68729: Version and VersionHistory model, normalized and data-service classes

src/app/core/shared/version-history.model.ts

@@ -0,0 +1,40 @@
+import { ListableObject } from '../../shared/object-collection/shared/listable-object.model';
+import { CacheableObject } from '../cache/object-cache.reducer';
+import { ResourceType } from './resource-type';
+import { excludeFromEquals } from '../utilities/equals.decorators';
+import { Observable } from 'rxjs/internal/Observable';
+import { RemoteData } from '../data/remote-data';
+import { GenericConstructor } from './generic-constructor';
+import { PaginatedList } from '../data/paginated-list';
+import { Version } from './version.model';
+
+/**
+ * Class representing a DSpace Version History
+ */
+export class VersionHistory extends ListableObject implements CacheableObject {
+  static type = new ResourceType('versionhistory');
+
+  /**
+   * Link to itself
+   */
+  @excludeFromEquals
+  self: string;
+
+  /**
+   * The identifier of this Version History
+   */
+  id: number;
+
+  /**
+   * The list of versions within this history
+   */
+  @excludeFromEquals
+  versions: Observable<RemoteData<PaginatedList<Version>>>;
+
+  /**
+   * Method that returns as which type of object this object should be rendered
+   */
+  getRenderTypes(): Array<string | GenericConstructor<ListableObject>> {
+    return [this.constructor as GenericConstructor<ListableObject>];
+  }
+}