将服务注入EntityRepository是个好主意吗?

我正在使用实体类和实体类创建自己的ORM

在任何ORM中,我都探索过将任何服务注入实体是一个非常糟糕的主意。但有一个问题:将服务注入存储库是个好主意吗?

有一个抽象的例子:

//$user is object of Entity class in ORM
//we need to get actual valid entities here
$relatedEntities = $user->getRelatedEntities();
//where getRelatedEntities() calls method of RelatedEntityRepository

RelatedEntityRepository {
    private $injectedService;

    public function getByUserId($userId){
        if(!$this->injectedService->hasValidUserData($userId)){
            $this->injectedService->doSomething($userId);
        }
        return $this->getFromDbByUserId($userId)
    }
    private function getFromDbByUserId($userId){
        //returns data from DB
    }
}