Create entities in job?

I am attempting to create some entities within a job, long story, just go with me on this:

So I have a native array filled with some entities that I create in a mono behavior (a small collection of Autos)

Within the job I have:

Code (CSharp):

1.  
2. var entityManager = World.DefaultGameObjectInjectionWorld.EntityManager;
3. Entity prefab = autoPrototypes[randomValue];
4. var autoEntity = entityManager.Instantiate(prefab);
5.  

But on the third line an exception is thrown:
The native container may not be deallocated on a job.
Use [DeallocateOnJobCompletionAttribute] to deallocate a native container safely on job completion.

So... what dumbass thing am I doing?

 

Well first of all you cant use EntityManager inside of a job, you need to use EntityCommandBuffers(detailed here https://docs.unity3d.com/Packages/com.unity.entities@0.6/manual/entity_command_buffer.html )

For the error, just add that attribute next to the nativearray inside your job code

Code (CSharp):

1. struct MyJob : IJob{
2. [DeallocateOnJobCompletion] public NativeArray<Translations> TranslationsArray;
3. public void Execute()
4.     {
5. //stuff
6.     }
7. }

 

Thank you, I will look to Command Buffer.

Have a great weekend

 

Personally I struggle with the job syntax and like the Entities.ForEach() way a lot more. In a SystemBase.