D-Net

    getMetrics (id: string):any {

        console.info("getProjectsMetrics in service");

        //let url = OpenaireProperties. getSearchAPIURLLast() + 'publications/' +id+"?format=json";

        let url = OpenaireProperties.getMetricsAPIURL()+"projects/"+id+"/clicks";

        let key = url;

        if (this._cache.has(key)) {

          return Observable.of(this._cache.get(key));

        }

        return this.http.get(url)

                    .map(res => <any> res.json())

                    .map(res => res['views'])

                    .do(res => {

                      this._cache.set(key, res);

                    });

    }