Expression is currently not supported.

[mxmissile]

I'm currently testing RepoDb to see if its a good fit for my project. However on my first test I am getting a System.NotSupportedException: Expression 'x => x.Vw' is currently not supported.:

model:

    [Table("items")]
    public class Line
    {
        [Column("item_id")]
        [Key]
        [Identity]
        public int Id { get; set; }

        public bool Vw { get; set; }

        [Column("itemnum")]
        public int Number { get; set; }
    }

simple test:

      var items = cn.Query<Line>(x => x.Vw);

      foreach (var item in items)
      {
          Console.WriteLine(item.Id);
      }

I'm probably missing something obvious!?

[mikependon]

For now, it requires the left and right in the expression tree. Below shoud work.

var items = cn.Query<Line>(x => x.Vw == true);

[mxmissile]

I'm confused, doesn't that evaluate the same (to true)?

[mikependon]

It is, but UnaryExpression support of the library is not extensive as EF. There are other things that are not supported as well, like even a simple field comparisson like (e => e.Field1 != e.Field2).

[mikependon]

We also issued some caveats on our Expression Trees documentation.

Therefore, whatever expression tree that is not supported would automatically be defaulted to the exception thrown on this post.

[mxmissile]

I understand, have you considered ReLinq to handle your expressions? https://github.com/re-motion/Relinq