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argiro.kok
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import {Injectable} from '@angular/core';
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55964
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argiro.kok
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import {HttpClient, HttpErrorResponse} from "@angular/common/http";
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argiro.kok
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import {Observable, throwError, of, BehaviorSubject, from, Subscriber} from 'rxjs';
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50169
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argiro.kok
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import {AutoCompleteValue} from '../../searchPages/searchUtils/searchHelperClasses.class';
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argiro.kok
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import 'rxjs/add/observable/zip';
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50169
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argiro.kok
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58064
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k.triantaf
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import {EnvProperties} from '../properties/env-properties';
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55964
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argiro.kok
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import {catchError, map} from "rxjs/operators";
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argiro.kok
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59072
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konstantin
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@Injectable({ providedIn: 'root' })
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argiro.kok
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export class ISVocabulariesService {
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konstantin
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private vocabularies: Map<string, BehaviorSubject<AutoCompleteValue[]>> = new Map<string, BehaviorSubject<AutoCompleteValue[]>>();
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private provenanceActionVocabulary: BehaviorSubject<{}> = new BehaviorSubject(null);
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private subscriptions = [];
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konstantin
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constructor(private http: HttpClient) {}
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argiro.kok
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ngOnDestroy() {
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this.clearSubscriptions();
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}
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clearSubscriptions() {
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this.subscriptions.forEach(subscription => {
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if (subscription instanceof Subscriber) {
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subscription.unsubscribe();
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}
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});
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}
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getVocabularyByType(field: string, entity: string, properties: EnvProperties): Observable<any> {
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//console.log("getVocabulary field: "+ field + " for entity: "+ entity);
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var file = "";
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var vocabulary = "";
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if (field == "lang") {
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// file="languages.json";
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// return this.getVocabularyFromFile(file);
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vocabulary = "dnet:languages.json";
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//return this.getVocabularyFromService(vocabulary, properties);
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return from(this.getVocabularyFromServiceAsync(vocabulary, properties));
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} else if (field == "type" && (entity == "publication")) {
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// file = "publicationTypes.json";
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// return this.getVocabularyFromFile(file);
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vocabulary = "dnet:publication_resource.json";
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//return this.getVocabularyFromService(vocabulary, properties);
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return from(this.getVocabularyFromServiceAsync(vocabulary, properties));
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} else if (field == "type" && (entity == "dataset")) {
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// file = "dnet:dataCite_resource.json";
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// return this.getVocabularyFromFile(file);
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vocabulary = "dnet:dataCite_resource.json";
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//return this.getVocabularyFromService(vocabulary, properties);
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return from(this.getVocabularyFromServiceAsync(vocabulary, properties));
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} else if (field == "type" && (entity == "software" || entity == "other")) {
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return of([]);
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} else if (field == "type" && entity == "result" ) {
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//return Observable.zip(this.getVocabularyFromService("dnet:publication_resource.json", properties),this.getVocabularyFromService("dnet:dataCite_resource.json", properties));
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return Observable.zip(from(this.getVocabularyFromServiceAsync("dnet:publication_resource.json", properties)),from(this.getVocabularyFromServiceAsync("dnet:dataCite_resource.json", properties)));
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} else if (field == "access" && (entity == "publication" || entity == "dataset" || entity == "software" || entity == "other" || entity == "result")) {
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// file= "accessMode.json";
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// return this.getVocabularyFromFile(file);
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vocabulary = "dnet:access_modes.json";
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//return this.getVocabularyFromService(vocabulary, properties);
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return from(this.getVocabularyFromServiceAsync(vocabulary, properties));
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} else if ((field == "type") && (entity == "dataprovider")) {
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// file = "dataProviderType.json";
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// return this.getVocabularyFromFile(file);
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vocabulary = "dnet:datasource_typologies.json";
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//return this.getVocabularyFromService(vocabulary, properties);
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return from(this.getVocabularyFromServiceAsync(vocabulary, properties));
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} else if (field == "compatibility" && (entity == "dataprovider")) {
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// file = "dataProviderCompatibility.json";
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// return this.getVocabularyFromFile(file);
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vocabulary = "dnet:datasourceCompatibilityLevel.json";
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//return this.getVocabularyFromService(vocabulary, properties);
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return from(this.getVocabularyFromServiceAsync(vocabulary, properties));
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} else if (field == "country") {
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// file = "countries.json";
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// return this.getVocabularyFromFile(file);
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vocabulary = "dnet:countries.json";
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//return this.getVocabularyFromService(vocabulary, properties);
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return from(this.getVocabularyFromServiceAsync(vocabulary, properties));
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}
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return null;
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}
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async getVocabularyFromServiceAsync(vocabularyName: string, properties: EnvProperties): Promise<AutoCompleteValue[]> {
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if(!this.vocabularies.has(vocabularyName)) {
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await new Promise<any>(resolve => {
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this.vocabularies.set(vocabularyName, new BehaviorSubject<any>(null));
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this.subscriptions.push(this.getVocabularyFromService(vocabularyName, properties).subscribe(
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vocabularyRes => {
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this.vocabularies.get(vocabularyName).next(vocabularyRes);
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resolve();
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}, error => {
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this.vocabularies.get(vocabularyName).next(null);
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resolve();
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}
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));
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});
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this.clearSubscriptions();
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}
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return this.vocabularies.get(vocabularyName).getValue();
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}
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getVocabularyFromService(vocabularyName: string, properties: EnvProperties): Observable<AutoCompleteValue[]> {
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let url = properties.vocabulariesAPI + vocabularyName;
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return this.http.get((properties.useLongCache) ? (properties.cacheUrl + encodeURIComponent(url)) : url)
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//.map(res => <any> res.json())
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.pipe(map(res => res['terms']))
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.pipe(map(res => this.parse(res, vocabularyName)))
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.pipe(catchError(this.handleError));
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}
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parse(data: any, vocabularyName: string): AutoCompleteValue[] {
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var array: AutoCompleteValue[] = []
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for (var i = 0; i < data.length; i++) {
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var value: AutoCompleteValue = new AutoCompleteValue();
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value.id = data[i].englishName;//data[i].code;
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if (vocabularyName == 'dnet:countries.json') { //use Country code instead of country name
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value.id = data[i].code;
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}
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value.label = data[i].englishName;
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array.push(value);
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}
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return array;
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}
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getProvenanceActionVocabulary(properties: EnvProperties): Observable<any> {
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let vocabulary = "dnet:provenanceActions.json";
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return from(this.getProvenanceActionVocabularyFromServiceAsync(vocabulary, properties));
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}
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async getProvenanceActionVocabularyFromServiceAsync (vocabularyName: string, properties: EnvProperties): Promise<{}> {
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if(!this.provenanceActionVocabulary || !this.provenanceActionVocabulary.getValue()) {
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await new Promise<any>(resolve => {
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this.subscriptions.push(this.getProvenanceActionVocabularyFromService(vocabularyName, properties).subscribe(
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vocabularyRes => {
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this.provenanceActionVocabulary.next(vocabularyRes);
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resolve();
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},
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error => {
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this.provenanceActionVocabulary.next(null);
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resolve();
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}
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));
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});
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this.clearSubscriptions();
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}
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return this.provenanceActionVocabulary.getValue();
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}
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getProvenanceActionVocabularyFromService (vocabularyName: string, properties: EnvProperties): any {
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let url = properties.vocabulariesAPI+vocabularyName;
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return this.http.get((properties.useLongCache) ? (properties.cacheUrl + encodeURIComponent(url)) : url)
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.pipe(map(res => res['terms']))
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.pipe(map(res => this.parseProvenanceActionVocabulary(res)));
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}
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parseProvenanceActionVocabulary(terms: any) {
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var provenanceActionVocabulary: {} = {};
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for(let term of terms) {
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provenanceActionVocabulary[term.code] = term.englishName;
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}
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return provenanceActionVocabulary;
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}
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private handleError(error: HttpErrorResponse) {
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// in a real world app, we may send the error to some remote logging infrastructure
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// instead of just logging it to the console
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console.log(error);
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return throwError(error || 'Server error');
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}
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}
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