/// <summary>
/// Ensures the provided <see cref="IGraphType" /> exists in this collection (adding it if it is missing)
/// and that the given type reference is assigned to it. An exception will be thrown if the type reference is already assigned
/// to a different <see cref="IGraphType" />. No dependents or additional types will be added.
/// </summary>
/// <param name="graphType">Type of the graph.</param>
/// <param name="associatedType">The concrete type to associate to the graph type.</param>
/// <returns><c>true</c> if type had to be added, <c>false</c> if it already existed in the collection.</returns>
public bool EnsureGraphType(IGraphType graphType, Type associatedType = null)
{
Validation.ThrowIfNull(graphType, nameof(graphType));
associatedType = GraphValidation.EliminateWrappersFromCoreType(associatedType);
GraphValidation.EnsureValidGraphTypeOrThrow(associatedType);
// attempt to create a relationship between the graph type and the associated type
// the concrete type collection will throw an exception if that relationship fails or isnt
// updated to the new data correctly.
var justAdded = _graphTypesByName.TryAdd(graphType.Name, graphType);
_concreteTypes.EnsureRelationship(graphType, associatedType);
_extendableGraphTypeTracker.MonitorGraphType(graphType);
// dequeue and add any extension fields if present
if (associatedType != null)
{
var unregisteredFields = _typeQueue.DequeueFields(associatedType);
if (graphType is IExtendableGraphType objType)
{
foreach (var field in unregisteredFields)
{
_extendableGraphTypeTracker.AddFieldExtension(objType, field);
}
}
}
return(justAdded);
}
