2

我正在尝试通过 C# 驱动程序对子集合进行建模，但我发现这样做很困难；你能帮我做这件事吗，或者一些完整的例子吗？

我正在努力实现这一目标；

{
id:"id", name: 'name', Tokens:[{name:"yes",expiry:'Today'}, {name:"Hello", expiry:"tomorow"}]
}

我已经为这样的课程建模

Class sample
{
    [BSON]
    public string id{get; set;}
    public string name{get; set;}
    public TokensCollection[] tokens(get; set;} 
} 

public class TokensCollection
{
    public string name{get;set;}
    public string expiry{get;set;}
}

在存储库中，我试图像这样初始化它，

Sample sample1 = new Sample{
id = ObjectId.GenerateNewId().ToString();
name = "name";
//Best way to model this? any pointers?
for (int index =1; index <=2; index++)
{
    tokens[index].name = "me";
    tokens[index].expiry = "Today"
}

collection.insert(sample1);

有人可以帮我解决这个问题吗？

4

2 回答 2

1

我最初在MongoDb CSharp Google Group上回答了您的问题，这里是任何有类似问题的人的示例；

using System;
using System.Collections.Generic;
using System.Linq;

using MongoDB.Bson;
using MongoDB.Bson.Serialization.Attributes;

using MongoDB.Driver;
using MongoDB.Driver.Linq;

namespace Test.ConsoleApp
{

public class Sample
{

    [BsonId]
    public ObjectId Id { get; private set; }
    public string Name { get; set; }
    public List<Token> Tokens { get; set; }

    public Sample()
    {
        Id = ObjectId.GenerateNewId();
        Tokens = new List<Token>();
    }

}

public class Token
{
    public string Name { get; set; }
    public string Expiry { get; set; }
}


public class Program
{
    static void Main(string[] args)
    {
        var server = MongoServer.Create("mongodb://localhost/database?safe=true");
        var database = server.GetDatabase("test");
        var samplesCollection = database.GetCollection<Sample>("samples");

        Console.WriteLine("Creating Sample #1 ... ");

        var sample1 = new Sample();
        sample1.Name = "Sample #1";
        sample1.Tokens.Add(new Token() { Name = "Name #1", Expiry = "Today" });

        Console.WriteLine("Creating Sample #2 ... ");

        var sample2 = new Sample();
        sample2.Name = "Sample #2";
        sample2.Tokens.Add(new Token() { Name = "Name #2", Expiry = "Tomorrow" });
        sample2.Tokens.Add(new Token() { Name = "Name #3", Expiry = "Next Tuesday" });

        Console.WriteLine("Saving Sample #1 and #2 ... ");

        samplesCollection.Save(sample1);
        samplesCollection.Save(sample2);

        Console.WriteLine("Fetching Sample #1 and #2 ... ");

        var sampleOneFromDb = samplesCollection.AsQueryable<Sample>().Where(c => c.Name.Contains("Sample #1"));

        Console.WriteLine("Sample #1 From DB - {0}", sampleOneFromDb.ToJson());
        Console.ReadLine();

    }
  }
}
于 2012-10-18T08:33:18.397 回答
0

好吧，我设法找到了答案。我使用 IList 而不是使用 Array 并像这样初始化对象，

在示例类中有几个变化

   Class Sample
    {
.....

public List<TokensCollection> tokens{get; set;}
}

并使用

Sample sample1 = new Sample()
{

.....

tokens = new List<TokensCollection>{
new TokensCollection(){name='name1', expiry ='expiry1'},
new TokensCollection(){name='name2', expiry ='expiry2'}
}

}

它应该像魅力一样插入您的 Embedded Collection 文档。如果您想添加更多文档，您应该使用

tokes.add(new TokensCollection(){name='name3', expiry='expiry3})

祝一切顺利

于 2012-10-13T13:20:38.480 回答