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[JDBC 라이브러리 구현하기 - 1단계] 우가(윤정욱) 미션 제출합니다. (#285)
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Original file line number | Diff line number | Diff line change |
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@@ -1,121 +1,59 @@ | ||
package com.techcourse.dao; | ||
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import com.techcourse.domain.User; | ||
import org.springframework.jdbc.core.JdbcTemplate; | ||
import org.slf4j.Logger; | ||
import org.slf4j.LoggerFactory; | ||
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import javax.sql.DataSource; | ||
import java.sql.Connection; | ||
import java.sql.PreparedStatement; | ||
import java.sql.ResultSet; | ||
import java.sql.SQLException; | ||
import java.util.List; | ||
import javax.sql.DataSource; | ||
import org.springframework.jdbc.core.JdbcTemplate; | ||
import org.springframework.jdbc.core.RowMapper; | ||
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public class UserDao { | ||
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private static final Logger log = LoggerFactory.getLogger(UserDao.class); | ||
private final RowMapper<User> mapper = resultSet -> { | ||
final long id = resultSet.getLong("id"); | ||
final String account = resultSet.getString("account"); | ||
final String password = resultSet.getString("password"); | ||
final String email = resultSet.getString("email"); | ||
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private final DataSource dataSource; | ||
return new User(id, account, password, email); | ||
}; | ||
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private final JdbcTemplate jdbcTemplate; | ||
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public UserDao(final DataSource dataSource) { | ||
this.dataSource = dataSource; | ||
this(new JdbcTemplate(dataSource)); | ||
} | ||
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public UserDao(final JdbcTemplate jdbcTemplate) { | ||
this.dataSource = null; | ||
this.jdbcTemplate = jdbcTemplate; | ||
} | ||
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public void insert(final User user) { | ||
final var sql = "insert into users (account, password, email) values (?, ?, ?)"; | ||
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Connection conn = null; | ||
PreparedStatement pstmt = null; | ||
try { | ||
conn = dataSource.getConnection(); | ||
pstmt = conn.prepareStatement(sql); | ||
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log.debug("query : {}", sql); | ||
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pstmt.setString(1, user.getAccount()); | ||
pstmt.setString(2, user.getPassword()); | ||
pstmt.setString(3, user.getEmail()); | ||
pstmt.executeUpdate(); | ||
} catch (SQLException e) { | ||
log.error(e.getMessage(), e); | ||
throw new RuntimeException(e); | ||
} finally { | ||
try { | ||
if (pstmt != null) { | ||
pstmt.close(); | ||
} | ||
} catch (SQLException ignored) {} | ||
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try { | ||
if (conn != null) { | ||
conn.close(); | ||
} | ||
} catch (SQLException ignored) {} | ||
} | ||
jdbcTemplate.execute(sql, user.getAccount(), user.getPassword(), user.getEmail()); | ||
} | ||
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public void update(final User user) { | ||
// todo | ||
final var sql = "update users set password = ? where id = ?"; | ||
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jdbcTemplate.execute(sql, user.getPassword(), user.getId()); | ||
} | ||
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public List<User> findAll() { | ||
// todo | ||
return null; | ||
final var sql = "select id, account, password, email from users"; | ||
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return jdbcTemplate.queryForObjects(sql, mapper); | ||
} | ||
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public User findById(final Long id) { | ||
final var sql = "select id, account, password, email from users where id = ?"; | ||
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Connection conn = null; | ||
PreparedStatement pstmt = null; | ||
ResultSet rs = null; | ||
try { | ||
conn = dataSource.getConnection(); | ||
pstmt = conn.prepareStatement(sql); | ||
pstmt.setLong(1, id); | ||
rs = pstmt.executeQuery(); | ||
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log.debug("query : {}", sql); | ||
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if (rs.next()) { | ||
return new User( | ||
rs.getLong(1), | ||
rs.getString(2), | ||
rs.getString(3), | ||
rs.getString(4)); | ||
} | ||
return null; | ||
} catch (SQLException e) { | ||
log.error(e.getMessage(), e); | ||
throw new RuntimeException(e); | ||
} finally { | ||
try { | ||
if (rs != null) { | ||
rs.close(); | ||
} | ||
} catch (SQLException ignored) {} | ||
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try { | ||
if (pstmt != null) { | ||
pstmt.close(); | ||
} | ||
} catch (SQLException ignored) {} | ||
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try { | ||
if (conn != null) { | ||
conn.close(); | ||
} | ||
} catch (SQLException ignored) {} | ||
} | ||
return jdbcTemplate.queryForObject(sql, mapper, id); | ||
} | ||
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public User findByAccount(final String account) { | ||
// todo | ||
return null; | ||
final var sql = "select id, account, password, email from users where account = ?"; | ||
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return jdbcTemplate.queryForObject(sql, mapper, account); | ||
} | ||
} |
10 changes: 5 additions & 5 deletions
10
app/src/test/java/com/techcourse/service/UserServiceTest.java
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9 changes: 9 additions & 0 deletions
9
jdbc/src/main/java/org/springframework/jdbc/core/RowMapper.java
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,9 @@ | ||
package org.springframework.jdbc.core; | ||
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import java.sql.ResultSet; | ||
import java.sql.SQLException; | ||
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public interface RowMapper<T> { | ||
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T get(final ResultSet resultSet) throws SQLException; | ||
} |
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Original file line number | Diff line number | Diff line change |
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@@ -1,5 +1,6 @@ | ||
spring: | ||
jpa: | ||
open-in-view: false | ||
show-sql: true | ||
generate-ddl: true | ||
hibernate: | ||
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