public void CreateAccessorChain_SingleElement()
{
var chain = MapperUtils.CreateAccessorChain(MemberExpressions.GetExpressionChain <ClassWithSeveralPropertiesDest>(c => c.Child));
Assert.IsNotNull(chain);
var destination = new ClassWithSeveralPropertiesDest();
var child = new ChildClass();
chain.Set(destination, child);
Assert.AreSame(child, destination.Child);
}
public override MapperAction <TContext> BuildAction <TFrom, TTo>(IMappingCollection <TFrom, TTo, TContext> map)
{
ExportMapInformation(map);
MemberSetterAction <TContext> action = null;
foreach (var iteratingSetter in map.Setters.Where(s => !s.IsIgnored))
{
var setter = iteratingSetter;
if (setter.Remap)
{
_mapper.RequireOneWayMap(setter.SourceType, setter.DestinationType, typeof(TFrom), typeof(TTo));
}
var toSetter = setter.DestinationMember.CreateConstructingAccessorChain <TContext>(_mapper);
var toAccessor = MapperUtils.CreateAccessorChain(setter.DestinationMember);
switch (setter.SourceObjectType)
{
case MemberEntryType.Function:
var sourceFunc = (MapperAction <TContext>)setter.SourceFunc;
if (setter.Remap)
{
var remapper = _mapper.GetMapper(setter.SourceType, setter.DestinationType);
action += (from, to, context) => {
var dest = toAccessor.Get(to);
toSetter(to, remapper.MapObject(sourceFunc(from, to, context), dest, context), context);
};
}
else
{
action += (from, to, context) => toSetter(to, sourceFunc(from, to, context), context);
}
break;
case MemberEntryType.Member:
var fromAccessor = MapperUtils.CreateAccessorChain(setter.SourceRoot.Union(setter.SourceMember));
if (setter.Remap)
{
var remapper = _mapper.GetMapper(setter.SourceType, setter.DestinationType);
action += (from, to, context) => toSetter(to, remapper.MapObject(fromAccessor.Get(from), toAccessor.Get(to), context), context);
}
else
{
action += (from, to, context) => toSetter(to, fromAccessor.Get(from), context);
}
break;
default:
throw new ArgumentOutOfRangeException("MemberEntryType not supported");
}
}
if (action == null)
{
return((from, to, context) => to);
}
else if (map.UpdatesContext)
{
return((from, to, context) =>
{
if (to == null)
{
to = _mapper.ConstructOrThrow(typeof(TTo));
}
action(from, to, map.ContextUpdater(from, to, context));
return to;
});
}
else
{
return((from, to, context) =>
{
if (to == null)
{
to = _mapper.ConstructOrThrow(typeof(TTo));
}
action(from, to, context);
return to;
});
}
}
public void CreateAccessorChain_NoElements_ThrowsException()
{
Assert.Throws <ArgumentException>(() => MapperUtils.CreateAccessorChain(new MemberInfo[0]));
}
public void CreateAccessorChain_Expression()
{
Assert.IsNotNull(MapperUtils.CreateAccessorChain <ClassWithSeveralPropertiesDest, ChildClass>(c => c.Child));
}
