@Repository
public class MemberDaoJdbc implements MemberDao{
@Autowired SimpleJdbcTemplate jdbcTemplate;
public void setMemberMapper(RowMapper<Member> memberMapper) {
this.memberMapper = memberMapper;
}
RowMapper<Member> memberMapper = new RowMapper<Member>(){
public Member mapRow(ResultSet rs, int rowNum) throws SQLException {
Member member = new Member();
member.setId(rs.getInt("id"));
member.setName(rs.getString("name"));
member.setJoined(rs.getDate("joined"));
return member;
}};
public void add(Member member) {
jdbcTemplate.update("insert into member(id, name, joined) values (?, ?, ?)",
member.getId(), member.getName(), member.getJoined());
}
public void delete(int id) {
jdbcTemplate.update("delete from member where id = ?", id);
}
public Member get(int id) {
return jdbcTemplate.queryForObject("select * from member where id = ?", memberMapper, id);
}
public List<Member> list() {
return jdbcTemplate.query("select * from member", memberMapper);
}
public void update(Member member) {
jdbcTemplate.update(
"update member set name = :name, joined = :joined where id = :id",
new BeanPropertySqlParameterSource(member));
}
}
대충 이런 코드가 된다. 스프링이 제공해주는 SimplJdbcTemplate은 멀티 쓰레드 환경에서 공유하면서 사용해도 안전한 객체이다. 따라서 빈으로 등록해놓고 주입받아서 쓴다고 한들 문제될 것이 없다.
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/testContext.xml")
@Transactional
public class MemberDaoJdbcTest {
@Autowired MemberDaoJdbc memberDao;
@Test
public void di(){
assertThat(memberDao, is(notNullValue()));
}
@Test
public void crud(){
Member member = new Member();
member.setId(1);
member.setName("whiteship");
member.setJoined(new Date());
memberDao.add(member);
assertThat(memberDao.list().size(), is(1));
member.setName("기선");
memberDao.update(member);
assertThat(memberDao.get(1).getName(), is("기선"));
memberDao.delete(1);
assertThat(memberDao.list().size(), is(0));
}
}
