From 1ca3a3f3dd8de83ea04e20254f250edeceecdcf7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EB=8B=A4=ED=98=9C?= <dahye432111@gmail.com>
Date: Sun, 8 Mar 2020 21:07:32 +0900
Subject: [PATCH] =?UTF-8?q?1=EC=9E=A5:=20IoC=20-=20=EC=98=A4=EB=B8=8C?=
 =?UTF-8?q?=EC=A0=9D=ED=8A=B8=20=ED=8C=A9=ED=86=A0=EB=A6=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

관계를 맺어주는 관심사를 분리해보자.
덕분에 MainTest에서는 UserDao가 어떻게 생성되는 지 신경쓰지 않고 사용하면 그만이다.
---
 src/main/java/com/toby/tobyspring/MainTest.java          | 4 ++--
 .../java/com/toby/tobyspring/user/dao/DaoFactory.java    | 9 +++++++++
 src/main/java/com/toby/tobyspring/user/dao/UserDao.java  | 1 +
 3 files changed, 12 insertions(+), 2 deletions(-)
 create mode 100644 src/main/java/com/toby/tobyspring/user/dao/DaoFactory.java

diff --git a/src/main/java/com/toby/tobyspring/MainTest.java b/src/main/java/com/toby/tobyspring/MainTest.java
index ae961ee..1874381 100644
--- a/src/main/java/com/toby/tobyspring/MainTest.java
+++ b/src/main/java/com/toby/tobyspring/MainTest.java
@@ -2,6 +2,7 @@
 
 import com.toby.tobyspring.user.dao.ConnectionMaker;
 import com.toby.tobyspring.user.dao.DUserConnectionMaker;
+import com.toby.tobyspring.user.dao.DaoFactory;
 import com.toby.tobyspring.user.dao.UserDao;
 import com.toby.tobyspring.user.domain.User;
 
@@ -9,8 +10,7 @@
 
 public class MainTest {
     public static void main(String[] args) throws SQLException, ClassNotFoundException {
-        ConnectionMaker connectionMaker = new DUserConnectionMaker();
-        UserDao userDao = new UserDao(connectionMaker);
+        UserDao userDao = new DaoFactory().userDao();
 
         User user = new User();
         user.setId("dahyekim");
diff --git a/src/main/java/com/toby/tobyspring/user/dao/DaoFactory.java b/src/main/java/com/toby/tobyspring/user/dao/DaoFactory.java
new file mode 100644
index 0000000..1721aa3
--- /dev/null
+++ b/src/main/java/com/toby/tobyspring/user/dao/DaoFactory.java
@@ -0,0 +1,9 @@
+package com.toby.tobyspring.user.dao;
+
+public class DaoFactory {
+    public UserDao userDao() {
+        ConnectionMaker connectionMaker = new DUserConnectionMaker();
+        UserDao userDao = new UserDao(connectionMaker);
+        return userDao;
+    }
+}
diff --git a/src/main/java/com/toby/tobyspring/user/dao/UserDao.java b/src/main/java/com/toby/tobyspring/user/dao/UserDao.java
index f3fa713..378392a 100644
--- a/src/main/java/com/toby/tobyspring/user/dao/UserDao.java
+++ b/src/main/java/com/toby/tobyspring/user/dao/UserDao.java
@@ -10,6 +10,7 @@ public class UserDao {
     public UserDao(ConnectionMaker connectionMaker) {
         this.connectionMaker = connectionMaker;
     }
+
     public void add(User user) throws ClassNotFoundException, SQLException {
         Connection connection = connectionMaker.makeNewConnection();
         // sql 실행