public void AssignColumn(DataColumn dataColumn, Array classInstances)
{
var key = new TypeCachingKey(_classType, dataColumn.Field);
MSILGenerator.AssignArrayDelegate assignColumn = _assignerKeyToTag.GetOrAdd(key, (_) => new MSILGenerator().GenerateAssigner(dataColumn, _classType));
assignColumn(dataColumn, classInstances);
}
public void AssignColumn(DataColumn dataColumn, Array classInstances)
{
var key = new TypeCachingKey(_classType, dataColumn.Field);
if (!_assignerKeyToTag.TryGetValue(key, out MSILGenerator.AssignArrayDelegate assignColumn))
{
_assignerKeyToTag[key] = assignColumn = new MSILGenerator().GenerateAssigner(dataColumn, _classType);
}
assignColumn(dataColumn, classInstances);
}
private AssignerTag GetAssignerTag(TypeCachingKey key)
{
if (!_assignerKeyToTag.TryGetValue(key, out AssignerTag value))
{
value = new AssignerTag
{
Assign = CreateAssignerDelegate(key.ClassType, key.Field)
};
_assignerKeyToTag[key] = value;
}
return(value);
}
private CollectorTag GetCollectorTag(TypeCachingKey key)
{
if (!_collectorKeyToTag.TryGetValue(key, out CollectorTag value))
{
value = new CollectorTag
{
Collect = CreateCollectorDelegate(key.ClassType, key.Field)
};
_collectorKeyToTag[key] = value;
}
return(value);
}
public DataColumn BuildColumn(DataField field, Array classInstances, int classInstancesCount)
{
var key = new TypeCachingKey(_classType, field);
MSILGenerator.PopulateListDelegate populateList = _collectorKeyToTag.GetOrAdd(key, (_) => new MSILGenerator().GenerateCollector(_classType, field));
IList resultList = field.ClrNullableIfHasNullsType.CreateGenericList();
List <int> repLevelsList = field.IsArray ? new List <int>() : null;
object result = populateList(classInstances, resultList, repLevelsList, field.MaxRepetitionLevel);
MethodInfo toArrayMethod = typeof(List <>).MakeGenericType(field.ClrNullableIfHasNullsType).GetTypeInfo().GetDeclaredMethod("ToArray");
object array = toArrayMethod.Invoke(resultList, null);
return(new DataColumn(field, (Array)array, repLevelsList?.ToArray()));
}
