp> list = new ArrayList<>();
        for (UserPackageResidue u : userPackageResidues) {
          
   
            ClientPackageManageResp resp = new ClientPackageManageResp();
            resp.setPackageName(u.getPackageName());
            resp.setOrderNo(u.getOrderNo());
            if (map.containsKey(u.getOrderNo() + "#" + u.getPackageName())) {
          
   
                resp.setUserPackageResidues(map.get(u.getOrderNo() + "#" + u.getPackageName()));
            }
            list.add(resp);
        }
        return ResultVo.success(list);
    }