internal protected override object OnCreateInstance(SerializationContext serCtx, DataNode data)
{
DataItem item = data as DataItem;
if (item == null)
{
throw new InvalidOperationException("Invalid value found for type '" + Name + "'");
}
DataValue ctype = item ["ctype"] as DataValue;
if (ctype != null && ctype.Value != Name)
{
bool isFallbackType;
DataType stype = FindDerivedType(ctype.Value, null, out isFallbackType);
if (isFallbackType)
{
// Remove the ctype attribute, to make sure it is not checked again
// by the fallback type
item.ItemData.Remove(ctype);
}
if (stype != null)
{
object sobj = stype.CreateInstance(serCtx, data);
// Store the original data type, so it can be serialized back
if (isFallbackType && sobj is IExtendedDataItem)
{
((IExtendedDataItem)sobj).ExtendedProperties ["__raw_ctype"] = ctype;
}
return(sobj);
}
else
{
throw new InvalidOperationException("Type not found: " + ctype.Value);
}
}
ConstructorInfo ctor = ValueType.GetConstructor(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance, null, Type.EmptyTypes, null);
if (ctor == null)
{
throw new InvalidOperationException("Default constructor not found for type '" + ValueType + "'");
}
return(ctor.Invoke(null));
}
public object CreateConfigurationData(SerializationContext serCtx, Type type, DataNode data)
{
DataType dataType = GetConfigurationDataType(type);
return(dataType.CreateInstance(serCtx, data));
}
