MongoRepository

MongoRepository copied to clipboard

MongoRepository

Repository pattern for MongoDB with extended features

Definition

Model

You don't need to create a model, but if you are doing so you need to extend Entity

// If you are able to define your model
public class User : Entity 
{
    public string Username { get; set; }
    public string Password { get; set; }
}

Repository

There are multiple base constructors, read summaries of others

public class UserRepository : Repository<User> 
{
    public UserRepository(string connectionString) : base(connectionString) { }

    // Custom method
    public User FindByUsername(string username) 
    {
        return First(i => i.Username == username);
    }

    // Custom method2
    public void UpdatePassword(User item, string newPassword) 
    {
        repo.Update(item, i => i.Password, newPassword);
    }

    // Custom async method
    public async Task<User> FindByUsernameAsync(string username) 
    {
        return awaitFirstAsync(i => i.Username == username);
    }
}

If you want to create a repository for already defined non-entity model

public class UserRepository : Repository<Entity<User>> 
{
    public UserRepository(string connectionString) : base(connectionString) { }


    // Custom method
    public User FindByUsername(string username) 
    {
        return First(i => i.Content.Username == username);
    }
}

Usage

Each method has multiple overloads, read method summary for additional parameters

UserRepository repo = new UserRepository("mongodb://localhost/sample")

// Get
User user = repo.Get("58a18d16bc1e253bb80a67c9");

// Insert
User item = new User() 
{
    Username = "username",
    Password = "password"
};
repo.Insert(item);

// Update
// Single property
repo.Update(item, i => i.Username, "newUsername");

// Multiple property
// Updater has many methods like Inc, Push, CurrentDate, etc.
var update1 = Updater.Set(i => i.Username, "oldUsername");
var update2 = Updater.Set(i => i.Password, "newPassword");
repo.Update(item, update1, update2);

// All entity
item.Username = "someUsername";
repo.Replace(item);

// Delete
repo.Delete(item);

// Queries - all queries has filter, order and paging features
var first = repo.First();
var last = repo.Last();
var search = repo.Find(i => i.Username == "username");
var allItems = repo.FindAll();

// Utils
var any = repo.Any(i => i.Username.Contains("user"));

// Count
// Get number of filtered documents
var count = repo.Count(p => p.Age > 20);

// EstimatedCount
// Get number of all documents
var count = repo.EstimatedCount();