[EDIT]部署削除機能の実施

src/main/java/com/example/rhizome/app/domain/service/DeleteDepartment.java

@@ -0,0 +1,5 @@
+package com.example.rhizome.app.domain.service;
+
+public interface DeleteDepartment {
+	void deleteDepartment(Integer idDepartment);
+}

src/main/java/com/example/rhizome/app/domain/service/impl/DeleteDepartmentImpl.java

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+package com.example.rhizome.app.domain.service.impl;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.example.rhizome.app.domain.service.DeleteDepartment;
+import com.example.rhizome.app.infra.repository.DepartmentRepository;
+
+/**
+ * Employee レコード削除関連の機能を持つサービス
+ */
+@Service
+@Transactional
+public class DeleteDepartmentImpl implements DeleteDepartment {
+
+    DepartmentRepository departmentRepository;
+
+    @Autowired
+    public DeleteDepartmentImpl(DepartmentRepository departmentRepository) {
+        this.departmentRepository = departmentRepository;
+    }
+
+
+    /**
+     * idDepartment を元に department データを削除
+     *
+     * @param idDepartment 削除対象のidDepartment
+     */
+    public void deleteDepartment(Integer idDepartment) {
+        departmentRepository.deleteById(idDepartment);
+    }
+
+}

src/main/java/com/example/rhizome/app/presentation/controller/DeleteDepartmentController.java

@@ -0,0 +1,131 @@
+package com.example.rhizome.app.presentation.controller;
+
+
+import static com.example.rhizome.app.presentation.controller.pageproperty.TransitionTargetPageNameKeyword.*;
+
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import javax.servlet.http.HttpSession;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import com.example.rhizome.aop.aspect.PermissionCheck;
+import com.example.rhizome.aop.aspect.SessionCheck;
+import com.example.rhizome.app.domain.model.Employee;
+import com.example.rhizome.app.domain.model.LoginUser;
+import com.example.rhizome.app.domain.service.DeleteDepartment;
+import com.example.rhizome.app.domain.service.SearchDepartment;
+import com.example.rhizome.app.domain.service.SearchEmployee;
+import com.example.rhizome.app.presentation.controller.pageproperty.PageReturnAttributeKeyword;
+import com.example.rhizome.app.presentation.controller.pageproperty.SessionKeyword;
+import com.example.rhizome.app.presentation.controller.pageproperty.TransitionTargetPageNameKeyword;
+import com.example.rhizome.app.presentation.form.DepartmentForm;
+import com.example.rhizome.app.presentation.form.LoginUserForm;
+import com.example.rhizome.app.presentation.form.MessageForm;;
+
+/**
+ * 削除処理のコントロータ
+ */
+@Controller
+public class DeleteDepartmentController {
+
+    // ログ出力用インスタンス
+    private final static Logger LOGGER = Logger.getLogger(DeleteDepartmentController.class.getName());
+
+    // エラーメッセージ用の定数フィールド
+    private final static String SEVERE_ERROR_MESSAGE = "エラーが発生しました！";
+
+    HttpSession httpSession;
+    DeleteDepartment deleteDepartment;
+    SearchDepartment searchDepartment;
+    SearchEmployee searchEmployee;
+
+    @Autowired
+    public DeleteDepartmentController(DeleteDepartment deleteDepartment, SearchDepartment searchDepartment, HttpSession httpSession, SearchEmployee searchEmployee) {
+        this.httpSession = httpSession;
+        this.deleteDepartment = deleteDepartment;
+        this.searchDepartment = searchDepartment;
+        this.searchEmployee = searchEmployee;
+    }
+
+    /**
+     * 削除処理のコントローラ
+     *
+     * @param idDepartment 削除対象のdepartmentId
+     * @param model      ビューにデータを渡すためのコンテナ
+     * @return 遷移先の画面
+     */
+    @PermissionCheck
+    @SessionCheck
+    @RequestMapping(value = DELETE_DEPARTMENT, method = RequestMethod.POST)
+    public String deleteDepartment(@RequestParam("idDepartment") Integer idDepartment, Model model) {
+
+        try {
+            // 部署一覧を取得し、画面に返す用のクラスに詰め替える
+            // 作成した部署一覧をセット
+            model.addAttribute(
+                    PageReturnAttributeKeyword.DEPARTMENT_FORM_LIST,
+                    DepartmentForm.convertFrom(searchDepartment.selectAll())
+            );
+
+            // 削除処理実施
+            deleteExec(
+                    model,
+                    idDepartment,
+                    LoginUserForm.convertTo((LoginUserForm) httpSession.getAttribute(SessionKeyword.LOGIN_USER)));
+
+            // 検索画面に遷移
+            return "forward:" + TransitionTargetPageNameKeyword.SELECT_DEPARTMENT_INFO_FORM_EMPTY;
+
+        } catch (Exception e) {
+            // ログイン情報の破棄
+            httpSession.invalidate();
+
+            e.printStackTrace();
+            // エラーログ出力
+            LOGGER.log(Level.SEVERE, SEVERE_ERROR_MESSAGE, e);
+            // エラー画面遷移
+            return TransitionTargetPageNameKeyword.ERROR_HTML;
+        }
+    }
+
+    /**
+     * 削除処理実施
+     *
+     * @param model      ビューにデータを渡すためのコンテナ
+     * @param idEmployee 削除対象のemployeeId
+     * @param loginUser  ログインユーザー情報
+     */
+    private void deleteExec(Model model, Integer idDepartment, LoginUser loginUser) {
+
+        final String DELETE_TARGET_ID_CAN_NOT_DELETE = "1名以上が所属している部署は削除出来ません。";
+        final String DELETE_COMPLETE = "削除しました。";
+
+        List<Employee> employeeList =
+                searchEmployee.searchEmployeeByIdDepartment(idDepartment);
+
+        if (!employeeList.isEmpty()) {
+
+            model.addAttribute(
+                PageReturnAttributeKeyword.MESSAGE_ERROR,
+                new MessageForm(DELETE_TARGET_ID_CAN_NOT_DELETE)
+            );
+
+            return;
+        }
+
+        // 削除を実施
+        deleteDepartment.deleteDepartment(idDepartment);
+
+        // 削除完了したメッセージをセット
+        model.addAttribute(PageReturnAttributeKeyword.MESSAGE_INFO, new MessageForm(DELETE_COMPLETE));
+
+    }
+}