Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package converters; import models.Role; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.core.convert.converter.Converter; import org.springframework.stereotype.Component; import repositories.RolesRepository; /** * * @author sergio */ @Component public class StringRoleConverter implements Converter<String, Role> { @Autowired private RolesRepository rolesRepository; @Override public Role convert(String source) { return rolesRepository.findOne(Long.parseLong(source)); } }