Simplifying properties???Simplifying properties???
Old forum URL: forums.lhotka.net/forums/t/7088.aspx
boo posted on Thursday, June 11, 2009
[Serializable]
public class TestObj : BusinessBase<TestObj>
{
[CslaProperty(DefaultValue=-1)]
public int Id
{
get { return GetPropertyHelper<int>("Id"); }
set { SetPropertyHelper("Id", value); }
}
protected override void AddBusinessRules()
{
RegisterProperties();
// TODO: add validation rules
//ValidationRules.AddRule(RuleMethod, "");
ValidationRules.AddRule<TestObj>(IsIdValid, registeredProperties["Id"]);
}
private static bool IsIdValid<T>(T target, RuleArgs e)
where T : TestObj
{
e.Description = "Id is not valid";
return false;
}
private static Dictionary<string, PropertyInfo<object>> registeredProperties = new Dictionary<string,PropertyInfo<object>>();
private T GetPropertyHelper<T>(string name)
{
return (T)GetProperty(registeredProperties[name]);
}
private void SetPropertyHelper(string name, object value)
{
SetProperty(registeredProperties[name], value);
}
private TestObj()
{
/* Require use of factory methods */
RegisterProperties();
}
private static bool registered = false;
private void RegisterProperties()
{
if (!registered)
{
Type t = this.GetType();
var bindableProperties = from p in t.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)
where p.GetCustomAttributes(typeof(CslaPropertyAttribute), false).Length == 1
select p;
bindableProperties.ToList().ForEach(p =>
{
PropertyInfo<object> info;
if (((CslaPropertyAttribute)p.GetCustomAttributes(typeof(CslaPropertyAttribute), false)[0]).DefaultValue != null)
{
info = RegisterProperty(new PropertyInfo<object>(p.Name, p.Name,
((CslaPropertyAttribute)p.GetCustomAttributes(typeof(CslaPropertyAttribute), false)[0]).DefaultValue));
}
else
{
info = RegisterProperty(new PropertyInfo<object>(p.Name));
}
registeredProperties.Add(p.Name, info);
});
registered = true;
}
}
}
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