７段階目まで完了済
This commit is contained in:
200
src/com/rhizome/example/dao/DepartmentDAO.java
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200
src/com/rhizome/example/dao/DepartmentDAO.java
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package com.rhizome.example.dao;
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import java.sql.Connection;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Scanner;
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import com.rhizome.example.dto.DepartmentDTO;
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import com.rhizome.example.util.DbUtil;
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public class DepartmentDAO {
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private static final String TBL_NAME = "department";
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private static final String ID_DEPARTMENT = "id_department";
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private static final String NM_DEPARTMENT = "nm_department";
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/** DBコネクション */
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public Connection con;
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/** DBステートメント */
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PreparedStatement stmt;
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/** 検索結果 */
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ResultSet rs;
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/**
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* インスタンス生成時DBコネクション
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*
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* @throws ClassNotFoundException
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* @throws SQLException
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*/
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public DepartmentDAO(Connection con) {
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this.con = con;
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}
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/**
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* 部署テーブルの情報を全件取得する
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*
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* @return 検索結果
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* @throws SQLException
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* @throws ClassNotFoundException
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*/
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public List<DepartmentDTO> selectAll() throws SQLException, ClassNotFoundException {
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List<DepartmentDTO> rtnList = new ArrayList<>();
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StringBuilder sql = new StringBuilder();
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sql.append(" SELECT ");
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sql.append(" " + "*");
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sql.append(" FROM ");
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sql.append(" " + TBL_NAME);
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try {
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this.stmt = con.prepareStatement(sql.toString());
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rs = stmt.executeQuery();
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while (rs.next()) {
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DepartmentDTO Department = new DepartmentDTO();
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Department.setIdDepartment(rs.getInt(ID_DEPARTMENT));
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Department.setNmDepartment(rs.getString(NM_DEPARTMENT));
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rtnList.add(Department);
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}
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} finally {
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DbUtil.closeStatement(this.stmt);
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}
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return rtnList;
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}
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/**
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* 部署テーブルから指定された部署IDに一致するデータを全件取得する
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*
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* @return 検索結果
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* @throws SQLException
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* @throws ClassNotFoundException
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*/
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public List<DepartmentDTO> selectById(int idDepartment) throws SQLException, ClassNotFoundException {
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List<DepartmentDTO> rtnList = new ArrayList<>();
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StringBuilder sql = new StringBuilder();
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sql.append(" SELECT ");
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sql.append(" " + "*");
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sql.append(" FROM ");
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sql.append(" " + TBL_NAME);
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sql.append(" WHERE ");
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sql.append(" " + ID_DEPARTMENT + " = " + "?");
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try {
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this.stmt = con.prepareStatement(sql.toString());
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stmt.setInt(1,idDepartment);
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rs = stmt.executeQuery();
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int nRecords = 0;
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while (rs.next()) {
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DepartmentDTO Department = new DepartmentDTO();
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Department.setIdDepartment(rs.getInt(ID_DEPARTMENT));
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Department.setNmDepartment(rs.getString(NM_DEPARTMENT));
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rtnList.add(Department);
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nRecords++;
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}
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if (nRecords==0) {
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System.out.println("入力された値で情報がみつかりませんでした");
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}
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} finally {
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DbUtil.closeStatement(this.stmt);
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}
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return rtnList;
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}
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/**
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* 部署テーブルから指定された部署IDに一致する部署名を取得する
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*
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* @return 部署名
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* @throws SQLException
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* @throws ClassNotFoundException
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*/
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public String getNmDepartment(int idDepartment) throws SQLException, ClassNotFoundException {
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String name = Integer.toString(idDepartment); // 部署名が見つからない場合は部署IDを返却する
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Connection con = DbUtil.getConnection();
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DepartmentDAO depDao = new DepartmentDAO(con);
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if(depDao.selectById(idDepartment).size()!=0) {
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DepartmentDTO department = depDao.selectById(idDepartment).get(0);
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name = department.getNmDepartment();
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};
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return name;
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}
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/**
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* 部署テーブルから指定された部署IDに一致するデータを削除する
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*
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* @throws SQLException
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* @throws ClassNotFoundException
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*/
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public void depDelete(int idDepartment) throws SQLException, ClassNotFoundException {
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if (selectById(idDepartment).size()!=0) {
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StringBuilder sql = new StringBuilder();
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sql.append(" DELETE FROM ");
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sql.append(" " + TBL_NAME);
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sql.append(" WHERE ");
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sql.append(" " + ID_DEPARTMENT + " = " + "?");
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System.out.println("指定されたIDの情報を削除しますか？ Y/y");
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System.out.println("（Y/y以外の入力であればキャンセル）");
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Scanner sc = new Scanner(System.in);
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String flag = sc.nextLine();
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if (flag.equals("Y")||flag.equals("y")) {
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try {
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this.stmt = con.prepareStatement(sql.toString());
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stmt.setInt(1,idDepartment);
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stmt.executeUpdate();
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System.out.println("削除が完了しました");
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} finally {
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DbUtil.closeStatement(this.stmt);
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}
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}
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}
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}
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/**
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* 部署テーブルに指定された情報を新規登録する
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*
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* @throws SQLException
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* @throws ClassNotFoundException
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*/
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public void depInsert(String name) throws SQLException, ClassNotFoundException {
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StringBuilder sql = new StringBuilder();
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sql.append(" INSERT INTO ");
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sql.append(" " + TBL_NAME);
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sql.append(" ("+NM_DEPARTMENT+") ");
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sql.append(" VALUES ");
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sql.append(" ( ? ) ");
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try {
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this.stmt = con.prepareStatement(sql.toString());
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stmt.setString(1,name);
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stmt.executeUpdate();
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System.out.println("登録が完了しました");
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} finally {
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DbUtil.closeStatement(this.stmt);
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}
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}
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/**
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* 部署テーブルの指定された部署IDに一致するデータを引数の内容に更新する
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*
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* @throws SQLException
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* @throws ClassNotFoundException
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*/
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public void depUpdate(int idDepartment, String name) throws SQLException, ClassNotFoundException {
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if (selectById(idDepartment).size()!=0) {
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StringBuilder sql = new StringBuilder();
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sql.append(" UPDATE ");
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sql.append(" " + TBL_NAME);
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sql.append(" SET ");
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sql.append(" "+NM_DEPARTMENT+" = ?"+" ");
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sql.append(" WHERE ");
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sql.append(" " + ID_DEPARTMENT + " = " + "?");
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try {
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this.stmt = con.prepareStatement(sql.toString());
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stmt.setString(1,name);
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stmt.setInt(2,idDepartment);
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stmt.executeUpdate();
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System.out.println("更新が完了しました");
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} finally {
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DbUtil.closeStatement(this.stmt);
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}
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}
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}
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}
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27
src/com/rhizome/example/dto/DepartmentDTO.java
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27
src/com/rhizome/example/dto/DepartmentDTO.java
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@@ -0,0 +1,27 @@
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package com.rhizome.example.dto;
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public class DepartmentDTO {
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private int idDepartment;
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private String nmDepartment;
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public int getIdDepartment() {
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return idDepartment;
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}
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public void setIdDepartment(int idDepartment) {
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this.idDepartment = idDepartment;
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}
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public String getNmDepartment() {
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return nmDepartment;
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}
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public void setNmDepartment(String nmDepartment) {
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this.nmDepartment = nmDepartment;
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}
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@Override
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public String toString() {
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return this.getIdDepartment() + " "
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+this.getNmDepartment();
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}
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}
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406
src/com/rhizome/example/main/MainNew.java
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406
src/com/rhizome/example/main/MainNew.java
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@@ -0,0 +1,406 @@
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package com.rhizome.example.main;
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import java.sql.Connection;
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import java.sql.SQLException;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Scanner;
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import com.rhizome.example.dao.DepartmentDAO;
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import com.rhizome.example.dao.EmployeeDAO;
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import com.rhizome.example.dto.DepartmentDTO;
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import com.rhizome.example.dto.EmployeeDTO;
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import com.rhizome.example.util.DbUtil;
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/**
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* @author IT-College
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* @version 1.0
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*/
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public class MainNew {
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static Scanner sc = new Scanner(System.in);
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/**
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* テーブル切り替え用変数 0：Employeeテーブル 1：Departmentテーブル
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*/
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static int tblFlg = 0;
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/**
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* 処理開始位置
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*
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* @param args
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*/
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public static void main(String[] args) {
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System.out.println("システムを開始します");
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while (true) {
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try {
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new MainNew().start();
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} catch (Exception e) {
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System.out.println("予期せぬエラーが発生しました");
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e.printStackTrace();
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}
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}
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}
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/**
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* 処理選択を行う
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*
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* @throws ClassNotFoundException
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* @throws SQLException
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*/
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public void start() throws ClassNotFoundException, SQLException {
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System.out.println();
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System.out.println("現在のメンテナンス対象テーブル：" + targetTableName(tblFlg));
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System.out.println("1:検索 2:登録 3:更新 4:削除 9:テーブル切替 0:終了");
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String ope = sc.nextLine();
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switch (ope) {
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case "1":
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Select(tblFlg);
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break;
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case "2":
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Insert(tblFlg);
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break;
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case "3":
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Update(tblFlg);
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break;
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case "4":
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Delete(tblFlg);
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break;
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case "9":
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tblFlg = ChangeTable(tblFlg);
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break;
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case "0":
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System.out.println("システムを終了します");
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System.exit(0);
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default:
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System.out.println("指定の番号を入力してください");
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break;
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}
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}
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/**
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* 社員テーブルから情報を検索する
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*
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* @throws ClassNotFoundException
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* @throws SQLException
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*/
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public static void empSelect() throws ClassNotFoundException, SQLException {
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List<EmployeeDTO> empList = new ArrayList<>();
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Connection con = DbUtil.getConnection();
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EmployeeDAO empDao = new EmployeeDAO(con);
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System.out.println("1:全検索 2:条件検索 それ以外:戻る");
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String select = sc.nextLine();
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try {
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switch (select) {
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case "1":
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empList = empDao.selectAll();
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break;
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case "2":
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empList = empDao.selectById(Integer.parseInt(inputCheck("社員ID", true)));
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break;
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default:
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return;
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}
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for (EmployeeDTO emp : empList) {
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System.out.println(emp);
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//System.out.println(toStringEmployee(emp)); // 出力文字調整：ongoing
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}
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} finally {
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DbUtil.closeConnection(empDao.con);
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}
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}
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/**
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* 部署テーブルから情報を検索する
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*
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* @throws ClassNotFoundException
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* @throws SQLException
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*/
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public static void depSelect() throws ClassNotFoundException, SQLException {
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List<DepartmentDTO> depList = new ArrayList<>();
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Connection con = DbUtil.getConnection();
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DepartmentDAO depDao = new DepartmentDAO(con);
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System.out.println("1:全検索 2:条件検索 それ以外:戻る");
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String select = sc.nextLine();
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try {
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switch (select) {
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case "1":
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depList = depDao.selectAll();
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break;
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case "2":
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depList = depDao.selectById(Integer.parseInt(inputCheck("部署ID", true)));
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break;
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default:
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return;
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}
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for (DepartmentDTO dep : depList) {
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System.out.println(dep);
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//System.out.println(toStringDepartment(dep)); // 出力文字調整：ongoing
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}
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} finally {
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DbUtil.closeConnection(depDao.con);
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}
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}
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/**
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* フラグを判定し、テーブル名を取得する
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*
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* @param tblFlg
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* テーブル名判定用フラグ
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* @return テーブル名
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*/
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public static String targetTableName(int tblFlg) {
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String rtnTblName = "";
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if (tblFlg == 0) {
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rtnTblName = "社員テーブル";
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} else {
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rtnTblName = "部署テーブル";
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}
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return rtnTblName;
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}
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/**
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* フラグを判定し、検索機能を呼び出す
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*
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* @param tblFlg
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* テーブル名判定用フラグ
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* @throws ClassNotFoundException
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* @throws SQLException
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*/
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public static void Select(int tblFlg) throws ClassNotFoundException, SQLException {
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if (tblFlg == 0) {
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empSelect();
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} else {
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depSelect();
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}
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}
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/**
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* フラグを判定し、登録機能を呼び出す
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*
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* @param tblFlg
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* テーブル名判定用フラグ
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* @throws ClassNotFoundException
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* @throws SQLException
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*/
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public static void Insert(int tblFlg) throws ClassNotFoundException, SQLException {
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Connection con = DbUtil.getConnection();
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if (tblFlg == 0) {
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EmployeeDAO empDao = new EmployeeDAO(con);
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empDao.empInsert(inputCheck("社員名", false),
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inputCheck("フリガナ", false),
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inputCheck("メールアドレス", false),
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inputCheck("パスワード", false),
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inputCheckIdDepartmentRep()); // 部署IDと照合できるまで入力を受け付ける
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} else {
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DepartmentDAO depDao = new DepartmentDAO(con);
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depDao.depInsert(inputCheck("部署名", false));
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}
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}
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/**
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* フラグを判定し、更新機能を呼び出す
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*
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* @param tblFlg
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* テーブル名判定用フラグ
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* @throws ClassNotFoundException
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* @throws SQLException
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*/
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public static void Update(int tblFlg) throws ClassNotFoundException, SQLException {
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Connection con = DbUtil.getConnection();
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if (tblFlg == 0) {
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EmployeeDAO empDao = new EmployeeDAO(con);
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int id = Integer.parseInt(inputCheck("社員ID", true));
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if (empDao.selectById(id).size()==0) {} // 社員IDの照合に失敗した場合は更新処理を行わない
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else {
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empDao.empUpdate(id,
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inputCheck("社員名", false),
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inputCheck("フリガナ", false),
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inputCheck("メールアドレス", false),
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inputCheck("パスワード", false),
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inputCheckIdDepartmentRep()); // 部署IDと照合できるまで入力を受け付ける
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}
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} else {
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DepartmentDAO depDao = new DepartmentDAO(con);
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int id = Integer.parseInt(inputCheck("部署ID", true));
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if (depDao.selectById(id).size()==0) {} // 部署IDの照合に失敗した場合は更新処理を行わない
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else {
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depDao.depUpdate(id,
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inputCheck("部署名", false));
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}
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}
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}
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/**
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* フラグを判定し、削除機能を呼び出す
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*
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* @param tblFlg
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* テーブル名判定用フラグ
|
||||
* @throws ClassNotFoundException
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||||
* @throws SQLException
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||||
*/
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public static void Delete(int tblFlg) throws ClassNotFoundException, SQLException {
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Connection con = DbUtil.getConnection();
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if (tblFlg == 0) {
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EmployeeDAO empDao = new EmployeeDAO(con);
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empDao.empDelete(Integer.parseInt(inputCheck("社員ID", true))); // 社員IDの照合に失敗した場合は削除処理を行わない
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} else {
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DepartmentDAO depDao = new DepartmentDAO(con);
|
||||
depDao.depDelete(Integer.parseInt(inputCheck("部署ID", true))); // 部署IDの照合に失敗した場合は削除処理を行わない
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* テーブルを切り替える
|
||||
*
|
||||
* @param tblFlg
|
||||
* テーブル名判定用フラグ
|
||||
* @return 変更後フラグ
|
||||
*/
|
||||
public static int ChangeTable(int tblFlg) {
|
||||
if (tblFlg == 0) {
|
||||
tblFlg = 1;
|
||||
} else {
|
||||
tblFlg = 0;
|
||||
}
|
||||
return tblFlg;
|
||||
}
|
||||
|
||||
/**
|
||||
* 入力値を判定し、返却する
|
||||
*
|
||||
* @param titleName
|
||||
* 入力項目名
|
||||
* @param flg
|
||||
* 数値チェック可否フラグ
|
||||
* @return
|
||||
*/
|
||||
public static String inputCheck(String titleName, boolean flg) {
|
||||
String str = null;
|
||||
while (true) {
|
||||
System.out.println(titleName + "を入力してください");
|
||||
str = sc.nextLine();
|
||||
if (str.trim().length() == 0) {
|
||||
System.out.println(titleName + "は入力必須です。");
|
||||
continue;
|
||||
}
|
||||
if (flg) {
|
||||
if (str.trim().length() > 0) {
|
||||
try {
|
||||
Integer.parseInt(str);
|
||||
} catch (NumberFormatException e) {
|
||||
System.out.println(titleName + "は数値入力です");
|
||||
continue;
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
return str;
|
||||
}
|
||||
|
||||
/**
|
||||
* 入力値と社員IDを照合し、返却する（照合できるまで入力を受け付ける）
|
||||
*
|
||||
* @throws ClassNotFoundException
|
||||
* @throws SQLException
|
||||
* @return
|
||||
*/
|
||||
public static int inputCheckIdEmployeeRep() throws ClassNotFoundException, SQLException {
|
||||
int id;
|
||||
Connection con = DbUtil.getConnection();
|
||||
EmployeeDAO empDao = new EmployeeDAO(con);
|
||||
while (true) {
|
||||
id = Integer.parseInt(inputCheck("社員ID", true));
|
||||
if (empDao.selectById(id).size()!=0) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
return id;
|
||||
}
|
||||
|
||||
/**
|
||||
* 入力値と部署IDを照合し、返却する（照合できるまで入力を受け付ける）
|
||||
*
|
||||
* @throws ClassNotFoundException
|
||||
* @throws SQLException
|
||||
* @return
|
||||
*/
|
||||
public static int inputCheckIdDepartmentRep() throws ClassNotFoundException, SQLException {
|
||||
int id;
|
||||
Connection con = DbUtil.getConnection();
|
||||
DepartmentDAO depDao = new DepartmentDAO(con);
|
||||
while (true) {
|
||||
id = Integer.parseInt(inputCheck("部署ID", true));
|
||||
if (depDao.selectById(id).size()!=0) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
return id;
|
||||
}
|
||||
|
||||
/**
|
||||
* 社員テーブルの出力文字列を生成する
|
||||
* ・縦の線が揃うように位置を調整する
|
||||
* ・部署IDを部署名に変更する
|
||||
*
|
||||
* @throws ClassNotFoundException
|
||||
* @throws SQLException
|
||||
* @return 出力文字列
|
||||
*/
|
||||
public static String toStringEmployee(EmployeeDTO employee) throws ClassNotFoundException, SQLException {
|
||||
Connection con = DbUtil.getConnection();
|
||||
DepartmentDAO depDao = new DepartmentDAO(con);
|
||||
return fixCharCount(8, employee.getIdEmployee())
|
||||
+fixCharCountFull(8, employee.getNmEmployee())
|
||||
+fixCharCountFull(12, employee.getKnEmployee())
|
||||
+fixCharCount(20, employee.getMailaddress())
|
||||
+fixCharCount(12, employee.getPassword())
|
||||
+fixCharCountFull(8, depDao.getNmDepartment(employee.getIdDepartment()));
|
||||
}
|
||||
|
||||
/**
|
||||
* 部署テーブルの出力文字列を生成する
|
||||
* ・縦の線が揃うように位置を調整する
|
||||
*
|
||||
*
|
||||
* @throws ClassNotFoundException
|
||||
* @throws SQLException
|
||||
* @return 出力文字列
|
||||
*/
|
||||
public static String toStringDepartment(DepartmentDTO department) throws ClassNotFoundException, SQLException {
|
||||
return fixCharCount(8, department.getIdDepartment())
|
||||
+fixCharCountFull(12, department.getNmDepartment());
|
||||
}
|
||||
|
||||
/**
|
||||
* 入力文字列の文字数が一定になるように空白を追加する（半角文字／数字／全角文字）
|
||||
*
|
||||
* @return
|
||||
*/
|
||||
public static String fixCharCount(int nChars, String input) {
|
||||
if (nChars-input.length()>=0) {
|
||||
for (int i=0; i<nChars-input.length(); i++) {
|
||||
input = input + " ";
|
||||
}
|
||||
}
|
||||
return input;
|
||||
}
|
||||
public static String fixCharCount(int nChars, int id) {
|
||||
String input = Integer.toString(id);
|
||||
if (nChars-input.length()>=0) {
|
||||
for (int i=0; i<nChars-input.length(); i++) {
|
||||
input = input + " ";
|
||||
}
|
||||
}
|
||||
return input;
|
||||
}
|
||||
public static String fixCharCountFull(int nChars, String input) {
|
||||
if (nChars-input.length()>=0) {
|
||||
System.out.println(nChars-input.length());
|
||||
for (int i=0; i<nChars-input.length(); i++) {
|
||||
input = input + " ";
|
||||
}
|
||||
}
|
||||
return input;
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user