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

src/app/core/cache/models/normalized-version-history.model.ts

+import { autoserialize, deserialize, inheritSerialization } from 'cerialize';
+import { NormalizedObject } from './normalized-object.model';
+import { TypedObject } from '../object-cache.reducer';
+import { mapsTo, relationship } from '../builders/build-decorators';
+import { VersionHistory } from '../../shared/version-history.model';
+import { Version } from '../../shared/version.model';
+
+/**
+ * Normalized model class for a DSpace Version History
+ */
+@mapsTo(VersionHistory)
+@inheritSerialization(NormalizedObject)
+export class NormalizedVersionHistory extends NormalizedObject<VersionHistory> implements TypedObject {
+  /**
+   * The identifier of this Version History
+   */
+  @autoserialize
+  id: number;
+
+  /**
+   * The list of versions within this history
+   */
+  @deserialize
+  @relationship(Version, true)
+  versions: string[];
+}

src/app/core/cache/models/normalized-version.model.ts

+import { autoserialize, deserialize, inheritSerialization } from 'cerialize';
+import { Version } from '../../shared/version.model';
+import { mapsTo, relationship } from '../builders/build-decorators';
+import { TypedObject } from '../object-cache.reducer';
+import { NormalizedObject } from './normalized-object.model';
+import { Item } from '../../shared/item.model';
+import { VersionHistory } from '../../shared/version-history.model';
+
+/**
+ * Normalized model class for a DSpace Version
+ */
+@mapsTo(Version)
+@inheritSerialization(NormalizedObject)
+export class NormalizedVersion extends NormalizedObject<Version> implements TypedObject {
+  /**
+   * The identifier of this Version
+   */
+  @autoserialize
+  id: number;
+
+  /**
+   * The version number of the version's history this version represents
+   */
+  @autoserialize
+  version: number;
+
+  /**
+   * The summary for the changes made in this version
+   */
+  @autoserialize
+  summary: string;
+
+  /**
+   * The Date this version was created
+   */
+  @deserialize
+  created: Date;
+
+  /**
+   * The full version history this version is apart of
+   */
+  @deserialize
+  @relationship(VersionHistory, false)
+  versionhistory: string;
+
+  /**
+   * The item this version represents
+   */
+  @deserialize
+  @relationship(Item, false)
+  item: string;
+}

src/app/core/core.module.ts

@@ -142,6 +142,10 @@ import { NormalizedExternalSource } from './cache/models/normalized-external-sou
 import { NormalizedExternalSourceEntry } from './cache/models/normalized-external-source-entry.model';
 import { ExternalSourceService } from './data/external-source.service';
 import { LookupRelationService } from './data/lookup-relation.service';
+import { VersionDataService } from './data/version-data.service';
+import { NormalizedVersion } from './cache/models/normalized-version.model';
+import { NormalizedVersionHistory } from './cache/models/normalized-version-history.model';
+import { VersionHistoryDataService } from './data/version-history-data.service';
 
 /**
  * When not in production, endpoint responses can be mocked for testing purposes
@@ -257,6 +261,8 @@ const PROVIDERS = [
   RelationshipTypeService,
   ExternalSourceService,
   LookupRelationService,
+  VersionDataService,
+  VersionHistoryDataService,
   // register AuthInterceptor as HttpInterceptor
   {
     provide: HTTP_INTERCEPTORS,
@@ -304,7 +310,9 @@ export const normalizedModels =
     NormalizedRelationshipType,
     NormalizedItemType,
     NormalizedExternalSource,
-    NormalizedExternalSourceEntry
+    NormalizedExternalSourceEntry,
+    NormalizedVersion,
+    NormalizedVersionHistory
   ];
 
 @NgModule({

src/app/core/data/version-data.service.ts

+import { Injectable } from '@angular/core';
+import { DataService } from './data.service';
+import { Version } from '../shared/version.model';
+import { RequestService } from './request.service';
+import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
+import { NormalizedObjectBuildService } from '../cache/builders/normalized-object-build.service';
+import { Store } from '@ngrx/store';
+import { CoreState } from '../core.reducers';
+import { ObjectCacheService } from '../cache/object-cache.service';
+import { HALEndpointService } from '../shared/hal-endpoint.service';
+import { NotificationsService } from '../../shared/notifications/notifications.service';
+import { HttpClient } from '@angular/common/http';
+import { DefaultChangeAnalyzer } from './default-change-analyzer.service';
+import { FindListOptions } from './request.models';
+import { Observable } from 'rxjs/internal/Observable';
+
+@Injectable()
+export class VersionDataService extends DataService<Version> {
+  protected linkPath = 'versions';
+
+  constructor(
+    protected requestService: RequestService,
+    protected rdbService: RemoteDataBuildService,
+    protected dataBuildService: NormalizedObjectBuildService,
+    protected store: Store<CoreState>,
+    protected objectCache: ObjectCacheService,
+    protected halService: HALEndpointService,
+    protected notificationsService: NotificationsService,
+    protected http: HttpClient,
+    protected comparator: DefaultChangeAnalyzer<Version>) {
+    super();
+  }
+
+  /**
+   * Get the endpoint for browsing versions
+   */
+  getBrowseEndpoint(options: FindListOptions = {}, linkPath?: string): Observable<string> {
+    return this.halService.getEndpoint(this.linkPath);
+  }
+}

src/app/core/data/version-history-data.service.ts

+import { DataService } from './data.service';
+import { VersionHistory } from '../shared/version-history.model';
+import { Injectable } from '@angular/core';
+import { RequestService } from './request.service';
+import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
+import { NormalizedObjectBuildService } from '../cache/builders/normalized-object-build.service';
+import { Store } from '@ngrx/store';
+import { CoreState } from '../core.reducers';
+import { ObjectCacheService } from '../cache/object-cache.service';
+import { HALEndpointService } from '../shared/hal-endpoint.service';
+import { NotificationsService } from '../../shared/notifications/notifications.service';
+import { HttpClient } from '@angular/common/http';
+import { DefaultChangeAnalyzer } from './default-change-analyzer.service';
+import { FindListOptions } from './request.models';
+import { Observable } from 'rxjs/internal/Observable';
+
+@Injectable()
+export class VersionHistoryDataService extends DataService<VersionHistory> {
+  protected linkPath = 'versionhistories';
+
+  constructor(
+    protected requestService: RequestService,
+    protected rdbService: RemoteDataBuildService,
+    protected dataBuildService: NormalizedObjectBuildService,
+    protected store: Store<CoreState>,
+    protected objectCache: ObjectCacheService,
+    protected halService: HALEndpointService,
+    protected notificationsService: NotificationsService,
+    protected http: HttpClient,
+    protected comparator: DefaultChangeAnalyzer<VersionHistory>) {
+    super();
+  }
+
+  /**
+   * Get the endpoint for browsing versions
+   */
+  getBrowseEndpoint(options: FindListOptions = {}, linkPath?: string): Observable<string> {
+    return this.halService.getEndpoint(this.linkPath);
+  }
+}

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

+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>];
+  }
+}

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

+import { ResourceType } from './resource-type';
+import { ListableObject } from '../../shared/object-collection/shared/listable-object.model';
+import { CacheableObject } from '../cache/object-cache.reducer';
+import { excludeFromEquals } from '../utilities/equals.decorators';
+import { GenericConstructor } from './generic-constructor';
+import { Item } from './item.model';
+import { RemoteData } from '../data/remote-data';
+import { Observable } from 'rxjs/internal/Observable';
+import { VersionHistory } from './version-history.model';
+
+/**
+ * Class representing a DSpace Version
+ */
+export class Version extends ListableObject implements CacheableObject {
+  static type = new ResourceType('version');
+
+  /**
+   * Link to itself
+   */
+  @excludeFromEquals
+  self: string;
+
+  /**
+   * The identifier of this Version
+   */
+  id: number;
+
+  /**
+   * The version number of the version's history this version represents
+   */
+  version: number;
+
+  /**
+   * The summary for the changes made in this version
+   */
+  summary: string;
+
+  /**
+   * The Date this version was created
+   */
+  created: Date;
+
+  /**
+   * The full version history this version is apart of
+   */
+  @excludeFromEquals
+  versionhistory: Observable<RemoteData<VersionHistory>>;
+
+  /**
+   * The item this version represents
+   */
+  @excludeFromEquals
+  item: Observable<RemoteData<Item>>;
+
+  /**
+   * Method that returns as which type of object this object should be rendered
+   */
+  getRenderTypes(): Array<string | GenericConstructor<ListableObject>> {
+    return [this.constructor as GenericConstructor<ListableObject>];
+  }
+}