private async Task InternalLoadDtoAsync <TTargetDto, TKeyProvider>(RelatedDtoProperty relatedProperty, RelatedValueType idType, IDtoLoadRule loaderRule, TTargetDto[] arrTargetDtos, TKeyProvider[] arrKeyProviders)
where TTargetDto : class
where TKeyProvider : class
{
var dtoType = relatedProperty.DtoType;
var keyProviderWithIds = arrKeyProviders.ToDictionary(x => x, keyProvider => idType.Property.GetValue(keyProvider));
var idsToLoad = keyProviderWithIds.Values.Where(x => x != null).ToArray();
Dictionary <object, object> dictLoadedDtos = null;
if (idsToLoad.Any())
{
object[] relatedDtos = (await loaderRule.LoadAsObjectAsync(_serviceProvider, idsToLoad)).ToArray();
dictLoadedDtos = relatedDtos.ToDictionary(x => loaderRule.GetKey(x), x => x);
}
for (var index = 0; index < arrTargetDtos.Length; index++)
{
var targetDto = arrTargetDtos[index];
var keyProvider = arrKeyProviders[index];
object propValue = null;
var desiredDtoKey = keyProviderWithIds[keyProvider];
if (desiredDtoKey != null && dictLoadedDtos.ContainsKey(desiredDtoKey))
{
propValue = dictLoadedDtos[desiredDtoKey];
}
dtoType.Property.SetValue(targetDto, propValue);
}
}
private async Task InternalLoadDtoArrayAsync <TTargetDto, TKeyProvider>(RelatedDtoProperty relatedProperty, RelatedValueType idType, IDtoLoadRule loaderRule, TTargetDto[] arrTargetDtos, TKeyProvider[] arrKeyProviders)
where TTargetDto : class
where TKeyProvider : class
{
var dtoType = relatedProperty.DtoType;
var keyProviderWithIds = arrKeyProviders.ToDictionary(x => x, keyProvider => ((IEnumerable)idType.Property.GetValue(keyProvider)).Cast <object>().ToArray());
var idsToLoad = keyProviderWithIds.Values.Where(x => x != null).SelectMany(x => x).Where(x => x != null).Distinct().ToArray();
Dictionary <object, object> dictLoadedDtos = null;
var dtoElementType = dtoType.ElementType;
if (idsToLoad.Any())
{
object[] relatedDtos = (await loaderRule.LoadAsObjectAsync(_serviceProvider, idsToLoad)).ToArray();
dictLoadedDtos = relatedDtos.ToDictionary(x => loaderRule.GetKey(x), x => x);
}
for (var index = 0; index < arrTargetDtos.Length; index++)
{
var targetDto = arrTargetDtos[index];
var keyProvider = arrKeyProviders[index];
object propValue = null;
var desiredDtoKeys = keyProviderWithIds[keyProvider];
if (desiredDtoKeys != null)
{
var dtoArray = Array.CreateInstance(dtoType.ElementType, desiredDtoKeys.Length);
for (int i = 0; i < desiredDtoKeys.Length; i++)
{
var desiredDtoKey = desiredDtoKeys[i];
object dto = null;
if (desiredDtoKey != null && dictLoadedDtos.ContainsKey(desiredDtoKey))
{
dto = dictLoadedDtos[desiredDtoKey];
}
dtoArray.SetValue(dto, i);
}
propValue = dtoArray;
}
dtoType.Property.SetValue(targetDto, propValue);
}
}
