[DURACOM-191] Fix dso-edit-metadata.component which still used getDataServiceFor decorator

src/app/collection-page/edit-item-template-page/edit-item-template-page.component.spec.ts

@@ -12,6 +12,8 @@ import { of as observableOf } from 'rxjs';
 
 import { ItemTemplateDataService } from '../../core/data/item-template-data.service';
 import { Collection } from '../../core/shared/collection.model';
+import { DsoEditMetadataComponent } from '../../dso-shared/dso-edit-metadata/dso-edit-metadata.component';
+import { ThemedDsoEditMetadataComponent } from '../../dso-shared/dso-edit-metadata/themed-dso-edit-metadata.component';
 import { getMockThemeService } from '../../shared/mocks/theme-service.mock';
 import { NotificationsService } from '../../shared/notifications/notifications.service';
 import {
@@ -47,6 +49,10 @@ describe('EditItemTemplatePageComponent', () => {
         { provide: NotificationsService, useValue: new NotificationsServiceStub() },
       ],
       schemas: [NO_ERRORS_SCHEMA],
+    }).overrideComponent(EditItemTemplatePageComponent, {
+      remove: {
+        imports: [ThemedDsoEditMetadataComponent, DsoEditMetadataComponent],
+      },
     }).compileComponents();
   }));
 

src/app/collection-page/edit-item-template-page/edit-item-template-page.component.ts

@@ -24,6 +24,7 @@ import { RemoteData } from '../../core/data/remote-data';
 import { Collection } from '../../core/shared/collection.model';
 import { Item } from '../../core/shared/item.model';
 import { getFirstSucceededRemoteDataPayload } from '../../core/shared/operators';
+import { DsoEditMetadataComponent } from '../../dso-shared/dso-edit-metadata/dso-edit-metadata.component';
 import { ThemedDsoEditMetadataComponent } from '../../dso-shared/dso-edit-metadata/themed-dso-edit-metadata.component';
 import { AlertComponent } from '../../shared/alert/alert.component';
 import { AlertType } from '../../shared/alert/alert-type';
@@ -36,6 +37,7 @@ import { getCollectionEditRoute } from '../collection-page-routing-paths';
   templateUrl: './edit-item-template-page.component.html',
   imports: [
     ThemedDsoEditMetadataComponent,
+    DsoEditMetadataComponent,
     RouterLink,
     AsyncPipe,
     VarDirective,

src/app/dso-shared/dso-edit-metadata/dso-edit-metadata.component.spec.ts

@@ -1,7 +1,6 @@
+import { CommonModule } from '@angular/common';
 import {
-  ChangeDetectionStrategy,
   DebugElement,
-  Injectable,
   NO_ERRORS_SCHEMA,
 } from '@angular/core';
 import {
@@ -9,15 +8,15 @@ import {
   TestBed,
   waitForAsync,
 } from '@angular/core/testing';
-import { By } from '@angular/platform-browser';
+import {
+  BrowserModule,
+  By,
+} from '@angular/platform-browser';
 import { RouterTestingModule } from '@angular/router/testing';
 import { TranslateModule } from '@ngx-translate/core';
-import { Operation } from 'fast-json-patch';
-import { Observable } from 'rxjs';
 
+import { APP_DATA_SERVICES_MAP } from '../../../config/app-config.interface';
 import { ArrayMoveChangeAnalyzer } from '../../core/data/array-move-change-analyzer.service';
-import { DATA_SERVICE_FACTORY } from '../../core/data/base/data-service.decorator';
-import { RemoteData } from '../../core/data/remote-data';
 import { DSpaceObject } from '../../core/shared/dspace-object.model';
 import { Item } from '../../core/shared/item.model';
 import { ITEM } from '../../core/shared/item.resource-type';
@@ -25,7 +24,7 @@ import { MetadataValue } from '../../core/shared/metadata.models';
 import { AlertComponent } from '../../shared/alert/alert.component';
 import { LoadingComponent } from '../../shared/loading/loading.component';
 import { NotificationsService } from '../../shared/notifications/notifications.service';
-import { createSuccessfulRemoteDataObject$ } from '../../shared/remote-data.utils';
+import { TestDataService } from '../../shared/testing/test-data-service.mock';
 import { VarDirective } from '../../shared/utils/var.directive';
 import { DsoEditMetadataComponent } from './dso-edit-metadata.component';
 import { DsoEditMetadataFieldValuesComponent } from './dso-edit-metadata-field-values/dso-edit-metadata-field-values.component';
@@ -39,12 +38,9 @@ const REINSTATE_BTN = 'reinstate';
 const SAVE_BTN = 'save';
 const DISCARD_BTN = 'discard';
 
-@Injectable()
-class TestDataService {
-  patch(object: Item, operations: Operation[]): Observable<RemoteData<Item>> {
-    return createSuccessfulRemoteDataObject$(object);
-  }
-}
+const mockDataServiceMap: any = {
+  [ITEM.value]: () => import('../../shared/testing/test-data-service.mock').then(m => m.TestDataService),
+};
 
 describe('DsoEditMetadataComponent', () => {
   let component: DsoEditMetadataComponent;
@@ -92,21 +88,18 @@ describe('DsoEditMetadataComponent', () => {
 
     TestBed.configureTestingModule({
       imports: [
+        CommonModule,
+        BrowserModule,
         TranslateModule.forRoot(),
         RouterTestingModule.withRoutes([]),
         DsoEditMetadataComponent,
         VarDirective,
       ],
       providers: [
-        TestDataService,
-        {
-          provide: DATA_SERVICE_FACTORY,
-          useValue: jasmine
-            .createSpy('getDataServiceFor')
-            .and.returnValue(TestDataService),
-        },
+        { provide: APP_DATA_SERVICES_MAP, useValue: mockDataServiceMap },
         { provide: NotificationsService, useValue: notificationsService },
         ArrayMoveChangeAnalyzer,
+        TestDataService,
       ],
       schemas: [NO_ERRORS_SCHEMA],
     })
@@ -122,19 +115,16 @@ describe('DsoEditMetadataComponent', () => {
             LoadingComponent,
           ],
         },
-        add: {
-          changeDetection: ChangeDetectionStrategy.Default,
-        },
       })
       .compileComponents();
   }));
 
-  beforeEach(() => {
+  beforeEach(waitForAsync(() => {
     fixture = TestBed.createComponent(DsoEditMetadataComponent);
     component = fixture.componentInstance;
     component.dso = dso;
     fixture.detectChanges();
-  });
+  }));
 
   describe('when no changes have been made', () => {
     assertButton(ADD_BTN, true, false);

src/app/dso-shared/dso-edit-metadata/dso-edit-metadata.component.ts

@@ -4,8 +4,10 @@ import {
   NgIf,
 } from '@angular/common';
 import {
+  ChangeDetectorRef,
   Component,
   Inject,
+  InjectionToken,
   Injector,
   Input,
   OnDestroy,
@@ -23,18 +25,25 @@ import {
 import {
   BehaviorSubject,
   combineLatest as observableCombineLatest,
+  EMPTY,
   Observable,
   Subscription,
 } from 'rxjs';
-import { map } from 'rxjs/operators';
+import {
+  map,
+  mergeMap,
+  tap,
+} from 'rxjs/operators';
 
+import {
+  APP_DATA_SERVICES_MAP,
+  LazyDataServicesMap,
+} from '../../../config/app-config.interface';
 import { ArrayMoveChangeAnalyzer } from '../../core/data/array-move-change-analyzer.service';
-import { DATA_SERVICE_FACTORY } from '../../core/data/base/data-service.decorator';
-import { HALDataService } from '../../core/data/base/hal-data-service.interface';
 import { RemoteData } from '../../core/data/remote-data';
 import { UpdateDataService } from '../../core/data/update-data.service';
+import { lazyService } from '../../core/lazy-service';
 import { DSpaceObject } from '../../core/shared/dspace-object.model';
-import { GenericConstructor } from '../../core/shared/generic-constructor';
 import { getFirstCompletedRemoteData } from '../../core/shared/operators';
 import { ResourceType } from '../../core/shared/resource-type';
 import { AlertComponent } from '../../shared/alert/alert.component';
@@ -42,6 +51,7 @@ import { AlertType } from '../../shared/alert/alert-type';
 import {
   hasNoValue,
   hasValue,
+  isNotEmpty,
 } from '../../shared/empty.util';
 import { LoadingComponent } from '../../shared/loading/loading.component';
 import { NotificationsService } from '../../shared/notifications/notifications.service';
@@ -141,7 +151,8 @@ export class DsoEditMetadataComponent implements OnInit, OnDestroy {
               protected translateService: TranslateService,
               protected parentInjector: Injector,
               protected arrayMoveChangeAnalyser: ArrayMoveChangeAnalyzer<number>,
-              @Inject(DATA_SERVICE_FACTORY) protected getDataServiceFor: (resourceType: ResourceType) => GenericConstructor<HALDataService<any>>) {
+              protected cdr: ChangeDetectorRef,
+              @Inject(APP_DATA_SERVICES_MAP) private dataServiceMap: InjectionToken<LazyDataServicesMap>) {
   }
 
   /**
@@ -152,15 +163,18 @@ export class DsoEditMetadataComponent implements OnInit, OnDestroy {
     if (hasNoValue(this.dso)) {
       this.dsoUpdateSubscription = observableCombineLatest([this.route.data, this.route.parent.data]).pipe(
         map(([data, parentData]: [Data, Data]) => Object.assign({}, data, parentData)),
-        map((data: any) => data.dso),
-      ).subscribe((rd: RemoteData<DSpaceObject>) => {
-        this.dso = rd.payload;
-        this.initDataService();
+        tap((data: any)  => this.initDSO(data.dso.payload)),
+        mergeMap(() => this.retrieveDataService()),
+      ).subscribe((dataService: UpdateDataService<DSpaceObject>) => {
+        this.initDataService(dataService);
         this.initForm();
       });
     } else {
-      this.initDataService();
+      this.initDSOType(this.dso);
+      this.retrieveDataService().subscribe((dataService: UpdateDataService<DSpaceObject>) => {
+        this.initDataService(dataService);
         this.initForm();
+      });
     }
     this.savingOrLoadingFieldValidation$ = observableCombineLatest([this.saving$, this.loadingFieldValidation$]).pipe(
       map(([saving, loading]: [boolean, boolean]) => saving || loading),
@@ -168,25 +182,47 @@ export class DsoEditMetadataComponent implements OnInit, OnDestroy {
   }
 
   /**
-   * Initialise (resolve) the data-service for the current DSpaceObject
+   * Resolve the data-service for the current DSpaceObject and retrieve its instance
    */
-  initDataService(): void {
-    let type: ResourceType;
-    if (typeof this.dso.type === 'string') {
-      type = new ResourceType(this.dso.type);
-    } else {
-      type = this.dso.type;
-    }
+  retrieveDataService(): Observable<UpdateDataService<DSpaceObject>> {
     if (hasNoValue(this.updateDataService)) {
-      const provider = this.getDataServiceFor(type);
-      this.updateDataService = Injector.create({
-        providers: [],
-        parent: this.parentInjector,
-      }).get(provider);
+      const lazyProvider$: Observable<UpdateDataService<DSpaceObject>> = lazyService(this.dataServiceMap[this.dsoType], this.parentInjector);
+      return lazyProvider$;
+    } else {
+      return EMPTY;
+    }
+  }
+
+  /**
+   * Initialise the current DSpaceObject
+   */
+  initDSO(object: DSpaceObject) {
+    this.dso = object;
+    this.initDSOType(object);
+  }
+
+  /**
+   * Initialise the current DSpaceObject's type
+   */
+  initDSOType(object: DSpaceObject) {
+    let type: ResourceType;
+    if (typeof object.type === 'string') {
+      type = new ResourceType(object.type);
+    } else {
+      type = object.type;
     }
     this.dsoType = type.value;
   }
 
+  /**
+   * Initialise the data-service for the current DSpaceObject
+   */
+  initDataService(dataService: UpdateDataService<DSpaceObject>): void {
+    if (isNotEmpty(dataService)) {
+      this.updateDataService = dataService;
+    }
+  }
+
   /**
    * Initialise the dynamic form object by passing the DSpaceObject's metadata
    * Call onValueSaved() to update the form's state properties
@@ -194,6 +230,7 @@ export class DsoEditMetadataComponent implements OnInit, OnDestroy {
   initForm(): void {
     this.form = new DsoEditMetadataForm(this.dso.metadata);
     this.onValueSaved();
+    this.cdr.detectChanges();
   }
 
   /**

src/app/shared/testing/test-data-service.mock.ts

@@ -1,7 +1,14 @@
 import { Injectable } from '@angular/core';
-import { of } from 'rxjs';
+import { Operation } from 'fast-json-patch';
+import {
+  Observable,
+  of,
+} from 'rxjs';
 
 import { FindListOptions } from '../../core/data/find-list-options.model';
+import { RemoteData } from '../../core/data/remote-data';
+import { Item } from '../../core/shared/item.model';
+import { createSuccessfulRemoteDataObject$ } from '../remote-data.utils';
 import { FollowLinkConfig } from '../utils/follow-link-config.model';
 
 @Injectable()
@@ -13,4 +20,8 @@ export class TestDataService {
   findByHref(href: string, useCachedVersionIfAvailable = true, reRequestOnStale = true, ...linksToFollow: FollowLinkConfig<any>[]) {
     return of('findByHref');
   }
+
+  patch(object: Item, operations: Operation[]): Observable<RemoteData<Item>> {
+    return createSuccessfulRemoteDataObject$(object);
+  }
 }