111638: Sort processes with creationTime as default field

src/app/process-page/overview/process-overview.component.html

@@ -15,10 +15,12 @@
                 [getInfoValueMethod]="processOverviewService.timeCreated"/>
         <ds-process-overview-table
                 [processStatus]="ProcessStatus.COMPLETED"
+                [sortField]="ProcessSortField.endTime"
                 [useAutoRefreshingSearchBy]="true"
                 [getInfoValueMethod]="processOverviewService.timeCompleted"/>
         <ds-process-overview-table
                 [processStatus]="ProcessStatus.FAILED"
+                [sortField]="ProcessSortField.endTime"
                 [useAutoRefreshingSearchBy]="true"
                 [getInfoValueMethod]="processOverviewService.timeCompleted"/>
     </div>

src/app/process-page/overview/process-overview.component.ts

@@ -13,7 +13,7 @@ import { ProcessBulkDeleteService } from './process-bulk-delete.service';
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
 import { hasValue } from '../../shared/empty.util';
 import { DSONameService } from '../../core/breadcrumbs/dso-name.service';
-import { ProcessOverviewService } from './process-overview.service';
+import { ProcessOverviewService, ProcessSortField } from './process-overview.service';
 import { ProcessStatus } from '../processes/process-status.model';
 
 @Component({
@@ -25,7 +25,9 @@ import { ProcessStatus } from '../processes/process-status.model';
  */
 export class ProcessOverviewComponent implements OnInit, OnDestroy {
 
+  // Enums are redeclared here so they can be used in the template
   protected readonly ProcessStatus = ProcessStatus;
+  protected readonly ProcessSortField = ProcessSortField;
 
   /**
    * List of all processes

src/app/process-page/overview/process-overview.service.ts

@@ -9,6 +9,18 @@ import { RequestParam } from '../../core/cache/models/request-param.model';
 import { ProcessStatus } from '../processes/process-status.model';
 import { DatePipe } from '@angular/common';
 import { PaginationComponentOptions } from '../../shared/pagination/pagination-component-options.model';
+import { SortOptions, SortDirection } from '../../core/cache/models/sort-options.model';
+
+/**
+ * The sortable fields for processes
+ * See [the endpoint documentation]{@link https://github.com/DSpace/RestContract/blob/main/processes-endpoint.md#search-processes-by-property}
+ * for details.
+ */
+export enum ProcessSortField {
+  creationTime = 'creationTime',
+  startTime = 'startTime',
+  endTime = 'endTime',
+}
 
 /**
  * Service to manage the processes displayed in the
@@ -58,13 +70,16 @@ export class ProcessOverviewService {
   /**
    * Map the provided paginationOptions to FindListOptions
    * @param paginationOptions the PaginationComponentOptions to map
+   * @param sortField the field on which the processes are sorted
    */
-  getFindListOptions(paginationOptions: PaginationComponentOptions): FindListOptions {
+  getFindListOptions(paginationOptions: PaginationComponentOptions, sortField: ProcessSortField): FindListOptions {
+    let sortOptions = new SortOptions(sortField, SortDirection.DESC);
     return Object.assign(
       new FindListOptions(),
       {
         currentPage: paginationOptions.currentPage,
         elementsPerPage: paginationOptions.pageSize,
+        sort: sortOptions,
       }
     );
   }

src/app/process-page/overview/table/process-overview-table.component.ts

@@ -5,7 +5,7 @@ import { RemoteData } from '../../../core/data/remote-data';
 import { PaginatedList } from '../../../core/data/paginated-list.model';
 import { Process } from '../../processes/process.model';
 import { PaginationComponentOptions } from '../../../shared/pagination/pagination-component-options.model';
-import { ProcessOverviewService } from '../process-overview.service';
+import { ProcessOverviewService, ProcessSortField } from '../process-overview.service';
 import { ProcessBulkDeleteService } from '../process-bulk-delete.service';
 import { EPersonDataService } from '../../../core/eperson/eperson-data.service';
 import { DSONameService } from '../../../core/breadcrumbs/dso-name.service';
@@ -40,6 +40,13 @@ export class ProcessOverviewTableComponent implements OnInit {
    */
   @Input() processStatus: ProcessStatus;
 
+  /**
+   * The field on which the processes in this table are sorted
+   * {@link ProcessSortField.creationTime} by default as every single process has a creation time,
+   * but not every process has a start or end time
+   */
+  @Input() sortField: ProcessSortField = ProcessSortField.creationTime;
+
   /**
    * Whether to use auto refresh for the processes shown in this table.
    */
@@ -118,7 +125,7 @@ export class ProcessOverviewTableComponent implements OnInit {
       .pipe(
         // Map the paginationOptions to findListOptions
         map((paginationOptions: PaginationComponentOptions) =>
-          this.processOverviewService.getFindListOptions(paginationOptions)),
+          this.processOverviewService.getFindListOptions(paginationOptions, this.sortField)),
         // Use the findListOptions to retrieve the relevant processes every interval
         switchMap((findListOptions: FindListOptions) =>
           this.processOverviewService.getProcessesByProcessStatus(