Created initial mongodb integration doc

docs/Entity-Framework-Core.md

@@ -1,10 +1,10 @@
 ## Entity Framework Core Integration
 
-This document explains how to integrate EF Core as ORM provider to ABP based applications and how to configure it in details.
+This document explains how to integrate EF Core as an ORM provider to ABP based applications and how to configure it.
 
 ### Installation
 
-`Volo.Abp.EntityFrameworkCore` is the main nuget package for EF Core integration. Install it to your project (for a layered application, to your data/infrastructure layer):
+`Volo.Abp.EntityFrameworkCore` is the main nuget package for the EF Core integration. Install it to your project (for a layered application, to your data/infrastructure layer):
 
 ````
 Install-Package Volo.Abp.EntityFrameworkCore
@@ -92,18 +92,12 @@ services.AddAbpDbContext<MyDbContext>(options =>
 });
 ````
 
-Then you can inject and use `IRepository<TEntity>` or `IQueryableRepository<TEntity>` in your services (see repository documentation - TODO).
-
-TODO: Example
+Then you can inject and use `IRepository<TEntity>` or `IQueryableRepository<TEntity>` in your services.
 
 #### Add Custom Repositories
 
 TODO...
 
-### Best Practices
-
-See [best practices](Best-Practices/) for EF Core integration.
-
 #### Set Base DbContext Class or Interface for Default Repositories
 
 ...

docs/Index.md

@@ -29,4 +29,4 @@
     * Unit Of Work
 * Data Access
   * [Entity Framework Core Integration](Entity-Framework-Core.md)
-  * MongoDB Integration
+  * [MongoDB Integration](MongoDB.md)

docs/MongoDB.md

@@ -0,0 +1,99 @@
+## MongoDB Integration
+
+This document explains how to integrate MongoDB as a database provider to ABP based applications and how to configure it.
+
+### Installation
+
+`Volo.Abp.MongoDB` is the main nuget package for the MongoDB integration. Install it to your project (for a layered application, to your data/infrastructure layer):
+
+```
+Install-Package Volo.Abp.MongoDB
+```
+
+Then add `AbpMongoDbModule` module dependency to your [module](Module-Development-Basics.md):
+
+```c#
+using Volo.Abp.MongoDB;
+using Volo.Abp.Modularity;
+
+namespace MyCompany.MyProject
+{
+    [DependsOn(typeof(AbpMongoDbModule))]
+    public class MyModule : AbpModule
+    {
+        //...
+    }
+}
+```
+
+### Creating a Mongo Db Context
+
+ABP introduces **Mongo Db Context** concept (which is similar to Entity Framework Core's DbContext) to make it easier to use collections and configure them. An example is shown below:
+
+```c#
+public class MyDbContext : AbpMongoDbContext
+{
+    public IMongoCollection<Question> Questions => Collection<Question>();
+
+    public IMongoCollection<Category> Categories => Collection<Category>();
+
+    protected override void CreateModel(IMongoModelBuilder modelBuilder)
+    {
+        modelBuilder.Entity<Question>(b =>
+        {
+            b.CollectionName = "Questions";
+        });
+    }
+}
+```
+
+* It's derived from `AbpMongoDbContext` class.
+* Adds a public `IMongoCollection<TEntity>` property for each mongo collection. ABP uses these properties to create default repositories by default.
+* Overriding `CreateModel` method allows to configure collections (like their collection name in the database).
+
+### Registering DbContext To Dependency Injection
+
+Use `AddAbpDbContext` method in your module to register your DbContext class for [dependency injection](Dependency-Injection.md) system.
+
+```c#
+using Microsoft.Extensions.DependencyInjection;
+using Volo.Abp.MongoDB;
+using Volo.Abp.Modularity;
+
+namespace MyCompany.MyProject
+{
+    [DependsOn(typeof(AbpMongoDbModule))]
+    public class MyModule : AbpModule
+    {
+        public override void ConfigureServices(IServiceCollection services)
+        {
+            services.AddMongoDbContext<MyDbContext>();
+
+            //...
+        }
+    }
+}
+```
+
+#### Add Default Repositories
+
+ABP can automatically create [repositories](Repositories.md) for the entities in your Db Context. Just use `AddDefaultRepositories()` option on registration:
+
+````C#
+services.AddMongoDbContext<MyDbContext>(options =>
+{
+    options.AddDefaultRepositories();
+});
+````
+
+This will create a repository for each aggreate root entity (classes derived from AggregateRoot) by default. If you want to create repositories for other entities too, then set `includeAllEntities` to `true`:
+
+```c#
+services.AddMongoDbContext<MyDbContext>(options =>
+{
+    options.AddDefaultRepositories(includeAllEntities: true);
+});
+```
+
+Then you can inject and use `IRepository<TEntity>` or `IQueryableRepository<TEntity>` in your services.
+