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59695: Refactored getFirstItemFor

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This commit is contained in:
Kristof De Langhe
2019-02-13 10:41:52 +01:00
parent 40342af029
commit 394a327611
4 changed files with 17 additions and 7 deletions
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2
src/app/+browse-by/+browse-by-date-page/browse-by-date-page.component.spec.ts
View File

@@ -39,7 +39,7 @@ describe('BrowseByDatePageComponent', () => {
const mockBrowseService = {
getBrowseEntriesFor: (options: BrowseEntrySearchOptions) => toRemoteData([]),
getBrowseItemsFor: (value: string, options: BrowseEntrySearchOptions) => toRemoteData([firstItem]),
getFirstItemFor: () => toRemoteData([firstItem])
getFirstItemFor: () => observableOf(new RemoteData(false, false, true, undefined, firstItem))
};
const mockDsoService = {

6
src/app/+browse-by/+browse-by-date-page/browse-by-date-page.component.ts
View File

@@ -75,10 +75,10 @@ export class BrowseByDatePageComponent extends BrowseByMetadataPageComponent {
*/
updateStartsWithOptions(definition: string, metadataField: string, scope?: string) {
this.subs.push(
this.browseService.getFirstItemFor(definition, scope).subscribe((firstItemRD: RemoteData<PaginatedList<Item>>) => {
this.browseService.getFirstItemFor(definition, scope).subscribe((firstItemRD: RemoteData<Item>) => {
let lowerLimit = this.config.browseBy.defaultLowerLimit;
if (firstItemRD.payload.page.length > 0) {
const date = firstItemRD.payload.page[0].findMetadata(metadataField);
if (hasValue(firstItemRD.payload)) {
const date = firstItemRD.payload.findMetadata(metadataField);
if (hasValue(date) && hasValue(+date.split('-')[0])) {
lowerLimit = +date.split('-')[0];
}

7
src/app/core/browse/browse.service.ts
View File

@@ -26,7 +26,7 @@ import { BrowseEntry } from '../shared/browse-entry.model';
import { HALEndpointService } from '../shared/hal-endpoint.service';
import {
configureRequest,
filterSuccessfulResponses, getBrowseDefinitionLinks,
filterSuccessfulResponses, getBrowseDefinitionLinks, getFirstOccurrence,
getRemoteDataPayload,
getRequestFromSelflink,
getResponseFromSelflink
@@ -170,7 +170,7 @@ export class BrowseService {
* @param definition
* @param scope
*/
getFirstItemFor(definition: string, scope?: string): Observable<RemoteData<PaginatedList<Item>>> {
getFirstItemFor(definition: string, scope?: string): Observable<RemoteData<Item>> {
return this.getBrowseDefinitions().pipe(
getBrowseDefinitionLinks(definition),
hasValueOperator(),
@@ -188,7 +188,8 @@ export class BrowseService {
}
return href;
}),
getBrowseItemsFor(this.requestService, this.responseCache, this.rdb)
getBrowseItemsFor(this.requestService, this.responseCache, this.rdb),
getFirstOccurrence()
);
}

9
src/app/core/shared/operators.ts
View File

@@ -88,3 +88,12 @@ export const getBrowseDefinitionLinks = (definitionID: string) =>
}
})
);
/**
* Get the first occurrence of an object within a paginated list
*/
export const getFirstOccurrence = () =>
<T extends DSpaceObject>(source: Observable<RemoteData<PaginatedList<T>>>): Observable<RemoteData<T>> =>
source.pipe(
map((rd) => Object.assign(rd, { payload: rd.payload.page.length > 0 ? rd.payload.page[0] : undefined }))
);