不支持Azure Cosmos DB查询

Question

我已经检查了我正在使用所有最新的NuGet库版本。有人能给我提示一下还有什么要查吗？这是代码：

public static class Example
{
    [FunctionName("example")]
    public static async Task<IActionResult> Run(
        [HttpTrigger(AuthorizationLevel.Function, "post", Route = "example")] HttpRequest req,
        [CosmosDB(
            databaseName: "a",
            collectionName: "b",
            ConnectionStringSetting = "CosmosDBConnection")]
            DocumentClient client,
            ILogger log)
        {
            log.LogInformation($"GetRockLocationsSpatial for coordinates");
            Uri collectionUri = UriFactory.CreateDocumentCollectionUri("a", "b");
            Polygon rectangularArea = new Polygon(
                new[]
                {
                    new LinearRing(new [] {
                        new Position(100, 50),
                        new Position(130, 50),
                        new Position(130, 40),
                        new Position(100, 40),
                        new Position(100, 50)
                    })
                });
            var rocks =client.CreateDocumentQuery<RockLocationDocument>(collectionUri).Where(a => a.location.Within(rectangularArea)).AsEnumerable();

            foreach (RockLocationDocument rock in rocks)
            {
                Console.WriteLine("\t" + rock);
            }

            return new OkObjectResult(JsonConvert.SerializeObject(rocks));
        }
    }
}

Answer 1

我不知道是什么导致了你的错误。但我可以用你的代码得到结果。你可以跟着这个试一试。

RockLocationDocument.cs

using Microsoft.Azure.Documents.Spatial;

namespace example
{
    public class RockLocationDocument
    {

        public string id { get; set; }

        public Point location { get; set; }
    }
}

Founction.cs

using System;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using Microsoft.Azure.Documents.Client;
using Microsoft.Azure.Documents.Spatial;
using System.Linq;

namespace example
{
    public static class Example
{
    [FunctionName("example")]
    public static async Task<IActionResult> Run(
        [HttpTrigger(AuthorizationLevel.Function, "post", Route = "example")] HttpRequest req,
        [CosmosDB(
            databaseName: "Test",
            collectionName: "site",
            ConnectionStringSetting = "sogo_DOCUMENTDB")]
            DocumentClient client,
            ILogger log)
        {
            log.LogInformation($"GetRockLocationsSpatial for coordinates");
            Uri collectionUri = UriFactory.CreateDocumentCollectionUri("Test", "site");
            Polygon rectangularArea = new Polygon(
                new[]
                {
                    new LinearRing(new [] {
                        new Position(100, 50),
                        new Position(130, 50),
                        new Position(130, 40),
                        new Position(100, 40),
                        new Position(100, 50)
                    })
                });

            var rocks =client.CreateDocumentQuery<RockLocationDocument>(collectionUri,new FeedOptions { EnableCrossPartitionQuery = true }).Where(a => a.location.Within(rectangularArea)).AsEnumerable();

            foreach (RockLocationDocument rock in rocks)
            {
                Console.WriteLine("\t" + JsonConvert.SerializeObject(rock));
            }

            return new OkObjectResult(JsonConvert.SerializeObject(rocks));
        }
    }
}