DevForce Community Forum : Customer specific model changes (code first)

Customer specific model changes (code first) : Very cool, thanks for sharing ...

Sat, 19 May 2012 14:08:11 -700

Author: smi-mark
Subject: 3441
Posted: 19-May-2012 at 2:08pm

Very cool, thanks for sharing

Customer specific model changes (code first) : Just if anyone else is interessted....

Sat, 19 May 2012 04:31:55 -700

Author: Thomas
Subject: 3441
Posted: 19-May-2012 at 4:31am

Just if anyone else is interessted. In EF you can solve the problem by using the following in the DBContext (constructor):

(this as IObjectContextAdapter).ObjectContext.MetadataWorkspace.LoadFromAssembly(typeof().Assembly);

The only problem is that this is currently not supported by DevForce, but according to sbelini it is logged as a feature request.

Customer specific model changes (code first) : You could have a partial class...

Fri, 18 May 2012 10:49:31 -700

Author: smi-mark
Subject: 3441
Posted: 18-May-2012 at 10:49am

You could have a partial class for each customer that needs specific changes and then use conditional compilation symbols

Entity_Customer1.cs
#if CUSTOMER1
properties here
#endif

Entity_Customer2.cs
#if CUSTOMER2
properties here
#endif

Not the cleanest but I'm not sure how else you will achieve it

Customer specific model changes (code first) : This was also the only "solution"...

Thu, 17 May 2012 23:47:52 -700

Author: Thomas
Subject: 3441
Posted: 17-May-2012 at 11:47pm

This was also the only "solution" that I got to work. The problem is that by using this method I don't really know how to manage multiple customers properly.

Customer specific model changes (code first) : Hi Thomas,After doing some...

Thu, 17 May 2012 16:43:21 -700

Author: sbelini
Subject: 3441
Posted: 17-May-2012 at 4:43pm

Hi Thomas,

After doing some experimenting I found that unfortunately this is not possible.

The issue I came accross is that it can't find the BaseEntity type in the custom assembly.

A possible solution would be using partial classes. Howeve, in this case all code should be in the same assembly.

Regards,

Silvio.

Customer specific model changes (code first) : I am currently working on a...

Wed, 16 May 2012 03:47:49 -700

Author: Thomas
Subject: 3441
Posted: 16-May-2012 at 3:47am

I am currently working on a structure for a base project which I would like to extend from for the customers.

That means if there are no changes I would have something like a core model project and a customer model project which just has empty classes that extend the base model classes, but if there is a change that is only relevant for the customer I would just do a change for the customer model project.

Would this work with DevForce (EF) code first?

Edited by Thomas - 16-May-2012 at 3:48am