为什么我的 WCF 数据服务方法没有出现在 OData 集合列表中?
当我在浏览器中查看 WCF 数据服务服务 (http://localhost/MyService.svc/) 的根目录时,我会看到以下内容:
<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
<service xml:base="http://localhost/MyService.svc/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:app="http://www.w3.org/2007/app" xmlns="http://www.w3.org/2007/app">
<workspace>
<atom:title>Default</atom:title>
</workspace>
</service>
我希望看到集合列表。
当我转到 $metadata
URL 时,我看到以下内容:
<?xml version="1.0" encoding="iso-8859-1" standalone="yes"?>
<edmx:Edmx Version="1.0" xmlns:edmx="http://schemas.microsoft.com/ado/2007/06/edmx">
<edmx:DataServices xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" m:DataServiceVersion="1.0">
<Schema Namespace="MyApp" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://schemas.microsoft.com/ado/2007/05/edm">
<ComplexType Name="Package">
<Property Name="Id" Type="Edm.String" Nullable="true" />
</ComplexType>
</Schema>
<Schema Namespace="MyApp" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://schemas.microsoft.com/ado/2007/05/edm">
<EntityContainer Name="PackageService" m:IsDefaultEntityContainer="true">
<FunctionImport Name="GetQueryablePackages" ReturnType="Collection(MyApp.Package)" m:HttpMethod="GET" />
</EntityContainer>
</Schema>
</edmx:DataServices>
</edmx:Edmx>
为什么我的 GetQueryablePackages
集合不会出现?
我正在使用这些访问设置:
config.SetEntitySetAccessRule("*", EntitySetRights.AllRead);
config.SetServiceOperationAccessRule("*", ServiceOperationRights.All);
When I view the root of my WCF Data Services service (http://localhost/MyService.svc/) in a browser I see this:
<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
<service xml:base="http://localhost/MyService.svc/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:app="http://www.w3.org/2007/app" xmlns="http://www.w3.org/2007/app">
<workspace>
<atom:title>Default</atom:title>
</workspace>
</service>
I would expect to see a list of collections.
When I go to the $metadata
URL I see this:
<?xml version="1.0" encoding="iso-8859-1" standalone="yes"?>
<edmx:Edmx Version="1.0" xmlns:edmx="http://schemas.microsoft.com/ado/2007/06/edmx">
<edmx:DataServices xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" m:DataServiceVersion="1.0">
<Schema Namespace="MyApp" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://schemas.microsoft.com/ado/2007/05/edm">
<ComplexType Name="Package">
<Property Name="Id" Type="Edm.String" Nullable="true" />
</ComplexType>
</Schema>
<Schema Namespace="MyApp" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://schemas.microsoft.com/ado/2007/05/edm">
<EntityContainer Name="PackageService" m:IsDefaultEntityContainer="true">
<FunctionImport Name="GetQueryablePackages" ReturnType="Collection(MyApp.Package)" m:HttpMethod="GET" />
</EntityContainer>
</Schema>
</edmx:DataServices>
</edmx:Edmx>
Why might my GetQueryablePackages
collection not be appearing?
I'm using these access settings:
config.SetEntitySetAccessRule("*", EntitySetRights.AllRead);
config.SetServiceOperationAccessRule("*", ServiceOperationRights.All);
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服务操作(EDM中的函数导入)不暴露在服务文档中。那里只公开实体集。
如果您希望在服务文档中公开您的数据,请从中创建一个实体集。根据提供商模型的不同,这会有所不同。通常,这意味着在上下文类上公开 IQueryable 类型的属性。请注意,T 必须是实体类型(必须有键)。
Service operations (the function import in the EDM) is not exposed in the service document. Only entity sets are exposed there.
If you want your data to be exposed in the service document make an entity set out of it. Depending on the provider model this differs. Typically it means exposing a property of type IQueryable on your context class. Note that T has to be an entity type (must have a key).
您能否分享您定义了 IQueryable <> 的上下文定义?特性。我想到了两件事:首先,属性必须是 IQueryable<> 类型;或从它派生的某种类型。其次,IQueryable<>引用的元素类型。必须是实体类型,即它们必须具有在其中声明的关键属性。
希望这有帮助。
谢谢
普拉蒂克
Can you share the context definition where you have defined the IQueryable <> properties. There are 2 things that come to my mind: First the properties must be of type IQueryable<> or some type that derives from it. Second, the element type refered by the IQueryable<> must be an entity type i.e. they must have key properties declared in them.
Hope this helps.
Thanks
Pratik
或者您可以创建一个像这样的扩展方法:
Or you can create an extension method like this: