UserRepository.java

package com.exadel.repository;

import com.exadel.model.entity.user.User;
import com.exadel.model.entity.user.UserRole;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.Optional;

@Transactional
public interface UserRepository extends JpaRepository<User, Long> {

    Page<User> findAll(Pageable pageable);

    Optional<User> findOneByEmail(String email);

    List<User> findByRole(UserRole role);

    List<User> findByRoleNot(UserRole role);
}