Qian Xu wrote:
Hi All,
We are redesigning a system (previously was written in C) using D.
We use Boundary-Controll-Entity-Pattern.
To wrap db table to entities is a very time consuming work.
Is there any framework or tips for multi-tier applications in D?
--Qian
At times like this, I think of this blog post:
http://ayende.com/Blog/archive/2008/03/11/Field-Expedients-or-why-I-dont-have-the-tools-is.aspx
You can likely write some mixins to ease the use of Active Record. That
would be the first thing I'd try. The simplest version I can imagine
would either not work for relations:
template Member(T, char[] name)
{
enum Member = T.stringof ~ ` ` ~ name ~ `() { return row.get!(` ~
T.stringof ~ `)(` ~ name ~ `); }`;
}
/*
table Foo
a INT,
b BIT,
c TEXT
*/
class Foo
{
private Row row;
this (Row row) { this.row = row; }
mixin (Member!(int, "a"));
mixin (Member!(bool, "b"));
mixin (Member!(char[], "c"));
}
