0
soonjoo created
Hello team,
How do I use EventBus Domains Events and to update the entity itself? For example, I have Task Entity, and whenever Task is updated/created/delete, besides adding a record to another table, I also need to update a column on the Task entity itself. However, when I do it, it goes into an infinite loop because the update on the Task Entity will trigger another Update Event.
I am building a revision tracker so I'm using Domain Events to keep revisions of any change to the Task Entity, and I need to update the main Task Entity with the latest revision Id.
Thanks.
2 Answer(s)
-
0
There are a few ways:
- Check if the CreationTime, LastModificationTime or DeletionTime is not within X period of time.
- Maintain a boolean dictionary somewhere.
- Maintain a boolean property on the Task entity itself. [list:9u85y1vp] [*:9u85y1vp] Add a [NotMapped] property to Task entity:
public class Task : Entity<long> { [NotMapped] public bool IsRevisionHandled { get; set; } }- Check and set that property when handled:
[UnitOfWork] public virtual void HandleEvent(EntityUpdatedEventData<Task> eventData) { var task = eventData.Entity; if (task.IsRevisionHandled) { return; } task.IsRevisionHandled = true; // ... } ```[/*:m:9u85y1vp][/list:o:9u85y1vp] -
0
Thank you for the help, I will try to maintain a boolean dictionary on another table
