69432: Immediate patch

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

@@ -44,7 +44,7 @@ import {
   FindByIDRequest,
   FindListOptions,
   FindListRequest,
-  GetRequest
+  GetRequest, PatchRequest
 } from './request.models';
 import { RequestEntry } from './request.reducer';
 import { RequestService } from './request.service';
@@ -337,6 +337,32 @@ export abstract class DataService<T extends CacheableObject> {
     this.objectCache.addPatch(href, operations);
   }
 
+  /**
+   * Send out an immediate patch request, instead of adding to the object cache first
+   * This is useful in cases where you need the returned response and an object cache update is not needed
+   * @param dso         The dso to send the patch to
+   * @param operations  The patch operations
+   */
+  immediatePatch(dso: T, operations: Operation[]): Observable<RestResponse> {
+    const requestId = this.requestService.generateRequestId();
+
+    const hrefObs = this.halService.getEndpoint(this.linkPath).pipe(
+      map((endpoint: string) => this.getIDHref(endpoint, dso.uuid)));
+
+    hrefObs.pipe(
+      find((href: string) => hasValue(href)),
+      map((href: string) => {
+        const request = new PatchRequest(requestId, href, operations);
+        this.requestService.configure(request);
+      })
+    ).subscribe();
+
+    return this.requestService.getByUUID(requestId).pipe(
+      find((request: RequestEntry) => request.completed),
+      map((request: RequestEntry) => request.response)
+    );
+  }
+
   /**
    * Add a new patch to the object cache
    * The patch is derived from the differences between the given object and its version in the object cache