无法映射自定义 Odata 函数

Question

我正在尝试在 Odata 网络服务上执行自定义函数（在本例中为 Proof()）。我试图弄清楚我需要使用什么 URL 才能从客户端执行此控制器 Proof() 方法。这显然是错误映射，因为我没有看到在调试模式下运行和进行客户端调用时执行的方法 (_http://localhost:53610/Receipt/AccountsReceivableWebService.Proof())。

我应该使用什么 URL 从客户端执行此方法？更好的是，我怎样才能从 WebApiConfig 正确映射这条路径？欢迎批评指正！提前致谢。

webservice控制器如下：

using System.Collections.Generic;
using System.Data.Entity;
using System.Data.Entity.Infrastructure;
using System.Linq;
using System.Net;
using System.Threading.Tasks;
using System.Web.Http;
using System.Web.OData;
using System.Web.OData.Routing;
using AccountsReceivableWebService.Models;


namespace AccountsReceivableWebService.Controllers
{
  public class ReceiptController : ODataController
{
ReceiptContext db = new ReceiptContext() { Receipt = new Receipt() { ReceiptLines = new List<ReceiptLine>() } };

private bool ReceiptExitsts(string key)
{
  return true;
}

public IHttpActionResult Get()
{


  return Ok(db.Receipt);
}

public IHttpActionResult Post(Receipt receipt)
{
  if (!ModelState.IsValid) return BadRequest(ModelState);
  if (!receipt.Insert()) BadRequest("Poorly formed receipt.");
  db.Receipt = receipt;
  return Created(db.Receipt);
}

/// <summary>
/// Checks that this receipt is a valid receipt
/// </summary>
/// <returns></returns>

[HttpGet]
public IHttpActionResult Proof()
{
  return Ok();
}


  }
}

WebApiConfig.cs 是我试图映射我想要执行的函数的地方。代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.Http;
using AccountsReceivableWebService.Models;
using System.Web.OData.Builder;
using System.Web.OData.Extensions;


namespace AccountsReceivableWebService
{
 public static class WebApiConfig
 {
  public static void Register(HttpConfiguration config)
  {
  // Web API configuration and services

  // Web API routes
  ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
  builder.EntitySet<Receipt>("Receipts");

  builder.Namespace = "AccountsReceivableWebService";
  builder.EntityType<Receipt>().Collection.Function("Proof").Returns<string>();


  config.MapODataServiceRoute(
    routeName: "ODataRoute",
    routePrefix: null,
    model: builder.GetEdmModel());


  }
 }
}

编辑：我收到的错误是 404.0 - 未找到，这让我相信这是一个映射问题。

元数据：

<edmx:Edmx xmlns:edmx="http://docs.oasis-open.org/odata/ns/edmx" Version="4.0">
  <edmx:DataServices>
    <Schema xmlns="http://docs.oasis-open.org/odata/ns/edm" Namespace="AccountsReceivableWebService.Models">
      <EntityType Name="Receipt">
        <Key>
          <PropertyRef Name="ReceiptId"/>
        </Key>
        <Property Name="ReceiptId" Type="Edm.String" Nullable="false"/>
        <Property Name="comments" Type="Edm.String"/>
        <Property Name="remitter" Type="Edm.String"/>
        <Property Name="ReceiptLineId" Type="Edm.String"/>
        <NavigationProperty Name="ReceiptLines" Type="Collection(AccountsReceivableWebService.Models.ReceiptLine)"/>
      </EntityType>
      <EntityType Name="ReceiptLine">
        <Key>
          <PropertyRef Name="ReceiptLineId"/>
        </Key>
        <Property Name="ReceiptLineId" Type="Edm.String" Nullable="false"/>
        <Property Name="Comments" Type="Edm.String"/>
        <Property Name="FiscalYear" Type="Edm.String"/>
        <Property Name="CostCenter" Type="Edm.String"/>
        <Property Name="object" Type="Edm.String"/>
        <Property Name="Amount" Type="Edm.String"/>
        <Property Name="Function" Type="Edm.String"/>
      </EntityType>
    </Schema>
    <Schema xmlns="http://docs.oasis-open.org/odata/ns/edm" Namespace="AccountsReceivableWebService">
      <Function Name="Proof" IsBound="true">
        <Parameter Name="bindingParameter" Type="Collection(AccountsReceivableWebService.Models.Receipt)"/>
        <ReturnType Type="Edm.String" Unicode="false"/>
      </Function>
      <EntityContainer Name="Container">
        <EntitySet Name="Receipts" EntityType="AccountsReceivableWebService.Models.Receipt"/>
      </EntityContainer>
    </Schema>
  </edmx:DataServices>
</edmx:Edmx>

Answer 1

这就是我在我的一个项目中使用有界集合函数的方式

在WebApi.config

var function = customerBuilder.EntityType<MyType>().Collection.Function("MyFunction");
function.Returns<MyReturnType>();
function.Parameter<string>("myStringParameterName");

在我的 MyTypeController 中：ODataController

[HttpGet]
public IHttpActionResult MyFunction(string myStringParameterName)
{
    //DBContextStuff
    return Ok(new MyReturnType())
}

我在MVC控制器中消费数据

var myData = MyODataClient.MyType.MyFunction(myStringParameterName).GetValue();

希望对您有所帮助。

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