omu.valueinjecter deep clone unlike types

Question

I think I\'m missing a simple concept with valueinjecter and/or AutoMapper, but how do you deep clone a parent dto.Entity to biz.Entity and include all children?

For

Answer 1

I was having the same issue when the arrays/lists in the objects have the same names but different types (ie a property named Animals of type ORMAnimals[] mapping to a property named Animals of type Animals[]).

With some minor tweaks to the sample code Chuck Norris has on the Deep Cloning page I got it working in my test code:

public class CloneInjection : ConventionInjection
{
    protected override bool Match(ConventionInfo c)
    {
        return c.SourceProp.Name == c.TargetProp.Name && c.SourceProp.Value != null;
    }

    protected override object SetValue(ConventionInfo c)
    {
        //for value types and string just return the value as is
        if (c.SourceProp.Type.IsValueType || c.SourceProp.Type == typeof(string)
            || c.TargetProp.Type.IsValueType || c.TargetProp.Type == typeof(string))
            return c.SourceProp.Value;

        //handle arrays
        if (c.SourceProp.Type.IsArray)
        {
            var arr = c.SourceProp.Value as Array;
            var clone = Activator.CreateInstance(c.TargetProp.Type, arr.Length) as Array;

            for (int index = 0; index < arr.Length; index++)
            {
                var a = arr.GetValue(index);
                if (a.GetType().IsValueType || a.GetType() == typeof(string)) continue;
                clone.SetValue(Activator.CreateInstance(c.TargetProp.Type.GetElementType()).InjectFrom(a), index);
            }
            return clone;
        }


        if (c.SourceProp.Type.IsGenericType)
        {
            //handle IEnumerable<> also ICollection<> IList<> List<>
            if (c.SourceProp.Type.GetGenericTypeDefinition().GetInterfaces().Contains(typeof(IEnumerable)))
            {
                var t = c.TargetProp.Type.GetGenericArguments()[0];
                if (t.IsValueType || t == typeof(string)) return c.SourceProp.Value;

                var tlist = typeof(List<>).MakeGenericType(t);
                var list = Activator.CreateInstance(tlist);

                var addMethod = tlist.GetMethod("Add");
                foreach (var o in c.SourceProp.Value as IEnumerable)
                {
                    var e = Activator.CreateInstance(t).InjectFrom(o);
                    addMethod.Invoke(list, new[] { e }); // in 4.0 you can use dynamic and just do list.Add(e);
                }
                return list;
            }

            //unhandled generic type, you could also return null or throw
            return c.SourceProp.Value;
        }

        //for simple object types create a new instace and apply the clone injection on it
        return Activator.CreateInstance(c.TargetProp.Type)
            .InjectFrom(c.SourceProp.Value);
    }
}