Breeze executeLocally给出错误＆＃39; undefined不是函数＆＃39;

Question

我正在尝试在微风中使用执行本地功能，它给我错误'undefined is not a function'。以下是两个函数 - 在第一个函数中，我从数据库中检索数据，在第二个函数中，我尝试从本地缓存中获取数据。

	function getServices(clientId, currentLocation, activeStatus) {
			var self = this;

			var Predicate = breeze.Predicate;
			var whereClause = Predicate.create("activeStatus", "==", parseInt(activeStatus));

			return EntityQuery.from('Services')
                                .withParameters({ clientId: clientId, currentLocation: currentLocation })
                                .where(whereClause)
                                .expand("Location")
                                .using(self.manager)
                                .execute()
                                .then(querySucceeded, this._queryFailed);

			function querySucceeded(data) {
				if (data.results.length > 0) {
				    services = data.results;
				}
				logSuccess(localize.getLocalizedString('_RetrievedHolidays_'), services, true);
				return services;
			}
		}

function getServicesLocally(clientId, currentLocation, activeStatus, category, type, includeSubLocations) {
		    var self = this;
		    services = [];

		    var Predicate = breeze.Predicate;
		    var p1 = Predicate.create("activeStatus", "==", parseInt(activeStatus));
		    var p2 = Predicate.create("fkServiceTypeId", "==", parseInt(type));
		    var p3 = Predicate.create("fkServiceCategoryId", "==", parseInt(category));
		    var whereClause = p1;
		    if (type != 0)
		        whereClause = whereClause.and(p2);
		    if (category != 0)
		        whereClause = whereClause.and(p3);


		    return EntityQuery.from('Services')
                                .withParameters({ clientId: clientId, currentLocation: currentLocation })
                                .where(whereClause)
                                .orderBy('location.fkLocationTypeId')
                                .using(self.manager)
                                .executeLocally()
                                .then(querySucceeded, this._queryFailed);

		    function querySucceeded(data) {
		        if (data.results.length > 0) {
		            services = data.results;
		            //if sub-locations are to be ommitted, remove the services of the sub-locations
		            if (!includeSubLocations) {
		                services = removeServicesOfSubLocationsFromServiceList(services);
		            }
		        }
		        logSuccess(localize.getLocalizedString('_RetrievedHolidays_'), services, true);
		        return services;
		    }
		}

以下是检索服务的API调用：

 [HttpGet]
        public IQueryable Services(int clientId, int currentLocation)
        {
            locationsRepo = new ClientLocationsRepository(this.CurrentUser, this.SystemContextProvider, clientId);
            serviceRepo = new ClientServiceRepository(this.CurrentUser, this.SystemContextProvider, clientId);

            int currentLocationType = locationsRepo.GetLocationType(currentLocation).LocationTypeId;
            List<Location> accessibleLocationList = GetLocationsAccessible(clientId, currentLocation).ToList();
            IQueryable productsAndServices = serviceRepo.GetProductsAndServices(accessibleLocationList, currentLocationType);
            return productsAndServices;
        }

Answer 1

因为您在本地查询缓存所使用的方法是给出错误“undefined is is a function”。在本地查询缓存时使用此方法

manager.executeQuery(query).then(function(data) {
    var query2 = query.where(predicate)
                .using(breeze.FetchStrategy.FromLocalCache);
    manager.executeQuery(query2).then(function(dataSubset) {
      // use your datasubset to populate your results....  
    });