src/main/java/com/primefactorsolutions/repositories/TimeOffRequestRepository.java

@@ -1,11 +1,14 @@
 package com.primefactorsolutions.repositories;
 
 import com.primefactorsolutions.model.TimeOffRequest;
+import com.primefactorsolutions.model.TimeOffRequestStatus;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import java.util.List;
+import java.util.Optional;
 import java.util.UUID;
 
 public interface TimeOffRequestRepository extends JpaRepository<TimeOffRequest, UUID> {
     List<TimeOffRequest> findByEmployeeId(UUID idEmployee);
+    Optional<TimeOffRequest> findByEmployeeIdAndState(UUID employeeId, TimeOffRequestStatus state);
 }

src/main/java/com/primefactorsolutions/service/TimeOffRequestService.java

@@ -34,4 +34,8 @@ public class TimeOffRequestService {
     public List<TimeOffRequest> findRequestsByEmployeeId(final UUID idEmployee) {
         return timeOffRequestRepository.findByEmployeeId(idEmployee);
     }
+
+    public Optional<TimeOffRequest> findByEmployeeAndState(final UUID employeeId, final TimeOffRequestStatus state) {
+        return timeOffRequestRepository.findByEmployeeIdAndState(employeeId, state);
+    }
 }

src/main/java/com/primefactorsolutions/views/RequestView.java

@@ -111,11 +111,11 @@ public class RequestView extends BeanValidationForm<TimeOffRequest> implements H
             setRequestFieldValues(request);
             requestService.saveTimeOffRequest(request);
             Notification.show("Request saved successfully.");
-            clearForm();
+            closeForm();
         }
     }
 
-    private void setRequestFieldValues(TimeOffRequest request) {
+    private void setRequestFieldValues(final TimeOffRequest request) {
         request.setState(state.getValue());
         request.setExpiration(expiration.getValue());
         request.setStartDate(startDate.getValue());
@@ -137,15 +137,6 @@ public class RequestView extends BeanValidationForm<TimeOffRequest> implements H
                 && daysToBeTake.getValue() != null;
     }
 
-    private void clearForm() {
-        state.clear();
-        expiration.clear();
-        startDate.clear();
-        endDate.clear();
-        availableDays.clear();
-        daysToBeTake.clear();
-    }
-
     private void configureViewOrEditAction(final String action) {
         if ("edit".equals(action) && !request.getId().toString().isEmpty()) {
             setFieldsReadOnly(false);

src/main/java/com/primefactorsolutions/views/RequestsListView.java

@@ -7,7 +7,6 @@ import com.primefactorsolutions.service.TimeOffRequestService;
 import com.vaadin.flow.component.button.Button;
 import com.vaadin.flow.component.combobox.ComboBox;
 import com.vaadin.flow.component.html.Main;
-import com.vaadin.flow.component.html.Span;
 import com.vaadin.flow.component.notification.Notification;
 import com.vaadin.flow.component.orderedlayout.HorizontalLayout;
 import com.vaadin.flow.router.PageTitle;
@@ -17,9 +16,7 @@ import jakarta.annotation.security.PermitAll;
 import org.springframework.context.annotation.Scope;
 import org.vaadin.firitin.components.grid.PagingGrid;
 
-import java.util.Collections;
+import java.util.*;
-import java.util.List;
-import java.util.UUID;
 import java.util.stream.Collectors;
 
 @SpringComponent
@@ -32,23 +29,25 @@ public class RequestsListView extends Main {
     private final TimeOffRequestService requestService;
     private final EmployeeService employeeService;
     private final TeamService teamService;
-    private final PagingGrid<TimeOffRequest> requestGrid = new PagingGrid<>(TimeOffRequest.class);
+    private final PagingGrid<Employee> requestGrid = new PagingGrid<>();
-    private List<TimeOffRequest> requests = Collections.emptyList();
+
+    private List<Employee> employees = Collections.emptyList();
     private ComboBox<Employee> employeeFilter;
     private ComboBox<Team> teamFilter;
     private ComboBox<TimeOffRequestType> categoryFilter;
-    private ComboBox<TimeOffRequestStatus> stateFilter;
+    private ComboBox<Status> stateFilter;
     private UUID selectedEmployeeId;
 
+
     public RequestsListView(final TimeOffRequestService requestService,
                             final EmployeeService employeeService,
                             final TeamService teamService) {
         this.requestService = requestService;
         this.employeeService = employeeService;
         this.teamService = teamService;
-        this.requests = requestService.findAllTimeOffRequests();
+        this.employees = employeeService.findAllEmployees();
         initializeView();
-        refreshRequestGrid(null, null, null, null);
+        refreshGeneralRequestGrid(null, null, null, null);
     }
 
     private void initializeView() {
@@ -66,24 +65,20 @@ public class RequestsListView extends Main {
     }
 
     private void setupRequestGrid() {
-        requestGrid.setColumns(
+        requestGrid.addColumn(this::getEmployeeFullName).setHeader("Employee");
-                "category",
+        requestGrid.addColumn(this::getTeamName).setHeader("Team");
-                "state",
+        requestGrid.addColumn(this::getEmployeeStatus).setHeader("State");
-                "availableDays",
+        requestGrid.addColumn(this::getCategory).setHeader("Category");
-                "expiration",
+        requestGrid.addColumn(this::getStartDate).setHeader("Start Date");
-                "startDate",
+        requestGrid.addColumn(this::getEndDate).setHeader("End Date");
-                "endDate",
+        requestGrid.addColumn(this::getDaysBalance).setHeader("Days Balance");
-                "daysToBeTake",
+
-                "daysBalance"
-        );
-        requestGrid.addComponentColumn(this::createEmployeeSpan).setHeader("Employee");
-        requestGrid.addComponentColumn(this::createTeamSpan).setHeader("Team");
         requestGrid.setPaginationBarMode(PagingGrid.PaginationBarMode.BOTTOM);
         requestGrid.setPageSize(5);
         requestGrid.asSingleSelect().addValueChangeListener(event -> {
-            TimeOffRequest selectedRequest = event.getValue();
+            Employee selectedRequest = event.getValue();
             if (selectedRequest != null) {
-                selectedEmployeeId = selectedRequest.getEmployee().getId();
+                selectedEmployeeId = selectedRequest.getId();
             }
         });
     }
@@ -100,90 +95,114 @@ public class RequestsListView extends Main {
         return new HorizontalLayout(viewButton, closeButton);
     }
 
-    private void refreshRequestGrid(final Employee employee,
+    private void refreshGeneralRequestGrid(final Employee employee,
                                            final Team team,
                                            final TimeOffRequestType category,
-                                    final TimeOffRequestStatus state) {
+                                           final Status state) {
-
         requestGrid.setPagingDataProvider((page, pageSize) -> {
-            requests = requestService.findAllTimeOffRequests();
             int start = (int) (page * requestGrid.getPageSize());
-            if (allFiltersAreNull(employee, team, category, state)) {
+            return fetchFilteredEmployees(start, pageSize, employee, team, category, state);
-                return fetchTimeOffRequests(start, pageSize);
-            } else {
-                return fetchFilteredTimeOffRequests(start, pageSize, employee, team,  category, state);
-            }
         });
         requestGrid.getDataProvider().refreshAll();
     }
 
-    private boolean allFiltersAreNull(final Employee employee,
+    private List<Employee> fetchFilteredEmployees(final int start,
-                                      final Team team,
-                                      final TimeOffRequestType category,
-                                      final TimeOffRequestStatus state) {
-        return employee == null && team == null && category == null && state == null;
-    }
-
-    private List<TimeOffRequest> fetchTimeOffRequests(final int start, final int pageSize) {
-        int end = start + pageSize;
-        if (end > requests.size()) {
-            end = requests.size();
-        }
-        return requests.subList(start, end);
-    }
-
-    private List<TimeOffRequest> fetchFilteredTimeOffRequests(final int start,
                                                   final int pageSize,
                                                   final Employee employee,
                                                   final Team team,
                                                   final TimeOffRequestType category,
-                                                              final TimeOffRequestStatus state) {
+                                                  final Status state) {
+        List<Employee> filteredEmployees = employeeService.findAllEmployees();
+
         if (employee != null && !"ALL".equals(employee.getFirstName())) {
-            requests = requests.stream()
+            filteredEmployees = filteredEmployees.stream()
-                    .filter(request -> request.getEmployee().getId().equals(employee.getId()))
+                    .filter(emp -> emp.getId().equals(employee.getId()))
                     .collect(Collectors.toList());
         }
+
         if (team != null && !"ALL".equals(team.getName())) {
-            requests = requests.stream()
+            filteredEmployees = filteredEmployees.stream()
-                    .filter(request -> request.getEmployee().getTeam().getId().equals(team.getId()))
+                    .filter(emp -> emp.getTeam() != null && emp.getTeam().getId().equals(team.getId()))
                     .collect(Collectors.toList());
         }
-        if (category != null && !"ALL".equals(category.name())) {
+
-            requests = requests.stream()
+        if (category != null && category != TimeOffRequestType.values()[0]) {
-                    .filter(request -> request.getCategory().equals(category))
+            filteredEmployees = filteredEmployees.stream()
+                    .filter(emp -> {
+                        Optional<TimeOffRequest> request = requestService
+                                .findByEmployeeAndState(emp.getId(), TimeOffRequestStatus.TAKEN);
+                        return request.isPresent() && request.get().getCategory() == category;
+                    })
                     .collect(Collectors.toList());
         }
-        if (state != null && !"ALL".equals(state.name())) {
+
-            requests = requests.stream()
+        if (state != null && state != Status.ALL) {
-                    .filter(request -> request.getState().equals(state))
+            filteredEmployees = filteredEmployees.stream()
+                    .filter(emp -> {
+                        Optional<TimeOffRequest> request = requestService
+                                .findByEmployeeAndState(emp.getId(), TimeOffRequestStatus.TAKEN);
+                        return state == Status.IDLE ? request.isPresent() : request.isEmpty();
+                    })
                     .collect(Collectors.toList());
         }
-        int end = start + pageSize;
+
-        if (end > requests.size()) {
+        int end = Math.min(start + pageSize, filteredEmployees.size());
-            end = requests.size();
+        return filteredEmployees.subList(start, end);
     }
-        return requests.subList(start, end);
+
+    private String getEmployeeFullName(final Employee employee) {
+        return "ALL".equals(employee.getFirstName()) ? "ALL" : employee.getFirstName() + " " + employee.getLastName();
+    }
+
+    private String getTeamName(final Employee employee) {
+        Team team = employee.getTeam();
+        return team != null ? team.getName() : "Unassigned";
+    }
+
+    private String getTeamLabel(final Team team) {
+        return "ALL".equals(team.getName()) ? "ALL" : team.getName();
     }
 
 
-    private Span createEmployeeSpan(final TimeOffRequest timeOffRequest) {
+    private String getEmployeeStatus(final Employee employee) {
-        Employee employee = timeOffRequest.getEmployee();
+        Optional<TimeOffRequest> activeRequest = requestService
-        return new Span(employee.getFirstName() + " " + employee.getLastName());
+                .findByEmployeeAndState(employee.getId(), TimeOffRequestStatus.TAKEN);
+        return activeRequest.isPresent() ? "IDLE" : "ACTIVE";
     }
 
-    private Span createTeamSpan(final TimeOffRequest timeOffRequest) {
+    private String getCategory(final Employee employee) {
-        return new Span(timeOffRequest.getEmployee().getTeam().getName());
+        Optional<TimeOffRequest> activeRequest = requestService
+                .findByEmployeeAndState(employee.getId(), TimeOffRequestStatus.TAKEN);
+        return activeRequest.map(request -> request.getCategory().toString()).orElse("");
+    }
+
+    private String getStartDate(final Employee employee) {
+        Optional<TimeOffRequest> activeRequest = requestService
+                .findByEmployeeAndState(employee.getId(), TimeOffRequestStatus.TAKEN);
+        return activeRequest.map(request -> request.getStartDate().toString()).orElse("");
+    }
+
+    private String getEndDate(final Employee employee) {
+        Optional<TimeOffRequest> activeRequest = requestService
+                .findByEmployeeAndState(employee.getId(), TimeOffRequestStatus.TAKEN);
+        return activeRequest.map(request -> request.getEndDate().toString()).orElse("");
+    }
+
+    private String getDaysBalance(final Employee employee) {
+        Optional<TimeOffRequest> activeRequest = requestService
+                .findByEmployeeAndState(employee.getId(), TimeOffRequestStatus.TAKEN);
+        return activeRequest.map(request -> request.getDaysBalance().toString()).orElse("");
     }
 
     private ComboBox<Employee> createEmployeeFilter() {
         employeeFilter = new ComboBox<>("Employee");
-        List<Employee> employees = employeeService.findAllEmployees();
+        List<Employee> employees = new ArrayList<>(employeeService.findAllEmployees());
         employees.addFirst(createAllEmployeesOption());
         employeeFilter.setItems(employees);
-        employeeFilter.setItemLabelGenerator(this::getEmployeeLabel);
+        employeeFilter.setItemLabelGenerator(this::getEmployeeFullName);
         employeeFilter.setValue(employees.getFirst());
         employeeFilter.addValueChangeListener(event ->
-                refreshRequestGrid(
+                refreshGeneralRequestGrid(
                         event.getValue(),
                         teamFilter.getValue(),
                         categoryFilter.getValue(),
@@ -195,13 +214,13 @@ public class RequestsListView extends Main {
 
     private ComboBox<Team> createTeamFilter() {
         teamFilter = new ComboBox<>("Team");
-        List<Team> teams = teamService.findAllTeams();
+        List<Team> teams = new ArrayList<>(teamService.findAllTeams());
         teams.addFirst(createAllTeamsOption());
         teamFilter.setItems(teams);
         teamFilter.setItemLabelGenerator(this::getTeamLabel);
         teamFilter.setValue(teams.getFirst());
         teamFilter.addValueChangeListener(event ->
-                refreshRequestGrid(
+                refreshGeneralRequestGrid(
                         employeeFilter.getValue(),
                         event.getValue(),
                         categoryFilter.getValue(),
@@ -216,7 +235,7 @@ public class RequestsListView extends Main {
         categoryFilter.setItems(TimeOffRequestType.values());
         categoryFilter.setValue(TimeOffRequestType.values()[0]);
         categoryFilter.addValueChangeListener(event ->
-                refreshRequestGrid(
+                refreshGeneralRequestGrid(
                         employeeFilter.getValue(),
                         teamFilter.getValue(),
                         event.getValue(),
@@ -226,12 +245,12 @@ public class RequestsListView extends Main {
         return categoryFilter;
     }
 
-    private ComboBox<TimeOffRequestStatus> createStateFilter() {
+    private ComboBox<Status> createStateFilter() {
         stateFilter = new ComboBox<>("State");
-        stateFilter.setItems(TimeOffRequestStatus.values());
+        stateFilter.setItems(Status.values());
-        stateFilter.setValue(TimeOffRequestStatus.values()[0]);
+        stateFilter.setValue(Status.values()[0]);
         stateFilter.addValueChangeListener(event ->
-                refreshRequestGrid(
+                refreshGeneralRequestGrid(
                         employeeFilter.getValue(),
                         teamFilter.getValue(),
                         categoryFilter.getValue(),
@@ -241,6 +260,12 @@ public class RequestsListView extends Main {
         return stateFilter;
     }
 
+    private enum Status {
+        ALL,
+        IDLE,
+        ACTIVE
+    }
+
     private Employee createAllEmployeesOption() {
         Employee allEmployeesOption = new Employee();
         allEmployeesOption.setFirstName("ALL");
@@ -253,14 +278,6 @@ public class RequestsListView extends Main {
         return allTeamsOption;
     }
 
-    private String getEmployeeLabel(final Employee employee) {
-        return "ALL".equals(employee.getFirstName()) ? "ALL" : employee.getFirstName() + " " + employee.getLastName();
-    }
-
-    private String getTeamLabel(final Team team) {
-        return "ALL".equals(team.getName()) ? "ALL" : team.getName();
-    }
-
     private void navigateToMainView() {
         getUI().ifPresent(ui -> ui.navigate(MainView.class));
     }

src/main/resources/data.sql

@@ -43,26 +43,26 @@ values ('2fa314bc-f547-4b12-a8b6-bb789feabc12', 1, '19b5a76e-d7b1-4b76-8b02-4d07
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
 values ('d5f6341a-913d-4e7f-a0b2-cfe0786acd34', 1, 'cba3efb7-32bc-44be-9fdc-fc5e4f211254', 'FIXED_HOLIDAY', 'IN_USE', 20, '2025-11-30', '2024-11-10', '2024-11-20', 10, 10);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
-values ('4f913b23-ff23-4527-bcd6-adfe01234567', 1, 'e99b7af5-7d3a-4c0f-b8bc-e8d0388d8fc4', 'MATERNITY', 'TAKEN', 18, '2025-06-30', '2024-07-01', '2024-07-15', 10, 8);
+values ('4f913b23-ff23-4527-bcd6-adfe01234567', 1, 'e99b7af5-7d3a-4c0f-b8bc-e8d0388d8fc4', 'MATERNITY', 'IN_USE', 18, '2025-06-30', '2024-07-01', '2024-07-15', 10, 8);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
 values ('8c653f2a-f9a3-4d67-b3b6-12ad98fe0983', 1, 'f6ab3c6d-7078-45f6-9b22-4e37637bfec6', 'VACATION', 'REQUESTED', 10, '2025-10-31', '2024-09-15', '2024-09-20', 5, 5);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
 values ('fb9d9d75-b2ab-4ea4-b8b3-0a8f89e5c123', 1, '2e2293b1-3f9a-4f3d-abc8-32639b0a5e15', 'FIXED_HOLIDAY', 'IN_USE', 12, '2025-08-31', '2024-08-05', '2024-08-15', 6, 6);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
-values ('1c913a12-46e9-47b7-9e31-ab903fedc789', 1, '4b1c6c35-4627-4b35-b6e9-dc75c68b2c31', 'BIRTHDAY', 'TAKEN', 14, '2025-12-31', '2024-10-20', '2024-10-25', 5, 9);
+values ('1c913a12-46e9-47b7-9e31-ab903fedc789', 1, '4b1c6c35-4627-4b35-b6e9-dc75c68b2c31', 'BIRTHDAY', 'APPROVED', 14, '2025-12-31', '2024-10-20', '2024-10-25', 5, 9);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
 values ('b1249d3a-cc34-4954-88d9-1e4f67fe2436', 1, 'afc5c741-f70a-4394-853b-39d51b118927', 'MATERNITY', 'APPROVED', 20, '2025-11-30', '2024-11-05', '2024-11-12', 7, 13);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
-values ('6fdc47a8-127b-41c4-8d12-7fc12098ab12', 1, 'b2436b82-7b9f-4f0d-9463-f2c3173a45c3', 'VACATION', 'TAKEN', 18, '2025-06-30', '2024-07-10', '2024-07-20', 8, 10);
+values ('6fdc47a8-127b-41c4-8d12-7fc12098ab12', 1, 'b2436b82-7b9f-4f0d-9463-f2c3173a45c3', 'VACATION', 'PENDING', 18, '2025-06-30', '2024-07-10', '2024-07-20', 8, 10);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
 values ('12ec8b74-983d-4a17-b67e-134f45ae904c', 1, '5c1a7b82-832d-4f24-8377-54b77b91b6a8', 'FIXED_HOLIDAY', 'PENDING', 15, '2025-12-31', '2024-09-01', '2024-09-05', 4, 11);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
 values ('89bc4b2a-943f-487c-a9f3-bacf78145e67', 1, 'cba3efb7-32bc-44be-9fdc-fc5e4f211254', 'VACATION', 'APPROVED', 20, '2025-11-30', '2024-10-25', '2024-11-05', 9, 11);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
-values ('37adfc2a-7463-4b2d-a7c1-fae04567cdef', 1, 'e99b7af5-7d3a-4c0f-b8bc-e8d0388d8fc4', 'BIRTHDAY', 'TAKEN', 18, '2025-06-30', '2024-06-01', '2024-06-10', 6, 12);
+values ('37adfc2a-7463-4b2d-a7c1-fae04567cdef', 1, 'e99b7af5-7d3a-4c0f-b8bc-e8d0388d8fc4', 'BIRTHDAY', 'REQUESTED', 18, '2025-06-30', '2024-06-01', '2024-06-10', 6, 12);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
 values ('2bc138ea-12db-4b89-a0b4-78e045e34b4e', 1, 'f6ab3c6d-7078-45f6-9b22-4e37637bfec6', 'MATERNITY', 'REQUESTED', 10, '2025-10-31', '2024-10-01', '2024-10-10', 3, 7);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
 values ('14de1a56-6893-4e12-90f3-4faec457f002', 1, 'cd80e1d0-9a08-44a6-bd63-2c63eaa003d4', 'FIXED_HOLIDAY', 'PENDING', 22, '2025-08-31', '2024-07-15', '2024-07-25', 8, 14);
 insert into time_off_request (id, version, employee_id, category, state, available_days, expiration, start_date, end_date, days_to_be_take, days_balance)
-values ('fb08a6c9-cd17-42e8-b9e2-734ec834cae2', 1, '4b1c6c35-4627-4b35-b6e9-dc75c68b2c31', 'VACATION', 'TAKEN', 16, '2025-12-31', '2024-09-30', '2024-10-05', 4, 12);
+values ('fb08a6c9-cd17-42e8-b9e2-734ec834cae2', 1, '4b1c6c35-4627-4b35-b6e9-dc75c68b2c31', 'VACATION', 'PENDING', 16, '2025-12-31', '2024-09-30', '2024-10-05', 4, 12);