raex_back/src/main/java/com/izouma/nineth/repo/UserTokenRepo.java

package com.izouma.nineth.repo;

import com.izouma.nineth.domain.UserToken;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Modifying;

import javax.transaction.Transactional;
import java.util.Optional;

public interface UserTokenRepo extends JpaRepository<UserToken, Long> {
    @Modifying
    @Transactional
    int deleteByUserId(Long userId);

    Optional<UserToken> findFirstByToken(String token);
}