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mbdavid / LiteDB

LiteDB - A .NET NoSQL Document Store in a single data file
http://www.litedb.org
MIT License
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Coming from Siaqodb to LiteDB - DbRef question #1284

Open stephenhauck opened 5 years ago

stephenhauck commented 5 years ago

I am a little confused about exactly when BSON attributes are required and such.

I am looking at https://github.com/mbdavid/LiteDB/wiki/DbRef

It indicates that if I want "customers" in a separate file I must include the annotation [BsonRef("customers")] // where "customers" are Customer collection name public Customer Customer { get; set; }

Is there a way to configure this to be the case for all complex types by default ?

Also, is there a way to configure a type (the Order type below) or all queries to automatically retrieve the related data (using include or an attribute in the top level model) so I don't have to use the "include" like in the code below? // repository fluent syntax db.Query<Order>() .Include(x => x.Customer) .Include(x => x.Products) .ToList();

mbdavid commented 5 years ago

Hi @stephenhauck, LiteDB implements same conecpt of DbRef as MongoDB. DbRef are just a new object with 2 parameters: { $ref:"collection-name-referece", $id: cross-object-id }

If you want that all sub documents must be a reference, maybe you should review conecpts about DocumentStore database. DbRef should be avoid as much as possible.

I always recommend this "Data Modeling" section on MongoDB documentation because all concepts here are used in LiteDB

https://docs.mongodb.com/manual/core/data-modeling-introduction/

stephenhauck commented 5 years ago

I have seen that before. I simply wanted to know if there were global settings / an option to make it behave the way I would like it to in this specific conversion by default without the extra annotations.