2012-01-25 71 views
1

我已經看過類似的問題,但還沒有找到解決方案。我已經使用通過WCF導航屬性不填充實體框架

  1. .Include("")
  2. .Load()

,但我的導航性能仍空當我通過WCF服務檢索它們嘗試。

這裏是我的實體:

public class Person 
{ 
    public int PersonID { get; set; } 
    public string Name { get; set; } 
    public virtual ICollection<Address> Addresses { get; set; } 

    public Person() 
    { 
     this.Addresses = new List<Address>(); 
    } 
} 

public class Address 
{ 
    public int AddressID { get; set; } 
    public string AddressLine1 { get; set; } 
    public virtual ICollection<Person> Residents { get; set; } 

    public Address() 
    { 
     this.Residents = new List<Person>(); 
    } 
} 

使用流利的API,我是分別地址/居民的兩個實體的hasMany聲明。我的WCF服務的代碼如下所示:

[ServiceBehavior(IncludeExceptionDetailInFaults = true)] 
public class Repository : DataService<EFEntitiesDataContext> 
{ 
    // This method is called only once to initialize service-wide policies. 
    public static void InitializeService(DataServiceConfiguration config) 
    { 
     config.UseVerboseErrors = true; 

     config.SetEntitySetAccessRule("*", EntitySetRights.All); 
     config.SetServiceOperationAccessRule("*", ServiceOperationRights.All); 

     config.DataServiceBehavior.MaxProtocolVersion = DataServiceProtocolVersion.V2; 
    } 

    protected override EFEntitiesDataContext CreateDataSource() 
    { 
     EFEntitiesDataContext dataSource = new EFEntitiesDataContext(); 
     dataSource.Configuration.ProxyCreationEnabled = false; 
     dataSource.Configuration.LazyLoadingEnabled = true; 
     return dataSource; 
    } 

    [WebGet] 
    public IList<Person> GetAllPeople() 
    { 
     EFEntitiesDataContext context = this.CreateDataSource(); 
     return context.People.Include("Addresses").Where(n => n.Addresses.Any()).ToList(); 
    } 
} 

最後,我調用我的服務是這樣的:

static void Main(string[] args) 
{ 
    Uri uri = new Uri("http://localhost:49479/Repository.svc"); 

    RepositoryService.EFEntitiesDataContext repositoryService = new RepositoryService.EFEntitiesDataContext(uri); 

    Uri uriRequest = new Uri(string.Concat(repositoryService.BaseUri, "/GetAllPeople")); 
    foreach (var person in repositoryService.Execute<RepositoryService.Person>(uriRequest)) 
    { 
     System.Console.WriteLine("Name: " + person.Name + ", Addresses: " + person.Addresses.Count.ToString()); 
    } 

    System.Console.ReadKey(); 
} 

任何想法嗎?

+0

服務器端(在'GetAllPeople()')中還是僅在客戶端(在'Main'中)地址已經丟失?順便說一句:我認爲設置'ProxyCreationEnabled = false'和'LazyLoadingEnabled = true'沒有意義,因爲延遲加載不能沒有代理工作。但是它可能與你的問題沒有任何關係,因爲你正在使用'Include'進行加載。 – Slauma

回答

1

默認情況下,導航屬性未擴展。而且服務器上無法強制它們擴展。客戶可以通過請求/ People?$ expand =地址來輕鬆完成。