2段階目終了

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

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+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;
+
+@Service
+@Transactional
+public class DeleteDepartmentImpl implements DeleteDepartment {
+
+	DepartmentRepository departmentRepository;
+	@Autowired
+	public DeleteDepartmentImpl(DepartmentRepository departmentRepository) {
+		this.departmentRepository = departmentRepository;
+	}
+	
+	
+	public void deleteDepartment(Integer idDepartment) {
+		departmentRepository.deleteById(idDepartment);
+
+	}
+
+}

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

@@ -0,0 +1,127 @@
+package com.example.rhizome.app.presentation.controller;
+
+import java.util.List;
+import java.util.Objects;
+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.EmployeeInfo;
+import com.example.rhizome.app.domain.model.LoginUser;
+import com.example.rhizome.app.domain.model.SearchConditionEmployee;
+import com.example.rhizome.app.domain.service.DeleteDepartment;
+import com.example.rhizome.app.domain.service.SearchDepartment;
+import com.example.rhizome.app.domain.service.SearchEmployeeInfo;
+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;
+import com.example.rhizome.app.presentation.form.SearchConditionDepartmentForm;
+
+@Controller
+public class DeleteDepartmentController {
+
+	private final static Logger LOGGER = Logger.getLogger(DeleteDepartmentController.class.getName());
+	private final static String SEVERE_ERROR_MESSAGE = "エラーが発生しました！";
+
+	private final HttpSession httpSession;
+	private final DeleteDepartment deleteDepartment;
+	private final SearchDepartment searchDepartment;
+	private final SearchEmployeeInfo searchEmployeeInfo;
+
+	@Autowired
+	public DeleteDepartmentController(DeleteDepartment deleteDepartment, SearchDepartment searchDepartment,
+			SearchEmployeeInfo searchEmployeeInfo, HttpSession httpSession) {
+		this.httpSession = httpSession;
+		this.deleteDepartment = deleteDepartment;
+		this.searchDepartment = searchDepartment;
+		this.searchEmployeeInfo = searchEmployeeInfo;
+	}
+
+	@PermissionCheck
+	@SessionCheck
+	@RequestMapping(value = "/deleteDepartment", method = RequestMethod.POST)
+	public String deleteDepartment(@RequestParam(value = "idDepartment", required = false) Integer idDepartment,
+			Model model) {
+
+		try {
+			// 削除対象の部署IDが存在しない場合
+			if (idDepartment == null) {
+				model.addAttribute(PageReturnAttributeKeyword.MESSAGE_ERROR, new MessageForm("削除対象のIDが不明です。"));
+				model.addAttribute(PageReturnAttributeKeyword.DEPARTMENT_FORM_LIST,
+						DepartmentForm.convertFrom(searchDepartment.selectAll()));
+				return TransitionTargetPageNameKeyword.SELECT_DEPARTMENT_HTML;
+			}
+
+			// ログインユーザー情報を取得
+			LoginUser loginUser = LoginUserForm
+					.convertTo((LoginUserForm) httpSession.getAttribute(SessionKeyword.LOGIN_USER));
+
+			// 削除バリデーションと削除の実行
+			deleteExec(model, idDepartment, loginUser);
+
+			// 最新の部署一覧を再取得してセット
+			model.addAttribute(
+					PageReturnAttributeKeyword.DEPARTMENT_FORM_LIST,
+					DepartmentForm.convertFrom(searchDepartment.selectAll()));
+			
+			model.addAttribute("searchConditionDepartmentForm", new SearchConditionDepartmentForm());
+
+			return TransitionTargetPageNameKeyword.SELECT_DEPARTMENT_HTML;
+
+		} catch (Exception e) {
+			httpSession.invalidate();
+			e.printStackTrace();
+			LOGGER.log(Level.SEVERE, SEVERE_ERROR_MESSAGE, e);
+			return TransitionTargetPageNameKeyword.ERROR_HTML;
+		}
+	}
+
+	private boolean deleteExec(Model model, Integer idDepartment, LoginUser loginUser) {
+		final String DELETE_TARGET_ID_CAN_NOT_DELETE = "ログイン者自身は削除出来ません。";
+		final String BELONG_EMPLOYEE_EXIST_ERROR = "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。";
+
+		// ログイン者自身の部署削除ブロック
+		if (loginUser != null && Objects.equals(loginUser.getIdDepartment(), idDepartment)) {
+			model.addAttribute(PageReturnAttributeKeyword.MESSAGE_ERROR,
+					new MessageForm(DELETE_TARGET_ID_CAN_NOT_DELETE));
+			return false;
+		}
+
+		SearchConditionEmployee searchCondition = new SearchConditionEmployee(
+				null,
+				null,
+				null,
+				null,
+				idDepartment);
+
+		// 社員検索サービスを呼び出す
+		List<EmployeeInfo> employeeList = searchEmployeeInfo.searchBy(searchCondition);
+
+		// 1件以上レコードが返ってきた（所属社員がいた）場合は削除を中断
+		if (employeeList != null && !employeeList.isEmpty()) {
+			model.addAttribute(PageReturnAttributeKeyword.MESSAGE_ERROR, new MessageForm(BELONG_EMPLOYEE_EXIST_ERROR));
+			return false;
+		}
+
+		// すべてのバリデーションチェックを通過したら削除を実施
+		deleteDepartment.deleteDepartment(idDepartment);
+
+		// 削除完了メッセージをセット（画面側のアラートボックスと連動）
+		model.addAttribute(PageReturnAttributeKeyword.MESSAGE_INFO, new MessageForm(DELETE_COMPLETE));
+		return true;
+	}
+}