MongoDb and self-regulatory objects

Question

I am just starting to learn about mongo db and was wondering if I am not doing something wrong .... I have two objects:

public class Part 
{
    public Guid Id;
    public ILIst<Materials> Materials;
}

public class Material
{
   public Guid MaterialId;
   public Material ParentMaterial;
   public IList<Material> ChildMaterials;
   public string Name;
}

When I try to save this particular graph of objects, I get an error due to circular reference. My question is, is there any way around this? In WCF, I can add the IsReference attribute on the datacontract to true, and it serializes just fine.

Answer 1

I was able to accomplish exactly what I needed using the modified driver from NoRM mongodb .

Answer 2

Which driver are you using?

In NoRM, you can create a DbReference like this:

public DbReference<Material> ParentMaterial;

Mongodb-csharp DbReferences, .

public DBRef ParentMaterial;

Database.FollowReference(ParentMaterial).

Answer 3

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Answer 4

If you want to store object diagrams with relationships between them requiring multiple “joins” to get the answer, you are probably better off working with a SQL-style database. The document-oriented approach of MongoDB and others is likely to structure this differently.

Take a look at MongoDB nested sets , which offer some ways to represent such data.