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1장: DAO의 확장 - 관계설정 책임의 분리
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전의 코드는 관계를 설정해주는 것에 대한 관심을 분리할 필요성이 있었다.
클라이언트에 해당 관심사의 책임을 맡김으로써 해결할 수 있다.

'런타임 시에 결정된다.'
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kimdahyeee committed Mar 6, 2020
1 parent a2de774 commit 15338b2
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Showing 2 changed files with 7 additions and 4 deletions.
5 changes: 4 additions & 1 deletion src/main/java/com/toby/tobyspring/MainTest.java
@@ -1,13 +1,16 @@
package com.toby.tobyspring;

import com.toby.tobyspring.user.dao.ConnectionMaker;
import com.toby.tobyspring.user.dao.DUserConnectionMaker;
import com.toby.tobyspring.user.dao.UserDao;
import com.toby.tobyspring.user.domain.User;

import java.sql.SQLException;

public class MainTest {
public static void main(String[] args) throws SQLException, ClassNotFoundException {
UserDao userDao = new UserDao();
ConnectionMaker connectionMaker = new DUserConnectionMaker();
UserDao userDao = new UserDao(connectionMaker);

User user = new User();
user.setId("dahyekim");
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6 changes: 3 additions & 3 deletions src/main/java/com/toby/tobyspring/user/dao/UserDao.java
Expand Up @@ -4,11 +4,11 @@

import java.sql.*;

public abstract class UserDao {
public class UserDao {
private ConnectionMaker connectionMaker;

public UserDao() {
this.connectionMaker = new DUserConnectionMaker();
public UserDao(ConnectionMaker connectionMaker) {
this.connectionMaker = connectionMaker;
}
public void add(User user) throws ClassNotFoundException, SQLException {
Connection connection = connectionMaker.makeNewConnection();
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