CST-5253] Finished functionalities

src/app/core/submission/resolver/submission-object.resolver.ts

@@ -0,0 +1,43 @@
+import { DSpaceObject } from './../../shared/dspace-object.model';
+import { followLink } from './../../../shared/utils/follow-link-config.model';
+import { ChildHALResource } from './../../shared/child-hal-resource.model';
+import { Injectable } from '@angular/core';
+import { ActivatedRouteSnapshot, Resolve, RouterStateSnapshot } from '@angular/router';
+import { Observable } from 'rxjs';
+import { Store } from '@ngrx/store';
+import { switchMap } from 'rxjs/operators';
+import { DataService } from '../../data/data.service';
+import { RemoteData } from '../../data/remote-data';
+import { getFirstCompletedRemoteData } from '../../shared/operators';
+
+/**
+ * This class represents a resolver that requests a specific item before the route is activated
+ */
+@Injectable()
+export class SubmissionObjectResolver<T> implements Resolve<RemoteData<T>> {
+    constructor(
+        protected dataService: DataService<any>,
+        protected store: Store<any>
+    ) {
+    }
+
+    /**
+     * Method for resolving an item based on the parameters in the current route
+     * @param {ActivatedRouteSnapshot} route The current ActivatedRouteSnapshot
+     * @param {RouterStateSnapshot} state The current RouterStateSnapshot
+     * @returns Observable<<RemoteData<Item>> Emits the found item based on the parameters in the current route,
+     * or an error if something went wrong
+     */
+    resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<RemoteData<T>> {
+        const itemRD$ = this.dataService.findById(route.params.id,
+            true,
+            false,
+            followLink('item'),
+        ).pipe(
+            getFirstCompletedRemoteData(),
+            switchMap((wfiRD: RemoteData<any>) => wfiRD.payload.item as Observable<RemoteData<T>>),
+            getFirstCompletedRemoteData()
+        );
+        return itemRD$;
+    }
+}