当 PartitionKeyValue 和 id 两个值相同时使用 DeleteItemAsync 删除项目

Question

我正在尝试从 CosmosDB collection 中删除一个项目。我打电话使用

ItemResponse<Device> response = await _deviceCapabilityContainerName.DeleteItemAsync<Device>(device.deviceId, new PartitionKey(device.deviceId));

我看到过完全相同的帖子，唯一不同的是，在我的例子中，PartitionKey 和 id 的值都相同。我不断收到 404 Resource Not found 错误。在这种情况下如何删除记录。我不想删除 collection 和 re-create。

Answer 1

最新

数据格式。

{
"id": "002",
"deviceid": "002",
"_rid": "Jx1nAMAZtRYEAAAAAAAAAA==",
"_self": "dbs/Jx1nAA==/colls/Jx1nAMAZtRY=/docs/Jx1nAMAZtRYEAAAAAAAAAA==/",
"_etag": "\"00000000-0000-0000-5a4b-b12502fe01d6\"",
"_attachments": "attachments/",
"_ts": 1594778419
}

代码.

using System;
using System.Threading.Tasks;
using System.Configuration;
using System.Collections.Generic;
using System.Net;
using Microsoft.Azure.Cosmos;
using System.Linq;

namespace CosmosDB
{
    class Program
    {
        // <Main>
        public static async Task Main(string[] args)
        {
            try
            {
                Console.WriteLine("Beginning operations...\n");
                CosmosClient client = new CosmosClient("https://localhost:8081/", "C2y6yDjf5/R+ob0N8A7Cgv30VRDJIWEHLM+4QDU5DE2nQ9nDuVTqobD4b8mGGyPMbIZnqyMsEcaGQy67XIw/Jw==");
                Database database = await client.CreateDatabaseIfNotExistsAsync("Items");
                Container container = database.GetContainer("test");
                // Query for an item
                FeedIterator<response> feedIterator = container.GetItemQueryIterator<response>("SELECT * FROM c");

                List<Task> concurrentDeleteTasks = new List<Task>();

                while (feedIterator.HasMoreResults)
                {
                    FeedResponse<response> res = await feedIterator.ReadNextAsync();
                    foreach (var item in res)
                    {                            concurrentDeleteTasks.Add(container.DeleteItemAsync<response>(item.id, new PartitionKey(item.deviceid)));
                    }
                }
                await Task.WhenAll(concurrentDeleteTasks.Take(3));
            }
            catch (CosmosException de)
            {
                Exception baseException = de.GetBaseException();
                Console.WriteLine("{0} error occurred: {1}", de.StatusCode, de);
            }
            catch (Exception e)
            {
                Console.WriteLine("Error: {0}", e);
            }    
            finally
            {
                Console.WriteLine("End of demo, press any key to exit.");
                Console.ReadKey();
            }
        }
        public class response
        {
            public string id { get; set; }
            public string deviceid { get; set; }
            public string _rid { get; set; }
            public string _self { get; set; }
            public string _etag { get; set; }
            public string _attachments { get; set; }
            public long _ts { get; set; }
            }
        }
    }

原始

您的错误是分区键不是名称而是分区键的值。

container.DeleteItemAsync<response>(item.id, new PartitionKey(item.adress)

更多详情，您可以。

当 PartitionKeyValue 和 id 两个值相同时使用 DeleteItemAsync 删除项目

Delete an item using DeleteItemAsync when PartitionKeyValue and id both values are same

azure-cosmosdb

azure-cosmosdb-mongoapi