EF6 - Mantaining base class record on delete

Question

In my context I have two entities and the entity A inherits from B, they're mapped with the fluent API and works for some time.

But now I need to change it and when the base entity is deleted I need to maintain the entity in the database.

Is it possible on EF6? The default behavior is to delete the records from both tables.

I thought of changing it from inheritance to composition but would prefer to just change the delete behavior.

Thanks in advance.

Answer 1

It could work as long as A is not Abstract. If you delete a TPT mapped objects EF sends two delete Statements one for the base and one for the inherited table.

You could use a command interceptor to prevent the base delete from being executed or you could use stored procedure Mappings for deletion.

If A is abstract you could inherit a DeletedA class and create a corresponding entiry in the DeleteA Stored Procedure.