usage.md

title	_description
Usage of KEFCore	Describes how to use Entity Framework Core provider for Apache Kafka™

KEFCore usage

Read Getting started to find out info and tips.

Basic example

The following code demonstrates basic usage of Entity Framework Core provider for Apache Kafka™.. For a full tutorial configuring the KafkaDbContext, defining the model, and creating the database, see KafkaDbContext in the docs.

using (var context = new BloggingContext()
{
    BootstrapServers = serverToUse,
    ApplicationId = "TestApplication",
    DbName = "TestDB",
})
{
    // Inserting data into the database
    db.Add(new Blog { Url = "http://blogs.msdn.com/adonet" });
    db.SaveChanges();

    // Querying
    var blog = db.Blogs
        .OrderBy(b => b.BlogId)
        .First();

    // Updating
    blog.Url = "https://devblogs.microsoft.com/dotnet";
    blog.Posts.Add(
        new Post
        {
            Title = "Hello World",
            Content = "I wrote an app using EF Core!"
        });
    db.SaveChanges();

    // Deleting
    db.Remove(blog);
    db.SaveChanges();
}

public class BloggingContext : KafkaDbContext
{
    public DbSet<Blog> Blogs { get; set; }
    public DbSet<Post> Posts { get; set; }
}

public class Blog
{
    public int BlogId { get; set; }
    public string Url { get; set; }
    public long Rating { get; set; }
    public List<Post> Posts { get; set; }
}

public class Post
{
    public int PostId { get; set; }
    public string Title { get; set; }
    public string Content { get; set; }

    public int BlogId { get; set; }
    public Blog Blog { get; set; }
}

Possible usages

For possible usages of Entity Framework Core provider for Apache Kafka™, and this feature, see use cases