public IFieldReader <TItem> Get(Stem <TItem> stem)
{
var substemCreator = new SubstemEngineSubContextCreator <TItem, TNav, TSubstem>(stem);
StemsEngineSubContext <TNav> subContext = substemCreator.GetEngineContext();
return(new SubCollectionFieldReader <TItem, TCollection, TNav>(_navigationExpression, subContext));
}
public IFieldWriter <TItem> Get(Stem <TItem> stem)
{
var substemCreator = new SubstemEngineSubContextCreator <TItem, TNav, TSubstem>(stem);
StemDataChangeEvents <TNav> stemEvents = substemCreator.GetDataChangeEvents();
StemsEngineSubContext <TNav> subContext = substemCreator.GetEngineContext();
MethodSetter <TItem, TNav> setter = MethodSetter <TItem, TNav> .FromDefinition(_definition, stem);
var tools = new SubWriterTools <TItem, TNav, TNav>(_navigationExpression, stemEvents, setter);
return(new SubItemFieldWriter <TItem, TNav>(tools, subContext));
}