64503: Content Source fetched from API

resources/i18n/en.json

@@ -101,17 +101,17 @@
   "collection.edit.tabs.roles.title": "Collection Edit - Roles",
   "collection.edit.tabs.source.external": "This collection harvests its content from an external source",
   "collection.edit.tabs.source.form.errors.provider.required": "You must provide a set id of the target collection.",
-  "collection.edit.tabs.source.form.format": "Metadata Format",
-  "collection.edit.tabs.source.form.harvest": "Content being harvested",
+  "collection.edit.tabs.source.form.harvestType": "Content being harvested",
   "collection.edit.tabs.source.form.head": "Configure an external source",
-  "collection.edit.tabs.source.form.options.format.dc": "Simple Dublin Core",
-  "collection.edit.tabs.source.form.options.format.dim": "DSpace Intermediate Metadata",
-  "collection.edit.tabs.source.form.options.format.qdc": "Qualified Dublin Core",
-  "collection.edit.tabs.source.form.options.harvest.1": "Harvest metadata only",
-  "collection.edit.tabs.source.form.options.harvest.2": "Harvest metadata and references to bitstreams (requires ORE support)",
-  "collection.edit.tabs.source.form.options.harvest.3": "Harvest metadata and bitstreams (requires ORE support)",
-  "collection.edit.tabs.source.form.provider": "OAI Provider",
-  "collection.edit.tabs.source.form.set": "OAI specific set id",
+  "collection.edit.tabs.source.form.metadataConfigId": "Metadata Format",
+  "collection.edit.tabs.source.form.oaiSetId": "OAI specific set id",
+  "collection.edit.tabs.source.form.oaiSource": "OAI Provider",
+  "collection.edit.tabs.source.form.options.harvestType.METADATA_AND_BITSTREAMS": "Harvest metadata and bitstreams (requires ORE support)",
+  "collection.edit.tabs.source.form.options.harvestType.METADATA_AND_REF": "Harvest metadata and references to bitstreams (requires ORE support)",
+  "collection.edit.tabs.source.form.options.harvestType.METADATA_ONLY": "Harvest metadata only",
+  "collection.edit.tabs.source.form.options.metadataConfigId.dc": "Simple Dublin Core",
+  "collection.edit.tabs.source.form.options.metadataConfigId.dim": "DSpace Intermediate Metadata",
+  "collection.edit.tabs.source.form.options.metadataConfigId.qdc": "Qualified Dublin Core",
   "collection.edit.tabs.source.head": "Content Source",
   "collection.edit.tabs.source.notifications.discarded.content": "Your changes were discarded. To reinstate your changes click the 'Undo' button",
   "collection.edit.tabs.source.notifications.discarded.title": "Changed discarded",

src/app/+collection-page/edit-collection-page/collection-source/collection-source.component.html

@@ -1,55 +1,57 @@
-<div class="container-fluid">
-  <div class="d-inline-block float-right">
-    <button class=" btn btn-danger" *ngIf="!(isReinstatable() | async)"
-            [disabled]="!(hasChanges() | async)"
-            (click)="discard()"><i
-      class="fas fa-times"></i>
-      <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.discard-button" | translate}}</span>
-    </button>
-    <button class="btn btn-warning" *ngIf="isReinstatable() | async"
-            (click)="reinstate()"><i
-      class="fas fa-undo-alt"></i>
-      <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.reinstate-button" | translate}}</span>
-    </button>
-    <button class="btn btn-primary" [disabled]="!(hasChanges() | async) || !isValid()"
-            (click)="onSubmit()"><i
-      class="fas fa-save"></i>
-      <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.save-button" | translate}}</span>
-    </button>
+<ng-container *ngIf="contentSource">
+  <div class="container-fluid">
+    <div class="d-inline-block float-right">
+      <button class=" btn btn-danger" *ngIf="!(isReinstatable() | async)"
+              [disabled]="!(hasChanges() | async)"
+              (click)="discard()"><i
+        class="fas fa-times"></i>
+        <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.discard-button" | translate}}</span>
+      </button>
+      <button class="btn btn-warning" *ngIf="isReinstatable() | async"
+              (click)="reinstate()"><i
+        class="fas fa-undo-alt"></i>
+        <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.reinstate-button" | translate}}</span>
+      </button>
+      <button class="btn btn-primary" [disabled]="!(hasChanges() | async) || !isValid()"
+              (click)="onSubmit()"><i
+        class="fas fa-save"></i>
+        <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.save-button" | translate}}</span>
+      </button>
+    </div>
+    <h4>{{ 'collection.edit.tabs.source.head' | translate }}</h4>
+    <div class="form-check mb-4">
+      <input type="checkbox" class="form-check-input" id="externalSourceCheck" [checked]="(contentSource.harvestType !== harvestTypeNone)" (change)="changeExternalSource()">
+      <label class="form-check-label" for="externalSourceCheck">{{ 'collection.edit.tabs.source.external' | translate }}</label>
+    </div>
+    <h4 *ngIf="(contentSource.harvestType !== harvestTypeNone)">{{ 'collection.edit.tabs.source.form.head' | translate }}</h4>
   </div>
-  <h4>{{ 'collection.edit.tabs.source.head' | translate }}</h4>
-  <div class="form-check mb-4">
-    <input type="checkbox" class="form-check-input" id="externalSourceCheck" [checked]="contentSource.enabled" (change)="changeExternalSource()">
-    <label class="form-check-label" for="externalSourceCheck">{{ 'collection.edit.tabs.source.external' | translate }}</label>
+  <ds-form *ngIf="formGroup && (contentSource.harvestType !== harvestTypeNone)"
+           [formId]="'collection-source-form-id'"
+           [formGroup]="formGroup"
+           [formModel]="formModel"
+           [formLayout]="formLayout"
+           [displaySubmit]="false"
+           (dfChange)="onChange($event)"
+           (submitForm)="onSubmit()"
+           (cancel)="onCancel()"></ds-form>
+  <div class="container-fluid" *ngIf="(contentSource.harvestType !== harvestTypeNone)">
+    <div class="d-inline-block float-right">
+      <button class=" btn btn-danger" *ngIf="!(isReinstatable() | async)"
+              [disabled]="!(hasChanges() | async)"
+              (click)="discard()"><i
+        class="fas fa-times"></i>
+        <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.discard-button" | translate}}</span>
+      </button>
+      <button class="btn btn-warning" *ngIf="isReinstatable() | async"
+              (click)="reinstate()"><i
+        class="fas fa-undo-alt"></i>
+        <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.reinstate-button" | translate}}</span>
+      </button>
+      <button class="btn btn-primary" [disabled]="!(hasChanges() | async) || !isValid()"
+              (click)="onSubmit()"><i
+        class="fas fa-save"></i>
+        <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.save-button" | translate}}</span>
+      </button>
+    </div>
   </div>
-  <h4 *ngIf="contentSource.enabled">{{ 'collection.edit.tabs.source.form.head' | translate }}</h4>
-</div>
-<ds-form *ngIf="formGroup && contentSource.enabled"
-         [formId]="'collection-source-form-id'"
-         [formGroup]="formGroup"
-         [formModel]="formModel"
-         [formLayout]="formLayout"
-         [displaySubmit]="false"
-         (dfChange)="onChange($event)"
-         (submitForm)="onSubmit()"
-         (cancel)="onCancel()"></ds-form>
-<div class="container-fluid" *ngIf="contentSource.enabled">
-  <div class="d-inline-block float-right">
-    <button class=" btn btn-danger" *ngIf="!(isReinstatable() | async)"
-            [disabled]="!(hasChanges() | async)"
-            (click)="discard()"><i
-      class="fas fa-times"></i>
-      <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.discard-button" | translate}}</span>
-    </button>
-    <button class="btn btn-warning" *ngIf="isReinstatable() | async"
-            (click)="reinstate()"><i
-      class="fas fa-undo-alt"></i>
-      <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.reinstate-button" | translate}}</span>
-    </button>
-    <button class="btn btn-primary" [disabled]="!(hasChanges() | async) || !isValid()"
-            (click)="onSubmit()"><i
-      class="fas fa-save"></i>
-      <span class="d-none d-sm-inline">&nbsp;{{"item.edit.metadata.save-button" | translate}}</span>
-    </button>
-  </div>
-</div>
+</ng-container>

src/app/+collection-page/edit-collection-page/collection-source/collection-source.component.ts

@@ -1,8 +1,13 @@
 import { Component, Inject, OnDestroy, OnInit } from '@angular/core';
 import { AbstractTrackableComponent } from '../../../shared/trackable/abstract-trackable.component';
 import {
-  DynamicFormControlModel, DynamicFormGroupModel, DynamicFormLayout, DynamicFormService,
-  DynamicInputModel, DynamicOptionControlModel, DynamicRadioGroupModel,
+  DynamicFormControlModel,
+  DynamicFormGroupModel,
+  DynamicFormLayout,
+  DynamicFormService,
+  DynamicInputModel,
+  DynamicOptionControlModel,
+  DynamicRadioGroupModel,
   DynamicSelectModel,
   DynamicTextAreaModel
 } from '@ng-dynamic-forms/core';
@@ -12,16 +17,18 @@ import { ObjectUpdatesService } from '../../../core/data/object-updates/object-u
 import { NotificationsService } from '../../../shared/notifications/notifications.service';
 import { FormGroup } from '@angular/forms';
 import { hasValue, isNotEmpty } from '../../../shared/empty.util';
-import { ContentSource } from '../../../core/shared/content-source.model';
+import { ContentSource, ContentSourceHarvestType } from '../../../core/shared/content-source.model';
 import { Observable } from 'rxjs/internal/Observable';
 import { RemoteData } from '../../../core/data/remote-data';
 import { Collection } from '../../../core/shared/collection.model';
-import { first, map } from 'rxjs/operators';
+import { first, map, switchMap, take } from 'rxjs/operators';
 import { ActivatedRoute, Router } from '@angular/router';
 import { FieldUpdate, FieldUpdates } from '../../../core/data/object-updates/object-updates.reducer';
 import { Subscription } from 'rxjs/internal/Subscription';
 import { cloneDeep } from 'lodash';
 import { GLOBAL_CONFIG, GlobalConfig } from '../../../../config';
+import { CollectionDataService } from '../../../core/data/collection-data.service';
+import { getSucceededRemoteData } from '../../../core/shared/operators';
 
 /**
  * Component for managing the content source of the collection
@@ -64,9 +71,9 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
   /**
    * The Dynamic Input Model for the OAI Provider
    */
-  providerModel = new DynamicInputModel({
-    id: 'provider',
-    name: 'provider',
+  oaiSourceModel = new DynamicInputModel({
+    id: 'oaiSource',
+    name: 'oaiSource',
     required: true,
     validators: {
       required: null
@@ -79,17 +86,17 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
   /**
    * The Dynamic Input Model for the OAI Set
    */
-  setModel = new DynamicInputModel({
-    id: 'set',
-    name: 'set'
+  oaiSetIdModel = new DynamicInputModel({
+    id: 'oaiSetId',
+    name: 'oaiSetId'
   });
 
   /**
    * The Dynamic Input Model for the Metadata Format used
    */
-  formatModel = new DynamicSelectModel({
-    id: 'format',
-    name: 'format',
+  metadataConfigIdModel = new DynamicSelectModel({
+    id: 'metadataConfigId',
+    name: 'metadataConfigId',
     options: [
       {
         value: 'dc'
@@ -100,24 +107,25 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
       {
         value: 'dim'
       }
-    ]
+    ],
+    value: 'dc'
   });
 
   /**
    * The Dynamic Input Model for the type of harvesting
    */
-  harvestModel = new DynamicRadioGroupModel<number>({
-    id: 'harvest',
-    name: 'harvest',
+  harvestTypeModel = new DynamicRadioGroupModel<string>({
+    id: 'harvestType',
+    name: 'harvestType',
     options: [
       {
-        value: 1
+        value: ContentSourceHarvestType.Metadata
       },
       {
-        value: 2
+        value: ContentSourceHarvestType.MetadataAndRef
       },
       {
-        value: 3
+        value: ContentSourceHarvestType.MetadataAndBitstreams
       }
     ]
   });
@@ -125,7 +133,7 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
   /**
    * All input models in a simple array for easier iterations
    */
-  inputModels = [this.providerModel, this.setModel, this.formatModel, this.harvestModel];
+  inputModels = [this.oaiSourceModel, this.oaiSetIdModel, this.metadataConfigIdModel, this.harvestTypeModel];
 
   /**
    * The dynamic form fields used for editing the content source of a collection
@@ -133,22 +141,22 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
    */
   formModel: DynamicFormControlModel[] = [
     new DynamicFormGroupModel({
-      id: 'providerContainer',
+      id: 'oaiSourceContainer',
       group: [
-        this.providerModel
+        this.oaiSourceModel
       ]
     }),
     new DynamicFormGroupModel({
-      id: 'setContainer',
+      id: 'oaiSetContainer',
       group: [
-        this.setModel,
-        this.formatModel
+        this.oaiSetIdModel,
+        this.metadataConfigIdModel
       ]
     }),
     new DynamicFormGroupModel({
-      id: 'harvestContainer',
+      id: 'harvestTypeContainer',
       group: [
-        this.harvestModel
+        this.harvestTypeModel
       ]
     })
   ];
@@ -157,38 +165,38 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
    * Layout used for structuring the form inputs
    */
   formLayout: DynamicFormLayout = {
-    provider: {
+    oaiSource: {
       grid: {
         host: 'col-12 d-inline-block'
       }
     },
-    set: {
+    oaiSetId: {
       grid: {
         host: 'col col-sm-6 d-inline-block'
       }
     },
-    format: {
+    metadataConfigId: {
       grid: {
         host: 'col col-sm-6 d-inline-block'
       }
     },
-    harvest: {
+    harvestType: {
       grid: {
         host: 'col-12',
         option: 'btn-outline-secondary'
       }
     },
-    setContainer: {
+    oaiSetContainer: {
       grid: {
         host: 'row'
       }
     },
-    providerContainer: {
+    oaiSourceContainer: {
       grid: {
         host: 'row'
       }
     },
-    harvestContainer: {
+    harvestTypeContainer: {
       grid: {
         host: 'row'
       }
@@ -205,6 +213,8 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
    */
   updateSub: Subscription;
 
+  harvestTypeNone = ContentSourceHarvestType.None;
+
   public constructor(public objectUpdatesService: ObjectUpdatesService,
                      public notificationsService: NotificationsService,
                      protected location: Location,
@@ -212,7 +222,8 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
                      protected translate: TranslateService,
                      protected route: ActivatedRoute,
                      protected router: Router,
-                     @Inject(GLOBAL_CONFIG) protected EnvConfig: GlobalConfig,) {
+                     @Inject(GLOBAL_CONFIG) protected EnvConfig: GlobalConfig,
+                     protected collectionService: CollectionDataService) {
     super(objectUpdatesService, notificationsService, translate);
   }
 
@@ -229,16 +240,21 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
     this.formGroup = this.formService.createFormGroup(this.formModel);
     this.collectionRD$ = this.route.parent.data.pipe(first(), map((data) => data.dso));
 
-    /* Create a new ContentSource object - TODO: Update to be fetched from the collection */
-    this.contentSource = new ContentSource();
+    this.collectionRD$.pipe(
+      getSucceededRemoteData(),
+      map((col) => col.payload.uuid),
+      switchMap((uuid) => this.collectionService.getContentSource(uuid)),
+      take(1)
+    ).subscribe((contentSource: ContentSource) => {
+      this.contentSource = contentSource;
+      this.initializeOriginalContentSource();
+    });
 
     this.updateFieldTranslations();
     this.translate.onLangChange
       .subscribe(() => {
         this.updateFieldTranslations();
       });
-
-    this.initializeOriginalContentSource();
   }
 
   /**
@@ -254,15 +270,15 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
       if (update) {
         const field = update.field as ContentSource;
         this.formGroup.patchValue({
-          providerContainer: {
-            provider: field.provider
+          oaiSourceContainer: {
+            oaiSource: field.oaiSource
           },
-          setContainer: {
-            set: field.set,
-            format: field.format
+          oaiSetContainer: {
+            oaiSetId: field.oaiSetId,
+            metadataConfigId: field.metadataConfigId
           },
-          harvestContainer: {
-            harvest: field.harvest
+          harvestTypeContainer: {
+            harvestType: field.harvestType
           }
         });
         this.contentSource = cloneDeep(field);
@@ -307,7 +323,7 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
    * @param event
    */
   onChange(event) {
-    this.updateContentSourceField(event.model);
+    this.updateContentSourceField(event.model, true);
     this.saveFieldUpdate();
   }
 
@@ -331,24 +347,28 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
    * Is the current form valid to be submitted ?
    */
   isValid(): boolean {
-    return !this.contentSource.enabled || this.formGroup.valid;
+    return (this.contentSource.harvestType === ContentSourceHarvestType.None) || this.formGroup.valid;
   }
 
   /**
    * Switch the external source on or off and fire a field update
    */
   changeExternalSource() {
-    this.contentSource.enabled = !this.contentSource.enabled;
-    this.updateContentSource();
+    if (this.contentSource.harvestType === ContentSourceHarvestType.None) {
+      this.contentSource.harvestType = ContentSourceHarvestType.Metadata;
+    } else {
+      this.contentSource.harvestType = ContentSourceHarvestType.None;
+    }
+    this.updateContentSource(false);
   }
 
   /**
    * Loop over all inputs and update the Content Source with their value
    */
-  updateContentSource() {
+  updateContentSource(updateHarvestType: boolean) {
     this.inputModels.forEach(
       (fieldModel: DynamicInputModel) => {
-        this.updateContentSourceField(fieldModel)
+        this.updateContentSourceField(fieldModel, updateHarvestType)
       }
     );
     this.saveFieldUpdate();
@@ -358,8 +378,8 @@ export class CollectionSourceComponent extends AbstractTrackableComponent implem
    * Update the Content Source with the value from a DynamicInputModel
    * @param fieldModel
    */
-  updateContentSourceField(fieldModel: DynamicInputModel) {
-    if (hasValue(fieldModel.value)) {
+  updateContentSourceField(fieldModel: DynamicInputModel, updateHarvestType: boolean) {
+    if (hasValue(fieldModel.value) && !(fieldModel.id === this.harvestTypeModel.id && !updateHarvestType)) {
       this.contentSource[fieldModel.id] = fieldModel.value;
     }
   }

src/app/core/cache/response.models.ts

@@ -14,6 +14,7 @@ import { DSpaceObject } from '../shared/dspace-object.model';
 import { NormalizedAuthStatus } from '../auth/models/normalized-auth-status.model';
 import { MetadataSchema } from '../metadata/metadata-schema.model';
 import { MetadataField } from '../metadata/metadata-field.model';
+import { ContentSource } from '../shared/content-source.model';
 
 /* tslint:disable:max-classes-per-file */
 export class RestResponse {
@@ -288,4 +289,17 @@ export class FilteredDiscoveryQueryResponse extends RestResponse {
     super(true, statusCode, statusText);
   }
 }
+
+/**
+ * A successful response containing exactly one MetadataSchema
+ */
+export class ContentSourceSuccessResponse extends RestResponse {
+  constructor(
+    public contentsource: ContentSource,
+    public statusCode: number,
+    public statusText: string,
+  ) {
+    super(true, statusCode, statusText);
+  }
+}
 /* tslint:enable:max-classes-per-file */

src/app/core/core.module.ts

@@ -117,6 +117,7 @@ import { MetadatafieldParsingService } from './data/metadatafield-parsing.servic
 import { NormalizedSubmissionUploadsModel } from './config/models/normalized-config-submission-uploads.model';
 import { NormalizedBrowseEntry } from './shared/normalized-browse-entry.model';
 import { BrowseDefinition } from './shared/browse-definition.model';
+import { ContentSourceResponseParsingService } from './data/content-source-response-parsing.service';
 
 const IMPORTS = [
   CommonModule,
@@ -203,6 +204,7 @@ const PROVIDERS = [
   TaskResponseParsingService,
   ClaimedTaskDataService,
   PoolTaskDataService,
+  ContentSourceResponseParsingService,
   // register AuthInterceptor as HttpInterceptor
   {
     provide: HTTP_INTERCEPTORS,

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

@@ -1,6 +1,6 @@
 import { Injectable } from '@angular/core';
 
-import { filter, map, take } from 'rxjs/operators';
+import { filter, map, take, tap } from 'rxjs/operators';
 import { Store } from '@ngrx/store';
 
 import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
@@ -16,9 +16,12 @@ import { HttpClient } from '@angular/common/http';
 import { NormalizedObjectBuildService } from '../cache/builders/normalized-object-build.service';
 import { DSOChangeAnalyzer } from './dso-change-analyzer.service';
 import { Observable } from 'rxjs/internal/Observable';
-import { FindAllOptions } from './request.models';
+import { ContentSourceRequest, FindAllOptions, RestRequest } from './request.models';
 import { RemoteData } from './remote-data';
 import { PaginatedList } from './paginated-list';
+import { ContentSource } from '../shared/content-source.model';
+import { configureRequest, filterSuccessfulResponses, getRequestFromRequestHref } from '../shared/operators';
+import { ContentSourceSuccessResponse } from '../cache/response.models';
 
 @Injectable()
 export class CollectionDataService extends ComColDataService<Collection> {
@@ -57,4 +60,21 @@ export class CollectionDataService extends ComColDataService<Collection> {
       map((collections: RemoteData<PaginatedList<Collection>>) => collections.payload.totalElements > 0)
     );
   }
+
+  getHarvesterEndpoint(collectionId: string): Observable<string> {
+    return this.halService.getEndpoint(this.linkPath).pipe(
+      map((href: string) => `${href}/${collectionId}/harvester`)
+    );
+  }
+
+  getContentSource(collectionId: string): Observable<ContentSource> {
+    return this.getHarvesterEndpoint(collectionId).pipe(
+      map((href: string) => new ContentSourceRequest(this.requestService.generateRequestId(), href)),
+      configureRequest(this.requestService),
+      map((request: RestRequest) => request.href),
+      getRequestFromRequestHref(this.requestService),
+      filterSuccessfulResponses(),
+      map((response: ContentSourceSuccessResponse) => response.contentsource)
+    );
+  }
 }

src/app/core/data/content-source-response-parsing.service.ts

@@ -0,0 +1,19 @@
+import { Injectable } from '@angular/core';
+import { ResponseParsingService } from './parsing.service';
+import { RestRequest } from './request.models';
+import { DSpaceRESTV2Response } from '../dspace-rest-v2/dspace-rest-v2-response.model';
+import { ContentSourceSuccessResponse, RestResponse } from '../cache/response.models';
+import { DSpaceRESTv2Serializer } from '../dspace-rest-v2/dspace-rest-v2.serializer';
+import { ContentSource } from '../shared/content-source.model';
+
+@Injectable()
+export class ContentSourceResponseParsingService implements ResponseParsingService {
+
+  parse(request: RestRequest, data: DSpaceRESTV2Response): RestResponse {
+    const payload = data.payload;
+
+    const deserialized = new DSpaceRESTv2Serializer(ContentSource).deserialize(payload);
+    return new ContentSourceSuccessResponse(deserialized, data.statusCode, data.statusText);
+  }
+
+}

src/app/core/data/object-updates/object-updates.service.ts

@@ -93,14 +93,16 @@ export class ObjectUpdatesService {
     const objectUpdates = this.getObjectEntry(url);
     return objectUpdates.pipe(map((objectEntry) => {
       const fieldUpdates: FieldUpdates = {};
-      Object.keys(objectEntry.fieldStates).forEach((uuid) => {
-        let fieldUpdate = objectEntry.fieldUpdates[uuid];
-        if (isEmpty(fieldUpdate)) {
-          const identifiable = initialFields.find((object: Identifiable) => object.uuid === uuid);
-          fieldUpdate = { field: identifiable, changeType: undefined };
-        }
-        fieldUpdates[uuid] = fieldUpdate;
-      });
+      if (hasValue(objectEntry)) {
+        Object.keys(objectEntry.fieldStates).forEach((uuid) => {
+          let fieldUpdate = objectEntry.fieldUpdates[uuid];
+          if (isEmpty(fieldUpdate)) {
+            const identifiable = initialFields.find((object: Identifiable) => object.uuid === uuid);
+            fieldUpdate = {field: identifiable, changeType: undefined};
+          }
+          fieldUpdates[uuid] = fieldUpdate;
+        });
+      }
       return fieldUpdates;
     }))
   }

src/app/core/data/request.models.ts

@@ -18,6 +18,7 @@ import { MetadataschemaParsingService } from './metadataschema-parsing.service';
 import { MetadatafieldParsingService } from './metadatafield-parsing.service';
 import { URLCombiner } from '../url-combiner/url-combiner';
 import { TaskResponseParsingService } from '../tasks/task-response-parsing.service';
+import { ContentSourceResponseParsingService } from './content-source-response-parsing.service';
 
 /* tslint:disable:max-classes-per-file */
 
@@ -358,6 +359,16 @@ export class CreateRequest extends PostRequest {
   }
 }
 
+export class ContentSourceRequest extends GetRequest {
+  constructor(uuid: string, href: string) {
+    super(uuid, href);
+  }
+
+  getResponseParser(): GenericConstructor<ResponseParsingService> {
+    return ContentSourceResponseParsingService;
+  }
+}
+
 /**
  * Request to delete an object based on its identifier
  */

src/app/core/shared/content-source.model.ts

@@ -1,41 +1,51 @@
-import { v4 as uuid } from 'uuid';
+import { autoserialize, autoserializeAs } from 'cerialize';
+
+export enum ContentSourceHarvestType {
+  None = 'NONE',
+  Metadata = 'METADATA_ONLY',
+  MetadataAndRef = 'METADATA_AND_REF',
+  MetadataAndBitstreams = 'METADATA_AND_BITSTREAMS'
+}
 
 /**
  * A model class that holds information about the Content Source of a Collection
  */
 export class ContentSource {
   /**
-   * Unique identifier
+   * Unique identifier, this is necessary to store the ContentSource in FieldUpdates
+   * Because the ContentSource coming from the REST API doesn't have a UUID, we're using the selflink
    */
+  @autoserializeAs('self')
   uuid: string;
 
   /**
-   * Does this collection harvest its content from an external source ?
+   * OAI Provider / Source
    */
-  enabled = false;
-
-  /**
-   * OAI Provider
-   */
-  provider: string;
+  @autoserializeAs('oai_source')
+  oaiSource: string;
 
   /**
    * OAI Specific set ID
    */
-  set: string;
+  @autoserializeAs('oai_set_id')
+  oaiSetId: string;
 
   /**
-   * Metadata Format
+   * The ID of the metadata format used
    */
-  format = 'dc';
+  @autoserializeAs('metadata_config_id')
+  metadataConfigId = 'dc';
 
   /**
    * Type of content being harvested
+   * Defaults to 'NONE', meaning the collection doesn't harvest its content from an external source
    */
-  harvest = 3;
+  @autoserializeAs('harvest_type')
+  harvestType = ContentSourceHarvestType.None;
 
-  constructor() {
-    // TODO: Remove this once the Content Source is fetched from the REST API and a custom generated UUID is not necessary anymore
-    this.uuid = uuid();
-  }
+  /**
+   * The REST link to itself
+   */
+  @autoserialize
+  self: string;
 }