list songs

WEB/src/app/data/odata.service.ts

@@ -0,0 +1,29 @@
+import { ODataService, ODataQuery } from 'odata-v4-ng';
+import { Observable } from 'rxjs';
+import { map } from 'rxjs/operators';
+import { base } from './urls';
+
+export class OdataService {
+  private url: string;
+  constructor(private odataService: ODataService, private entity: string) {
+    this.url = base + '/odata/';
+  }
+
+  public list<TResponse>(): Observable<TResponse[]> {
+    const query = new ODataQuery(this.odataService, this.url).entitySet(
+      this.entity
+    );
+    const get = query.get().pipe(map(_ => _.toPropertyValue<TResponse[]>()));
+
+    return get;
+  }
+
+  public get<TResponse>(id: number): Observable<TResponse> {
+    const query = new ODataQuery(this.odataService, this.url)
+      .entitySet(this.entity)
+      .entityKey(id);
+    const get = query.get().pipe(map(_ => _.toEntity<TResponse>()));
+
+    return get;
+  }
+}