SQLite.Framework 2.0.0

SQLite.Framework

A lightweight, experimental ORM for SQLite, designed for .NET MAUI with AOT support and LINQ-style IQueryable querying.

Features

• AOT-ready: Designed for Ahead-Of-Time compilation in .NET MAUI apps.
• IQueryable interface: Write LINQ queries against your SQLite database.
• Inspired by EF & sqlite-net-pcl: Familiar patterns with minimal overhead.

Installation

Install via NuGet:

dotnet add package SQLite.Framework

Quick Start

1. Define your model:

   public class Person
   {
       [Key, AutoIncrement]
       public int Id { get; set; }
       public required string Name { get; set; }
       public DateTime? BirthDate { get; set; }
   }
   

2. Initialize the context:

   using SQLite.Framework;
   
   var context = new SQLiteDatabase("app.db");
   context.Table<Person>().CreateTable();
   

   On the table class, you can use the following:

   • The [Table] attribute to specify the table name.
   • The [WithoutRowId] attribute to use the without rowid optimization.

   On the class properties:

   • The [Column] attribute specifies the column name.
   • The [NotMapped] attribute ignores the property.
   • The [Key] attribute specifies the primary key.
   • The [Index] attribute creates an index on the column or make a column unique.
   • The [AutoIncrement] attribute is used to specify that the column should be auto-incremented.
   • The [Required] attribute is used to specify that the column is NOT NULL (columns are NOT NULL by default, but using the ? operator marks them as nullable).

3. Query with LINQ:

   // Insert
   context.Add(new Person { Name = "Alice" });
   
   // Query
   var results = context.Table<Person>()
        .Where(p => p.Name.StartsWith("A"))
        .OrderBy(p => p.Id)
        .Select(p => new { p.Id + 1, p.Name })
        .ToList();
   

4. Async query with LINQ:

   // Insert
   await context.AddAsync(new Person { Name = "Alice" });
   
   // Query
   var results = await context.Table<Person>()
        .Select(p => p.Id)
        .ToListAsync();
   

AOT Support

In order to use this library in AOT scenarios, you need to make sure the objects you are querying are either:

• Part of the assembly that is being AOT compiled (in other words it needs to be part of the code you see).
• Or simply make sure the classes are referenced in your code.

Contributing

This project is in early development. Feel free to:

• Report bugs or missing features.
• Submit PRs to add functionality or tests.

License

MIT © Nikolay Kostadinov