/// <summary>
/// Creates subscription to object changes for specific property
/// </summary>
/// <param name="workspaceId">Workspace identifier which is making a subscription</param>
/// <param name="instanceId">Instance Id which changes are going to be notified</param>
/// <param name="propertyName">Property name which changes are going to be notified</param>
/// <param name="notifyChangesFromSameWorkspace">Defines if changes from same workspace should be notified</param>
/// <param name="del">Delegate to be called</param>
/// <returns>Subscription object</returns>
public Subscription Create(Guid workspaceId, Guid instanceId, string propertyName, bool notifyChangesFromSameWorkspace, EventHandler <ObjectChangedEventArgs> del)
{
lock (subscriptions)
{
var id = Guid.NewGuid();
var typeId = typesService.GetInstanceTypeId(instanceId);
var memberId = typesService.GetTypeMemberId(typeId, propertyName);
if (memberId.Equals(Guid.Empty))
{
throw new ArgumentException("Property " + propertyName + " not found in type " + typesService.GetTypeFromId(typeId));
}
var res = new SubscriptionElement(id, workspaceId, instanceId, memberId, notifyChangesFromSameWorkspace, del);
subscriptions.Add(id, res);
return(new Subscription(id, workspaceId));
}
}
/// <summary>
/// Returns member identifier for a given type and member name
/// </summary>
/// <param name="typeId">Type to search in</param>
/// <param name="propertyName">Name of member</param>
/// <returns>Member ID, or empty Guid if not found</returns>
public Guid GetTypeMemberId(Guid typeId, string propertyName)
{
return(typesService.GetTypeMemberId(typeId, propertyName));
}
/// <summary>
/// Sets reference of object as immutable
/// </summary>
/// <param name="instance">Object which holds the reference</param>
/// <param name="propertyName">Property name of the reference</param>
public void SetImmutable(object instance, string propertyName)
{
var instanceId = Utils.GetItemId(instance);
objectInstancesService.SetImmutable(instanceId, typesService.GetTypeMemberId(typesService.GetInstanceTypeId(instanceId), propertyName));
}