protected ExtractInfo CreateExtractInfo(Type targetClassType, int schemeId, int extractLevel)
{
//Check cache
ExtractInfo result;
if (_ExtractInfoCache.TryGetExtractInfo(targetClassType, schemeId, out result))
{
return(result);
}
result = new ExtractInfo(targetClassType, schemeId);
_ExtractInfoCache.Add(targetClassType, schemeId, result);
_MappingProvider.GetExtractInfo(result);
//resolving nested types
foreach (var item in result.SubTypes)
{
if (item.RelatedExtractInfo.TargetType == null)
{
item.RelatedExtractInfo.TargetType = ReflectionHelper.GetReturnType(item.Member);
}
}
foreach (var item in result.ChildTypes)
{
if (item.RelatedExtractInfo.TargetType == null)
{
item.RelatedExtractInfo.TargetType = ReflectionHelper.GetListItemType(
ReflectionHelper.GetReturnType(item.Member));
if (item.KeyInfo != null)
{
item.KeyInfo.ChildType = item.RelatedExtractInfo.TargetType;
}
}
if (item.RelatedExtractInfo.TargetType == null)
{
throw new DataMapperException("Cannot resolve type of items in collection(" + item.Member.Name + "). " +
"Try to set it via ItemType property of DataRelationMapAttribute.");
}
}
//distinct same keys
foreach (var item1 in result.ChildTypes)
{
foreach (var item2 in result.ChildTypes)
{
var key1 = item1.KeyInfo;
if (key1 != null && key1.Equals(item2.KeyInfo))
{
item2.KeyInfo = key1;
}
}
}
DumpExtractInfo(result, extractLevel);
//fill child types (recursive)
foreach (var item in result.SubTypes)
{
item.RelatedExtractInfo = CreateExtractInfo(
item.RelatedExtractInfo.TargetType,
item.RelatedExtractInfo.SchemeId,
extractLevel + 1);
}
foreach (var item in result.ChildTypes)
{
item.RelatedExtractInfo = CreateExtractInfo(
item.RelatedExtractInfo.TargetType,
item.RelatedExtractInfo.SchemeId,
extractLevel + 1);
}
//fill foreign keys
if (extractLevel == 0)
{
result.ResolveForeign();
}
return(result);
}