67478: LookupRelationService, external source tabs, list implementation

resources/i18n/en.json5

@@ -1466,6 +1466,8 @@
 
   "search.results.no-results-link": "quotes around it",
 
+  "search.results.empty": "Your search returned no results.",
+
 
 
   "search.sidebar.close": "Back to results",
@@ -1539,13 +1541,21 @@
 
   "submission.sections.describe.relationship-lookup.selected": "Selected {{ size }} items",
 
-  "submission.sections.describe.relationship-lookup.search-tab.tab-title.Author": "Search for Authors",
+  "submission.sections.describe.relationship-lookup.search-tab.tab-title.Author": "Local Authors ({{ count }})",
 
-  "submission.sections.describe.relationship-lookup.search-tab.tab-title.Journal": "Search for Journals",
+  "submission.sections.describe.relationship-lookup.search-tab.tab-title.Journal": "Local Journals ({{ count }})",
 
-  "submission.sections.describe.relationship-lookup.search-tab.tab-title.Journal Issue": "Search for Journal Issues",
+  "submission.sections.describe.relationship-lookup.search-tab.tab-title.Journal Issue": "Local Journal Issues ({{ count }})",
 
-  "submission.sections.describe.relationship-lookup.search-tab.tab-title.Journal Volume": "Search for Journal Volumes",
+  "submission.sections.describe.relationship-lookup.search-tab.tab-title.Journal Volume": "Local Journal Volumes ({{ count }})",
+
+  "submission.sections.describe.relationship-lookup.search-tab.tab-title.sherpaJournal": "Sherpa Journals ({{ count }})",
+
+  "submission.sections.describe.relationship-lookup.search-tab.tab-title.sherpaPublisher": "Sherpa Publishers ({{ count }})",
+
+  "submission.sections.describe.relationship-lookup.search-tab.tab-title.orcidV2": "ORCID ({{ count }})",
+
+  "submission.sections.describe.relationship-lookup.search-tab.tab-title.lcname": "LC Names ({{ count }})",
 
   "submission.sections.describe.relationship-lookup.selection-tab.tab-title": "Current Selection ({{ count }})",
 
@@ -1571,6 +1581,14 @@
 
   "submission.sections.describe.relationship-lookup.selection-tab.title.Journal Issue": "Selected Issue",
 
+  "submission.sections.describe.relationship-lookup.selection-tab.title.sherpaJournal": "Search Results",
+
+  "submission.sections.describe.relationship-lookup.selection-tab.title.sherpaPublisher": "Search Results",
+
+  "submission.sections.describe.relationship-lookup.selection-tab.title.orcidV2": "Search Results",
+
+  "submission.sections.describe.relationship-lookup.selection-tab.title.lcname": "Search Results",
+
   "submission.sections.describe.relationship-lookup.name-variant.notification.content": "Would you like to save \"{{ value }}\" as a name variant for this person so you and others can reuse it for future submissions? If you don\'t you can still use it for this submission.",
 
   "submission.sections.describe.relationship-lookup.name-variant.notification.confirm": "Save a new name variant",

src/app/core/core.module.ts

@@ -137,6 +137,7 @@ import { SidebarService } from '../shared/sidebar/sidebar.service';
 import { NormalizedExternalSource } from './cache/models/normalized-external-source.model';
 import { NormalizedExternalSourceEntry } from './cache/models/normalized-external-source-entry.model';
 import { ExternalSourceService } from './data/external-source.service';
+import { LookupRelationService } from './data/lookup-relation.service';
 
 export const restServiceFactory = (cfg: GlobalConfig, mocks: MockResponseMap, http: HttpClient) => {
   if (ENV_CONFIG.production) {
@@ -244,6 +245,7 @@ const PROVIDERS = [
   SelectableListService,
   RelationshipTypeService,
   ExternalSourceService,
+  LookupRelationService,
   // register AuthInterceptor as HttpInterceptor
   {
     provide: HTTP_INTERCEPTORS,

src/app/core/data/lookup-relation.service.ts

@@ -0,0 +1,94 @@
+import { ExternalSourceService } from './external-source.service';
+import { SearchService } from '../shared/search/search.service';
+import { concat, map, multicast, startWith, take, takeWhile } from 'rxjs/operators';
+import { PaginatedSearchOptions } from '../../shared/search/paginated-search-options.model';
+import { ReplaySubject } from 'rxjs/internal/ReplaySubject';
+import { RemoteData } from './remote-data';
+import { PaginatedList } from './paginated-list';
+import { SearchResult } from '../../shared/search/search-result.model';
+import { DSpaceObject } from '../shared/dspace-object.model';
+import { RelationshipOptions } from '../../shared/form/builder/models/relationship-options.model';
+import { Observable } from 'rxjs/internal/Observable';
+import { Item } from '../shared/item.model';
+import { PaginationComponentOptions } from '../../shared/pagination/pagination-component-options.model';
+import { getAllSucceededRemoteData, getRemoteDataPayload } from '../shared/operators';
+import { Injectable } from '@angular/core';
+import { ExternalSource } from '../shared/external-source.model';
+import { ExternalSourceEntry } from '../shared/external-source-entry.model';
+
+/**
+ * A service for retrieving local and external entries information during a relation lookup
+ */
+@Injectable()
+export class LookupRelationService {
+  /**
+   * The search config last used for retrieving local results
+   */
+  public searchConfig: PaginatedSearchOptions;
+
+  /**
+   * Pagination options for retrieving exactly one result
+   */
+  private singleResultOptions = Object.assign(new PaginationComponentOptions(), {
+    id: 'single-result-options',
+    pageSize: 1
+  });
+
+  constructor(protected externalSourceService: ExternalSourceService,
+              protected searchService: SearchService) {
+  }
+
+  /**
+   * Retrieve the available local entries for a relationship
+   * @param relationship    Relationship options
+   * @param searchOptions   Search options to filter results
+   * @param setSearchConfig Optionally choose if we should store the used search config in a local variable (defaults to true)
+   */
+  getLocalResults(relationship: RelationshipOptions, searchOptions: PaginatedSearchOptions, setSearchConfig = true): Observable<RemoteData<PaginatedList<SearchResult<Item>>>> {
+    const newConfig = Object.assign(new PaginatedSearchOptions({}), searchOptions,
+      { fixedFilter: relationship.filter, configuration: relationship.searchConfiguration }
+    );
+    if (setSearchConfig) {
+      this.searchConfig = newConfig;
+    }
+    return this.searchService.search(newConfig).pipe(
+      /* Make sure to only listen to the first x results, until loading is finished */
+      /* TODO: in Rxjs 6.4.0 and up, we can replace this with takeWhile(predicate, true) - see https://stackoverflow.com/a/44644237 */
+      multicast(
+        () => new ReplaySubject(1),
+        (subject) => subject.pipe(
+          takeWhile((rd: RemoteData<PaginatedList<SearchResult<DSpaceObject>>>) => rd.isLoading),
+          concat(subject.pipe(take(1)))
+        )
+      ) as any
+    )
+  }
+
+  /**
+   * Calculate the total local entries available for the given relationship
+   * @param relationship  Relationship options
+   * @param searchOptions Search options to filter results
+   */
+  getTotalLocalResults(relationship: RelationshipOptions, searchOptions: PaginatedSearchOptions): Observable<number> {
+    return this.getLocalResults(relationship, Object.assign(new PaginatedSearchOptions({}), searchOptions, { pagination: this.singleResultOptions }), false).pipe(
+      getAllSucceededRemoteData(),
+      getRemoteDataPayload(),
+      map((results: PaginatedList<SearchResult<Item>>) => results.totalElements),
+      startWith(0)
+    );
+  }
+
+  /**
+   * Calculate the total external entries available for a given external source
+   * @param externalSource  External Source
+   * @param searchOptions   Search options to filter results
+   */
+  getTotalExternalResults(externalSource: ExternalSource, searchOptions: PaginatedSearchOptions): Observable<number> {
+    return this.externalSourceService.getExternalSourceEntries(externalSource.id, Object.assign(new PaginatedSearchOptions({}), searchOptions, { pagination: this.singleResultOptions })).pipe(
+      getAllSucceededRemoteData(),
+      getRemoteDataPayload(),
+      map((results: PaginatedList<ExternalSourceEntry>) => results.totalElements),
+      startWith(0)
+    );
+  }
+}

src/app/entity-groups/research-entities/submission/item-list-elements/external-source-entry/external-source-entry-list-submission-element.component.html

@@ -1 +1,2 @@
-<div>Listable external source works! Display: {{object.value}}</div>
+<div>{{object.display}}</div>
+<div *ngIf="uri"><a [href]="uri.value">{{uri.value}}</a></div>

src/app/entity-groups/research-entities/submission/item-list-elements/external-source-entry/external-source-entry-list-submission-element.component.ts

@@ -3,7 +3,9 @@ import { ExternalSourceEntry } from '../../../../../core/shared/external-source-
 import { listableObjectComponent } from '../../../../../shared/object-collection/shared/listable-object/listable-object.decorator';
 import { ViewMode } from '../../../../../core/shared/view-mode.model';
 import { Context } from '../../../../../core/shared/context.model';
-import { Component } from '@angular/core';
+import { Component, OnInit } from '@angular/core';
+import { Metadata } from '../../../../../core/shared/metadata.utils';
+import { MetadataValue } from '../../../../../core/shared/metadata.models';
 
 @listableObjectComponent(ExternalSourceEntry, ViewMode.ListElement, Context.SubmissionModal)
 @Component({
@@ -11,6 +13,13 @@ import { Component } from '@angular/core';
   styleUrls: ['./external-source-entry-list-submission-element.component.scss'],
   templateUrl: './external-source-entry-list-submission-element.component.html'
 })
-export class ExternalSourceEntryListSubmissionElementComponent extends AbstractListableElementComponent<ExternalSourceEntry> {
+export class ExternalSourceEntryListSubmissionElementComponent extends AbstractListableElementComponent<ExternalSourceEntry> implements OnInit {
+  /**
+   * The metadata value for the object's uri
+   */
+  uri: MetadataValue;
 
+  ngOnInit(): void {
+    this.uri = Metadata.first(this.object.metadata, 'dc.identifier.uri');
+  }
 }

src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/dynamic-lookup-relation-modal.component.html

@@ -7,7 +7,7 @@
 </div>
 <div class="modal-body">
     <ngb-tabset>
-        <ngb-tab [title]="'submission.sections.describe.relationship-lookup.search-tab.tab-title.' + label | translate">
+        <ngb-tab [title]="'submission.sections.describe.relationship-lookup.search-tab.tab-title.' + label | translate  : {count: (totalInternal$ | async)}">
             <ng-template ngbTabContent>
                 <ds-dynamic-lookup-relation-search-tab
                         [selection$]="selection$"
@@ -21,6 +21,20 @@
                 </ds-dynamic-lookup-relation-search-tab>
             </ng-template>
         </ngb-tab>
+        <ngb-tab *ngFor="let source of (externalSourcesRD$ | async)?.payload?.page; let idx = index"
+                 [title]="'submission.sections.describe.relationship-lookup.search-tab.tab-title.' + source.id | translate  : {count: (totalExternal$ | async)[idx]}">
+            <ng-template ngbTabContent>
+                <ds-dynamic-lookup-relation-external-source-tab
+                        [listId]="listId"
+                        [repeatable]="repeatable"
+                        [context]="context"
+                        [externalSource]="source"
+                        (selectObject)="select($event)"
+                        (deselectObject)="deselect($event)"
+                        class="d-block pt-3">
+                </ds-dynamic-lookup-relation-external-source-tab>
+            </ng-template>
+        </ngb-tab>
         <ngb-tab [title]="'submission.sections.describe.relationship-lookup.selection-tab.tab-title' | translate : {count: (selection$ | async)?.length}">
             <ng-template ngbTabContent>
                 <ds-dynamic-lookup-relation-selection-tab

src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/dynamic-lookup-relation-modal.component.ts

@@ -1,5 +1,5 @@
 import { Component, NgZone, OnDestroy, OnInit } from '@angular/core';
-import { combineLatest, Observable, Subscription } from 'rxjs';
+import { combineLatest, Observable, Subscription, zip as observableZip } from 'rxjs';
 import { NgbActiveModal } from '@ng-bootstrap/ng-bootstrap';
 import { hasValue } from '../../../../empty.util';
 import { map, skip, switchMap, take } from 'rxjs/operators';
@@ -11,7 +11,11 @@ import { ListableObject } from '../../../../object-collection/shared/listable-ob
 import { RelationshipOptions } from '../../models/relationship-options.model';
 import { SearchResult } from '../../../../search/search-result.model';
 import { Item } from '../../../../../core/shared/item.model';
-import { getRemoteDataPayload, getSucceededRemoteData } from '../../../../../core/shared/operators';
+import {
+  getAllSucceededRemoteData,
+  getRemoteDataPayload,
+  getSucceededRemoteData
+} from '../../../../../core/shared/operators';
 import { AddRelationshipAction, RemoveRelationshipAction, UpdateRelationshipAction } from './relationship.actions';
 import { RelationshipService } from '../../../../../core/data/relationship.service';
 import { RelationshipTypeService } from '../../../../../core/data/relationship-type.service';
@@ -20,6 +24,11 @@ import { AppState } from '../../../../../app.reducer';
 import { Context } from '../../../../../core/shared/context.model';
 import { Relationship } from '../../../../../core/shared/item-relationships/relationship.model';
 import { MetadataValue } from '../../../../../core/shared/metadata.models';
+import { LookupRelationService } from '../../../../../core/data/lookup-relation.service';
+import { RemoteData } from '../../../../../core/data/remote-data';
+import { PaginatedList } from '../../../../../core/data/paginated-list';
+import { ExternalSource } from '../../../../../core/shared/external-source.model';
+import { ExternalSourceService } from '../../../../../core/data/external-source.service';
 
 @Component({
   selector: 'ds-dynamic-lookup-relation-modal',
@@ -46,11 +55,29 @@ export class DsDynamicLookupRelationModalComponent implements OnInit, OnDestroy
     [uuid: string]: Subscription
   } = {};
 
+  /**
+   * A list of the available external sources configured for this relationship
+   */
+  externalSourcesRD$: Observable<RemoteData<PaginatedList<ExternalSource>>>;
+
+  /**
+   * The total amount of internal items for the current options
+   */
+  totalInternal$: Observable<number>;
+
+  /**
+   * The total amount of results for each external source using the current options
+   */
+  totalExternal$: Observable<number[]>;
+
   constructor(
     public modal: NgbActiveModal,
     private selectableListService: SelectableListService,
     private relationshipService: RelationshipService,
     private relationshipTypeService: RelationshipTypeService,
+    private externalSourceService: ExternalSourceService,
+    private lookupRelationService: LookupRelationService,
+    private searchConfigService: SearchConfigurationService,
     private zone: NgZone,
     private store: Store<AppState>
   ) {
@@ -67,6 +94,9 @@ export class DsDynamicLookupRelationModalComponent implements OnInit, OnDestroy
       this.context = Context.SubmissionModal;
     }
 
+    this.externalSourcesRD$ = this.externalSourceService.findAll();
+
+    this.setTotals();
     // this.setExistingNameVariants();
   }
 
@@ -148,6 +178,28 @@ export class DsDynamicLookupRelationModalComponent implements OnInit, OnDestroy
     )
   }
 
+  /**
+   * Calculate and set the total entries available for each tab
+   */
+  setTotals() {
+    this.totalInternal$ = this.searchConfigService.paginatedSearchOptions.pipe(
+      switchMap((options) => this.lookupRelationService.getTotalLocalResults(this.relationshipOptions, options))
+    );
+
+    const externalSourcesAndOptions$ = combineLatest(
+      this.externalSourcesRD$.pipe(
+        getAllSucceededRemoteData(),
+        getRemoteDataPayload()
+      ),
+      this.searchConfigService.paginatedSearchOptions
+    );
+
+    this.totalExternal$ = externalSourcesAndOptions$.pipe(
+      switchMap(([sources, options]) =>
+        observableZip(...sources.page.map((source: ExternalSource) => this.lookupRelationService.getTotalExternalResults(source, options))))
+    );
+  }
+
   ngOnDestroy() {
     Object.values(this.subMap).forEach((subscription) => subscription.unsubscribe());
   }

src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/external-source-tab/dynamic-lookup-relation-external-source-tab.component.html

@@ -4,20 +4,28 @@
     <ds-page-size-selector></ds-page-size-selector>
   </div>
   <div class="col-8">
-    <div *ngIf="(entriesRD$ | async)?.payload.page < 1">
-      {{'submission.sections.describe.relationship-lookup.selection-tab.no-selection' | translate}}
-    </div>
-    <div *ngIf="(entriesRD$ | async)?.payload.page.length >= 1">
-      <h3>{{ 'submission.sections.describe.relationship-lookup.selection-tab.title.' + label | translate}}</h3>
-      <ds-viewable-collection [objects]="entriesRD$ | async"
+    <ds-search-form [query]="(searchConfigService.paginatedSearchOptions | async)?.query" [inPlaceSearch]="true"></ds-search-form>
+    <div>
+      <h3>{{ 'submission.sections.describe.relationship-lookup.selection-tab.title.' + externalSource.id | translate}}</h3>
+      <ng-container *ngVar="(entriesRD$ | async) as entriesRD">
+        <ds-viewable-collection *ngIf="entriesRD?.hasSucceeded && !entriesRD?.isLoading && entriesRD?.payload?.page.length > 0" @fadeIn
+                                [objects]="entriesRD"
                                 [selectable]="true"
                                 [selectionConfig]="{ repeatable: repeatable, listId: listId }"
                                 [config]="initialPagination"
                                 [hideGear]="true"
                                 [context]="context"
                                 (deselectObject)="deselectObject.emit($event)"
-                              (selectObject)="selectObject.emit($event)"
-      ></ds-viewable-collection>
+                                (selectObject)="selectObject.emit($event)">
+        </ds-viewable-collection>
+        <ds-loading *ngIf="!entriesRD || !entriesRD?.payload || entriesRD?.isLoading"
+                    message="{{'loading.search-results' | translate}}"></ds-loading>
+        <ds-error   *ngIf="entriesRD?.hasFailed && (!entriesRD?.error || entriesRD?.error?.statusCode != 400)"
+                    message="{{'error.search-results' | translate}}"></ds-error>
+        <div *ngIf="entriesRD?.payload?.page.length == 0 || entriesRD?.error?.statusCode == 400">
+          {{ 'search.results.empty' | translate }}
+        </div>
+      </ng-container>
     </div>
   </div>
 </div>

src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/external-source-tab/dynamic-lookup-relation-external-source-tab.component.ts

@@ -10,9 +10,10 @@ import { ExternalSourceEntry } from '../../../../../../core/shared/external-sour
 import { ExternalSource } from '../../../../../../core/shared/external-source.model';
 import { switchMap } from 'rxjs/operators';
 import { PaginatedSearchOptions } from '../../../../../search/paginated-search-options.model';
-import { PaginationComponentOptions } from '../../../../../pagination/pagination-component-options.model';
 import { Context } from '../../../../../../core/shared/context.model';
 import { ListableObject } from '../../../../../object-collection/shared/listable-object.model';
+import { fadeIn, fadeInOut } from '../../../../../animations/fade';
+import { PaginationComponentOptions } from '../../../../../pagination/pagination-component-options.model';
 
 @Component({
   selector: 'ds-dynamic-lookup-relation-external-source-tab',
@@ -23,6 +24,10 @@ import { ListableObject } from '../../../../../object-collection/shared/listable
       provide: SEARCH_CONFIG_SERVICE,
       useClass: SearchConfigurationService
     }
+  ],
+  animations: [
+    fadeIn,
+    fadeInOut
   ]
 })
 

src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.html

@@ -56,8 +56,8 @@
             </div>
         </div>
         <ds-search-results [searchResults]="(resultsRD$ | async)"
-                           [sortConfig]="this.searchConfig?.sort"
-                           [searchConfig]="this.searchConfig"
+                           [sortConfig]="this.lookupRelationService.searchConfig?.sort"
+                           [searchConfig]="this.lookupRelationService.searchConfig"
                            [selectable]="true"
                            [selectionConfig]="{ repeatable: repeatable, listId: listId }"
                            [linkType]="linkTypes.ExternalLink"

src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.ts

@@ -11,7 +11,7 @@ import { RelationshipOptions } from '../../../models/relationship-options.model'
 import { PaginationComponentOptions } from '../../../../../pagination/pagination-component-options.model';
 import { ListableObject } from '../../../../../object-collection/shared/listable-object.model';
 import { SearchService } from '../../../../../../core/shared/search/search.service';
-import { Router } from '@angular/router';
+import { ActivatedRoute, Router } from '@angular/router';
 import { SelectableListService } from '../../../../../object-list/selectable-list/selectable-list.service';
 import { hasValue, isNotEmpty } from '../../../../../empty.util';
 import { concat, map, multicast, switchMap, take, takeWhile, tap } from 'rxjs/operators';
@@ -20,6 +20,7 @@ import { getSucceededRemoteData } from '../../../../../../core/shared/operators'
 import { RouteService } from '../../../../../../core/services/route.service';
 import { CollectionElementLinkType } from '../../../../../object-collection/collection-element-link.type';
 import { Context } from '../../../../../../core/shared/context.model';
+import { LookupRelationService } from '../../../../../../core/data/lookup-relation.service';
 
 @Component({
   selector: 'ds-dynamic-lookup-relation-search-tab',
@@ -43,7 +44,6 @@ export class DsDynamicLookupRelationSearchTabComponent implements OnInit, OnDest
   @Output() deselectObject: EventEmitter<ListableObject> = new EventEmitter<ListableObject>();
   @Output() selectObject: EventEmitter<ListableObject> = new EventEmitter<ListableObject>();
   resultsRD$: Observable<RemoteData<PaginatedList<SearchResult<Item>>>>;
-  searchConfig: PaginatedSearchOptions;
   allSelected: boolean;
   someSelected$: Observable<boolean>;
   selectAllLoading: boolean;
@@ -57,9 +57,11 @@ export class DsDynamicLookupRelationSearchTabComponent implements OnInit, OnDest
   constructor(
     private searchService: SearchService,
     private router: Router,
+    private route: ActivatedRoute,
     private selectableListService: SelectableListService,
     private searchConfigService: SearchConfigurationService,
     private routeService: RouteService,
+    protected lookupRelationService: LookupRelationService
   ) {
   }
 
@@ -70,29 +72,13 @@ export class DsDynamicLookupRelationSearchTabComponent implements OnInit, OnDest
 
     this.someSelected$ = this.selection$.pipe(map((selection) => isNotEmpty(selection)));
     this.resultsRD$ = this.searchConfigService.paginatedSearchOptions.pipe(
-      map((options) => {
-        return Object.assign(new PaginatedSearchOptions({}), options, { fixedFilter: this.relationship.filter, configuration: this.relationship.searchConfiguration })
-      }),
-      switchMap((options) => {
-        this.searchConfig = options;
-        return this.searchService.search(options).pipe(
-          /* Make sure to only listen to the first x results, until loading is finished */
-          /* TODO: in Rxjs 6.4.0 and up, we can replace this with takeWhile(predicate, true) - see https://stackoverflow.com/a/44644237 */
-          multicast(
-            () => new ReplaySubject(1),
-            (subject) => subject.pipe(
-              takeWhile((rd: RemoteData<PaginatedList<SearchResult<DSpaceObject>>>) => rd.isLoading),
-              concat(subject.pipe(take(1)))
-            )
-          ) as any
-        )
-      })
+      switchMap((options) => this.lookupRelationService.getLocalResults(this.relationship, options))
     );
   }
 
   resetRoute() {
     this.router.navigate([], {
-      queryParams: Object.assign({}, { page: 1, pageSize: this.initialPagination.pageSize }),
+      queryParams: Object.assign({}, { pageSize: this.initialPagination.pageSize }, this.route.snapshot.queryParams, { page: 1 })
     });
   }
 
@@ -124,7 +110,7 @@ export class DsDynamicLookupRelationSearchTabComponent implements OnInit, OnDest
       currentPage: 1,
       pageSize: 9999
     });
-    const fullSearchConfig = Object.assign(this.searchConfig, { pagination: fullPagination });
+    const fullSearchConfig = Object.assign(this.lookupRelationService.searchConfig, { pagination: fullPagination });
     const results$ = this.searchService.search(fullSearchConfig) as Observable<RemoteData<PaginatedList<SearchResult<Item>>>>;
     results$.pipe(
       getSucceededRemoteData(),

src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/selection-tab/dynamic-lookup-relation-selection-tab.component.ts

@@ -35,17 +35,11 @@ export class DsDynamicLookupRelationSelectionTabComponent {
   @Output() deselectObject: EventEmitter<ListableObject> = new EventEmitter<ListableObject>();
   @Output() selectObject: EventEmitter<ListableObject> = new EventEmitter<ListableObject>();
 
-  initialPagination = Object.assign(new PaginationComponentOptions(), {
-    id: 'submission-relation-list',
-    pageSize: 5
-  });
-
   constructor(private router: Router,
               private searchConfigService: SearchConfigurationService) {
   }
 
   ngOnInit() {
-    this.resetRoute();
     this.selectionRD$ = this.searchConfigService.paginatedSearchOptions
       .pipe(
         map((options: PaginatedSearchOptions) => options.pagination),
@@ -69,10 +63,4 @@ export class DsDynamicLookupRelationSelectionTabComponent {
         })
       )
   }
-
-  resetRoute() {
-    this.router.navigate([], {
-      queryParams: Object.assign({}, { page: 1, pageSize: this.initialPagination.pageSize }),
-    });
-  }
 }