ResolutionContext passed into Condition always has a null SourceType

[danielp37]

This was something that worked in Automapper 2.0 that now appears to be broken in Automapper 2.1.

I have the following statement:

    public static IMappingExpression<TSource, TDestination> DontCopyNullValues<TSource, TDestination>(this IMappingExpression<TSource, TDestination> expression)
    {
      expression.ForAllMembers(opt => opt.Condition((ResolutionContext r) => r.SourceValue != null));
      return expression;
    }

I use it to not have null values copied from the source object to the destination object. In these cases the source object already exists and I am copying values over to the destination object. It looks like in changeset f5daca4 a change was made to call propertyMap.ShouldAssignValue sooner. Previously the call to ShouldAssignValue looked like this:

           var newContext = context.CreateMemberContext(typeMap, result.Value, destinationValue, targetSourceType,
                                  propertyMap);

           if (!propertyMap.ShouldAssignValue(newContext))
              return;

but now it looks like:

if (!propertyMap.ShouldAssignValue(context.CreateMemberContext(null, null, null, null, propertyMap)))
     return;

I can work around this by calling the following:

r.PropertyMap.ResolveValue(r.Parent).Value != null

but this seems to be working around something that should just work.

[lock]

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