- added earliestPublicationDate for App/Models/Dataset.ts

- new classes TokenWorkerService.ts, TokenWorker.ts and ResumptionToken.ts for using REDIS with paging OAI results
- deletd public/asstes2/langCodeMap.xml: integrated it directly in datasetxml2oai-pmh.xslt
- added redis npm package
- added TokenWorkerProvider.ts for using singleton of TokenWorkerService inside OaiController.ts
- added config/oai.ts for oai related configs from .env-file
- adapted XmlModel.ts for grting domDocument from database

app/Utils/utility-functions.ts

@@ -19,3 +19,8 @@ export function getDomain(host: string): string {
     myHost = myHost.replace(new RegExp(/^.*:\/\//i, 'g'), '');
     return myHost;
 }
+
+export function preg_match(regex: RegExp, str: string) {
+    const result: boolean = regex.test(str);
+    return result;
+}