Question

我正在尝试通过C＃驱动程序对子集进行建模，但我发现很难这样做;你能不能帮助我做一些事情，或者为同样的事做一些完整的例子？

我正在努力实现这个目标;

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

我已经建模了这样的课程

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，我正在尝试像这样初始化

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);

有人可以帮我吗？

Answer 1

好吧，我找到了答案。我使用IList而不是使用Array并且像这样初始化对象

示例类

中有几处更改

   Class Sample
    {
.....

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

并使用

初始化相同内容

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嵌入式收藏文档。如果您想添加更多文档，请使用

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

一切顺利

Answer 2

我最初在MongoDb CSharp Google Group上回答了您的问题，以下是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();

    }
  }
}

在c＃中建模mongodb子集合

2 个答案: