Stept 6 (UPDATE)

src/com/rhizome/example/dao/EmployeeDAO.java

@@ -13,6 +13,7 @@ import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 
+import com.rhizome.example.dto.EmployeeDTO;
 import com.rhizome.example.util.DbUtil;
 
 public class EmployeeDAO {
@@ -48,11 +49,16 @@ public class EmployeeDAO {
 	 * @throws SQLException
 	 * @throws ClassNotFoundException
 	 */
-	public List<String> selectAll() throws SQLException, ClassNotFoundException {
+	public List<EmployeeDTO> selectAll() throws SQLException, ClassNotFoundException {
-		List<String> rtnList = new ArrayList<>();
+		List<EmployeeDTO> rtnList = new ArrayList<>();
 		StringBuilder sql = new StringBuilder();
 		sql.append(" SELECT ");
-		sql.append("    " + "*");
+		sql.append("    " + ID_EMPLOYEE + ",");
+		sql.append("    " + NM_EMPLOYEE + ",");
+		sql.append("    " + KN_EMPLOYEE + ",");
+		sql.append("    " + MAIL_ADDRESS + ",");
+		sql.append("    " + PASSWORD + ",");
+		sql.append("    " + ID_DEPARTMENT);
 		sql.append(" FROM ");
 		sql.append("    " + TBL_NAME);
 		try {
@@ -60,7 +66,16 @@ public class EmployeeDAO {
 			this.stmt = con.prepareStatement(sql.toString());
 			rs = stmt.executeQuery();
 			while (rs.next()) {
-				rtnList.add(rs.getString(NM_EMPLOYEE));
+				EmployeeDTO dto = new EmployeeDTO();
+				dto.setIdEmployee(rs.getInt(ID_EMPLOYEE));
+				dto.setNmEmployee(rs.getString(NM_EMPLOYEE));
+				dto.setKnEmployee(rs.getString(KN_EMPLOYEE));
+				dto.setMailAddress(rs.getString(MAIL_ADDRESS));
+				dto.setPassword(rs.getString(PASSWORD));
+				dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+
+				// dto ကို List ထဲသို့ ထည့်ရပါမည်
+				rtnList.add(dto);
 			}
 		} finally {
 			DbUtil.closeStatement(this.stmt);
@@ -68,4 +83,117 @@ public class EmployeeDAO {
 		return rtnList;
 	}
 
+	//use selectById make the method 
+	public List<EmployeeDTO> selectById(int empId) throws SQLException, ClassNotFoundException {
+		//calling to DTO and new inout array
+		List<EmployeeDTO> rtnList = new ArrayList<>();
+		//(StringBuilder) ကို သုံးခြင်းသည် Code များကို ဖတ်ရလွယ်ကူစေရန်၊ ပြင်ဆင်ရလွယ်ကူစေရန်
+		StringBuilder sql = new StringBuilder();
+		//append မသုံးရင်စာ‌ကြောင်းပိုရှဉ္လို့ append နဲံရေး
+		sql.append(" SELECT ");
+		sql.append("    " + ID_EMPLOYEE + ",");
+		sql.append("    " + NM_EMPLOYEE + ",");
+		sql.append("    " + KN_EMPLOYEE + ",");
+		sql.append("    " + MAIL_ADDRESS + ",");
+		sql.append("    " + PASSWORD + ",");
+		sql.append("    " + ID_DEPARTMENT);
+		sql.append(" FROM ");
+		sql.append("    " + TBL_NAME);
+		sql.append(" WHERE ");
+		sql.append("    " + ID_EMPLOYEE + " = ? ");
+
+		try {
+			this.stmt = con.prepareStatement(sql.toString());
+			this.stmt.setInt(1, empId);
+			rs = stmt.executeQuery();
+			while (rs.next()) {
+				EmployeeDTO dto = new EmployeeDTO();
+				dto.setIdEmployee(rs.getInt(ID_EMPLOYEE));
+				dto.setNmEmployee(rs.getString(NM_EMPLOYEE));
+				dto.setKnEmployee(rs.getString(KN_EMPLOYEE));
+				dto.setMailAddress(rs.getString(MAIL_ADDRESS));
+				dto.setPassword(rs.getString(PASSWORD));
+				dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+
+				rtnList.add(dto);
+			}
+		} finally {
+			DbUtil.closeStatement(this.stmt);
+		}
+		return rtnList;
+	}
+//Delete method 
+	public void empDelete(int empId) throws  ClassNotFoundException, SQLException {
+		StringBuilder sql = new StringBuilder();
+		sql.append(" DELETE FROM ");
+		sql.append("    " + TBL_NAME);
+		sql.append(" WHERE ");
+		sql.append("    " + ID_EMPLOYEE + " = ? ");
+//for check 
+		try {
+			this.stmt = con.prepareStatement(sql.toString());
+			this.stmt.setInt(1, empId);
+			this.stmt.executeUpdate();
+		} finally {
+			DbUtil.closeStatement(this.stmt);
+		}
+
+	}
+	public void empInsert (String nmemp, String knname,String mail, String pw, int deptId) throws  ClassNotFoundException, SQLException{
+		StringBuilder sql = new StringBuilder();
+		sql.append("INSERT INTO");
+		sql.append("    " + TBL_NAME);
+		sql.append(" ( ");
+		
+		sql.append("    " + NM_EMPLOYEE + ",");
+		sql.append("    " + KN_EMPLOYEE + ",");
+		sql.append("    " + MAIL_ADDRESS + ",");
+		sql.append("    " + PASSWORD + ",");
+		sql.append("    " + ID_DEPARTMENT);
+		sql.append(" ) ");
+		sql.append(" VALUES (?, ?, ?, ?, ?) ");
+	
+		try {
+			this.stmt = con.prepareStatement(sql.toString());
+			this.stmt.setString(1, nmemp);
+			this.stmt.setString(2, knname);
+			this.stmt.setString(3, mail);
+			this.stmt.setString(4, pw);
+			this.stmt.setInt(5, deptId);
+
+			this.stmt.executeUpdate();
+		} finally {
+			DbUtil.closeStatement(this.stmt);
+		}
+
+	}
+	public void empUpdate (String nmemp, String knname,String mail, String pw, int deptId,int empId) throws  ClassNotFoundException, SQLException{
+		StringBuilder sql = new StringBuilder();
+		sql.append("UPDATE ");
+		sql.append("    " + TBL_NAME);
+		sql.append(" SET ");
+		
+		sql.append("    " + NM_EMPLOYEE + " = ?, ");
+		sql.append("    " + KN_EMPLOYEE + " = ?, ");
+		sql.append("    " + MAIL_ADDRESS + " = ?, ");
+		sql.append("    " + PASSWORD + " = ?, ");
+		sql.append("    " + ID_DEPARTMENT + " = ? ");
+		sql.append(" WHERE ");
+		sql.append("    " + ID_EMPLOYEE + " = ? ");
+	
+		try {
+			this.stmt = con.prepareStatement(sql.toString());
+			this.stmt.setString(1, nmemp);
+			this.stmt.setString(2, knname);
+			this.stmt.setString(3, mail);
+			this.stmt.setString(4, pw);
+			this.stmt.setInt(5, deptId);
+			this.stmt.setInt(6, empId);
+
+			this.stmt.executeUpdate();
+		} finally {
+			DbUtil.closeStatement(this.stmt);
+		}
+
+	}
 }

src/com/rhizome/example/main/Main.java

@@ -7,6 +7,7 @@ import java.util.List;
 import java.util.Scanner;
 
 import com.rhizome.example.dao.EmployeeDAO;
+import com.rhizome.example.dto.EmployeeDTO;
 import com.rhizome.example.util.DbUtil;
 
 /**
@@ -53,10 +54,13 @@ public class Main {
 			empSelect();
 			break;
 		case "2":
+			empInsert();
 			break;
 		case "3":
+			empUpdate();
 			break;
 		case "4":
+			empDelete();
 			break;
 		case "9":
 			return;
@@ -69,6 +73,67 @@ public class Main {
 		}
 	}
 
+	private void empUpdate() throws ClassNotFoundException, SQLException{
+		// TODO 自動生成されたメソッド・スタブ
+		Connection con = DbUtil.getConnection();
+		EmployeeDAO empDao = new EmployeeDAO(con);
+
+		try {
+			// ID ရိုက်ထည့်ခိုင်းခြင်း
+			String strId = inputCheck("ID", true);
+			int id = Integer.parseInt(strId);
+
+			// ID ရှိမရှိ စစ်ဆေးခြင်း (selectById ကို သုံးပါ)
+			List<EmployeeDTO> empList = empDao.selectById(id);
+			if (empList.isEmpty()) {
+				System.out.println("入力された値で情報がみつかりませんでした");
+				return;
+			}
+
+			// အချက်အလက် အသစ်များ တောင်းခံခြင်း
+			String name = inputCheck("社員名", false);
+			String kana = inputCheck("フリガナ", false);
+			String mail = inputCheck("メールアドレス", false);
+			String pass = inputCheck("パスワード", false);
+			
+			String strDeptId = inputCheck("部署ID", true);
+			int deptId = Integer.parseInt(strDeptId);
+
+			// DB ထဲသို့ ပြင်ဆင်ချက် ထည့်သွင်းခြင်း
+			empDao.empUpdate(name, kana, mail, pass, deptId,id);
+			System.out.println("更新が完了しました");
+
+		} finally {
+			DbUtil.closeConnection(empDao.con);
+		}
+	}
+		
+	
+
+	public static void empInsert() throws ClassNotFoundException, SQLException {
+		Connection con = DbUtil.getConnection();
+		EmployeeDAO empDao = new EmployeeDAO(con);
+
+		try {
+			// အချက်အလက်များ အသီးသီး တောင်းခံခြင်း (inputCheck ကို သုံးပါ)
+			String name = inputCheck("社員名", false);
+			String kana = inputCheck("フリガナ", false);
+			String mail = inputCheck("メールアドレス", false);
+			String pass = inputCheck("パスワード", false);
+			
+			// 部署ID အတွက် Numerical Check ဖြစ်သည့် true ထည့်ပါမည်
+			String strDeptId = inputCheck("部署ID", true);
+			int deptId = Integer.parseInt(strDeptId);
+
+			// DB ထဲသို့ ထည့်သွင်းခြင်း
+			empDao.empInsert(name, kana, mail, pass, deptId);
+			System.out.println("登録が完了しました");
+
+		} finally {
+			DbUtil.closeConnection(empDao.con);
+		}
+	}
+
 	/**
 	 * 社員テーブルから情報を検索する
 	 *
@@ -76,7 +141,8 @@ public class Main {
 	 * @throws SQLException
 	 */
 	public static void empSelect() throws ClassNotFoundException, SQLException {
-		List<String> empList = new ArrayList<>();
+		//List<String> empList = new ArrayList<>();
+		List<EmployeeDTO> empList = new ArrayList<>();
 		Connection con = DbUtil.getConnection();
 		EmployeeDAO empDao = new EmployeeDAO(con);
 		System.out.println("1:全検索 2:条件検索 それ以外:戻る");
@@ -84,19 +150,70 @@ public class Main {
 		try {
 			switch (select) {
 			case "1":
+				//empList = empDao.selectAll();
 				empList = empDao.selectAll();
 				break;
+			case "2":
+				// inputCheck 方法ကို သုံးပြီး ID ရိုက်ခိုင်းပါ (数値 check အတွက် true ထည့်ပါ)
+				String strId = inputCheck("ID", true);
+				int id = Integer.parseInt(strId);
+				empList = empDao.selectById(id);
+		;
+
 			default:
 				return;
 			}
-			for (String emp : empList) {
+
-				System.out.println(emp);
+			// ရှာဖွေတွေ့ရှိခြင်း မရှိပါက
+			if (empList.isEmpty()) {
+				System.out.println("入力された値で情報がみつかりませんでした");
+				return;
+			}
+
+			for (EmployeeDTO emp : empList) {
+				//for (String emp : empList) {
+				//System.out.println(emp);
+				System.out.println(emp.getIdEmployee() + "\t" +
+						emp.getNmEmployee() + "\t" +
+						emp.getKnEmployee() + "\t" +
+						emp.getMailAddress() + "\t" +
+						emp.getPassword() + "\t" +
+						emp.getIdDepartment());
 			}
 		} finally {
 			DbUtil.closeConnection(empDao.con);
 		}
 	}
 
+		public static void empDelete() throws ClassNotFoundException, SQLException {
+		Connection con = DbUtil.getConnection();
+		EmployeeDAO empDao = new EmployeeDAO(con);
+
+		try {
+			// ID ရိုက်ထည့်ခိုင်းခြင်း (inputCheck ကို သုံးပါ)
+			String strId = inputCheck("ID", true);
+			int id = Integer.parseInt(strId);
+			//System.out.println("IDを入力してください");
+
+			// ID ရှိမရှိ စစ်ဆေးခြင်း (selectById ကို သုံးပါ)
+			List<EmployeeDTO> empList = empDao.selectById(id);
+			if (empList.isEmpty()) {
+				System.out.println("入力された値で情報がみつかりませんでした");
+				return;
+			}
+
+			// ဖျက်ရန် အတည်ပြုချက် (Confirmation) တောင်းခြင်း
+			System.out.println("指定されたIDの情報を削除します？ Y/y");
+			String confirm = sc.nextLine();
+			if ("Y".equalsIgnoreCase(confirm)) {
+				empDao.empDelete(id);
+				System.out.println("削除が完了しました");
+			}
+		}finally {
+			DbUtil.closeConnection(empDao.con);
+		}
+		}
+
 	/**
 	 * フラグを判定し、テーブル名を取得する
 	 *
@@ -146,4 +263,7 @@ public class Main {
 		}
 		return str;
 	}
+
+
+		
 }

src/com/rhizome/example/util/DbUtil.java

@@ -42,22 +42,19 @@ public class DbUtil {
 	 * 例外			：ClassNotFoundException, SQLException
 	 * 処理			：JDBCドライバを読み込み後、DB接続する。
 	 * 				  生成されたConnectionを返却する
-	 * 				  ※Connection生成には上記の定数を活用してください
+	 * 				  ※Connection生成には上記の定数を活用してくださ
 	 */
-	public static Connection getConnection() throws ClassNotFoundException, SQLException {
-		try {
-			Class.forName(DB_DRIVER);
-			return DriverManager.getConnection(DB_URL, DB_USER, DB_PASS);
-		} catch (ClassNotFoundException e) {
-			System.out.println();
-			throw e;
-		} catch (SQLException e) {
-			System.out.println();
-			throw e;
-		}
 
+	public static Connection getConnection() throws ClassNotFoundException, SQLException {
+		//connection is null or not null and create new 
+		if (con == null || con.isClosed()) {
+			Class.forName(DB_DRIVER);
+			con = DriverManager.getConnection(DB_URL, DB_USER, DB_PASS);
+		}
+		return con;
 	}
 	
+	
 	/*
 	 * TODO 以下の仕様でメソッドを作成してください。
 	 *
@@ -67,14 +64,12 @@ public class DbUtil {
 	 * 例外			：SQLException
 	 * 処理			：引数のDBステートメントがnullでない場合、そのDBステートメントをクローズする
 	 */
-	public static void closeStatement(PreparedStatement stmt) {
+	public static void closeStatement(PreparedStatement stmt) throws SQLException {
 		if (stmt != null) {
-			try {
+			stmt.close();
-				stmt.close();
+			
-			} catch (SQLException e) {
-				System.out.println();
-			}
 		}
+	
 	}
 
 	/*
@@ -86,15 +81,10 @@ public class DbUtil {
 	 * 例外			：SQLException
 	 * 処理			：引数のコネクションがnullでない場合、そのコネクションを切断する
 	 */
-	public static void closeConnection(Connection con) {
+	public static void closeConnection(Connection con) throws SQLException {
-		if (con != null) {
+		if(con != null) {
-			try {
+			con.close();
-				if (!con.isClosed()) {
+		
-					con.close();
-				}
-			} catch (SQLException e) {
-				e.printStackTrace();
-			}
 		}
 	}