/// <summary>
/// Adds a new object to the DataObjects dictionary using the Namespace property as the key.
/// It also reassigns the parent data object if it has not been assigned.
/// </summary>
/// <param name="childDataObject">The child data object to add.</param>
public void Add(TC childDataObject)
{
if (childDataObject == null)
{
throw new Exception("The child data object should never be null.");
}
if (!childDataObject.CanBeAssignedParentMetaObject(ParentDataObject))
{
throw new Exception(string.Format(InvalidParentTypeErrorMessage,
childDataObject.Description, childDataObject.Namespace, ParentDataObject.Description, ParentDataObject.Namespace));
}
var tempParentDataObject = childDataObject.ParentMetaObject;
childDataObject.ParentMetaObject = ParentDataObject;
if (ChildDataObjects.ContainsKey(childDataObject.Namespace))
{
var errorMessage = string.Format(ObjectAlreadyExistsErrorMessage,
ParentDataObject.Description, ParentDataObject.Namespace, childDataObject.Description, childDataObject.Namespace);
childDataObject.ParentMetaObject = tempParentDataObject;
throw new Exception(errorMessage);
}
if (!ChildDataObjects.TryAdd(childDataObject.Namespace, childDataObject))
{
throw new Exception(string.Format(ObjectAlreadyExistsErrorMessage,
ParentDataObject.Description, ParentDataObject.Namespace, childDataObject.Description, childDataObject.Namespace));
}
}
/// <summary>
/// Specific constructor to initialize with a data object lookup or any IEnumerable collection of type T.
/// </summary>
/// <param name="parentDataObject">The parent data objects to initalize with.</param>
/// <param name="childDataObjects">The chidl data objects dictionary to initalize with.</param>
public DataObjectLookup(TP parentDataObject, IEnumerable <TC> childDataObjects)
{
Init(parentDataObject, null);
foreach (var childDataObject in childDataObjects)
{
if (!ChildDataObjects.TryAdd(childDataObject.Namespace, childDataObject))
{
throw new Exception(string.Format(ObjectAlreadyExistsErrorMessage,
ParentDataObject.Description, ParentDataObject.Namespace, childDataObject.Description, childDataObject.Namespace));
}
}
_lastUsedDataObject = _childDataObjects.Count > 0
? _childDataObjects.First().Value
: null;
}
