GroupsRepository.java

package it.inaf.ia2.gms.persistence;

import it.inaf.ia2.gms.persistence.model.Group;
import java.util.List;
import javax.transaction.Transactional;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

@Repository
@Transactional
public interface GroupsRepository extends JpaRepository<Group, String> {

    List<Group> findByParentGroup(Group parent);
}